Refimprove date September 2011 Infobox Windows component name DiskDefragmenter logo Defrag icon.png screenshot DiskDefragmenter Vista SP1.png caption DiskDefragmenter in Windows 7 type Defragmentation software included with Windows NT 4 and onwards br Windows 95 and onwards replaces replaced by related components DiskDefragmenter is a utility software utility in Microsoft Windows designed to increase access speed by rearranging Computer file files stored on a Hard diskdisk to occupy contiguous ... . Introduction DiskDefragmenter also shipped as part of Windows 95 , Windows 98 and Windows Me ... of the DiskDefragmenter Tool in Windows 98 Me ref The DiskDefragmenter in Windows 2000 was a stripped ... XP and Windows Server 2003 WindowsDiskDefragmenter was updated to alleviate some restrictions. ref ... . Windows Vista and Windows Server 2008 In Windows Vista , DiskDefragmenter includes an option ... is cool.aspx DiskDefragmenter in Windows Vista and Windows Server 2008 ref Notably, the Windows ... Drives . Limitations In Windows 2000 and later operating systems, DiskDefragmenter has the following ... kb 227463 DiskDefragmenter Limitations in Windows 2000, Windows XP, and Windows Server 2003 ref ... Troubleshooting DiskDefragmenterWindows Components Category Windows components Category ... XP , DiskDefragmenter also reduces system startup times. Citation needed date September 2011 ... on the Windows NT Cache Manager, which prevented the defragmenter from moving pieces of a file that cross ... them. ref http blogs.technet.com filecab articles 440717.aspx DiskDefragmenter FAQs ref The result, however, is that DiskDefragmenter does not require a certain amount of free space in order to successfully ... Defragmenter work User Guide publisher Windows Vista User Guide date 27 January 2007 accessdate 2007 ..., the defrag engine can combine the MFT fragments during defragmentation. DiskDefragmenter is maintained ... version in Windows Vista does not display a map of disk fragmentation, nor does it display progress ... more details
Infobox software name Image for Windows developer TeraByte Unlimited latest release version 2.13 latest release date June 29, 2008 operating system Microsoft WindowsWindows 98 ME NT 2000 XP 2003 Vista 2008 genre Backup software license Shareware website http www.terabyteunlimited.com www.terabyteunlimited.com Image for Windows is a disk imaging backup software program for Microsoft Windows developed by TeraByte Unlimited , and when first released in 2002, was one of two disk imaging software products that could create a consistent point in time backup of Windows while Windows was running. Citation needed date February 2010 The point in time technology used by Image for Windows consists of using a special Device driver driver , named PHYLock, that effectively redirects data being overwritten by Windows to a holding cache computing cache . Since Microsoft s introduction of the Volume Shadow Copy Service , this technology concept is now generally available to any Windows based backup software. Image for Windows, also known as, IFW, supports Windows NT 4.0 through Windows Server 2008 and supports both x32 and x64 versions of Windows. References Jon L. Jacobi, Aug 11, 2008 http www.pcworld.com downloads file fid,30755 order,4 description.html Editorial Review of Image for Windows , PC World magazine PC World Downloads Frank Ohlhorst November 24, 2009 http www.infoworld.com t storage ghost in machine 3 disk imaging apps 966?page 0,3 The ghost in the machine 3 disk imaging apps , Computerworld See also List of backup software Category Windows only shareware Windows stub ... more details
Notability Products date October 2009 Refimprove date November 2009 The term disk to disk , or D2D , generally refers to disk to disk backup. With D2D, a computer hard disk is backed up to another hard disk rather than to a tape or floppy. D2D is often confused with virtual tape , but differs in that it enables multiple backup and recovery operations to simultaneously access the disk directly by using a true file system. ref citebook title Backup and recovery first W. Curtis last Preston edition 2 publisher O Reilly Media year 2006 ISBN 0596102461 pages 219 ref Typical advantages of disk to disk Higher speed and higher capacity, relative to tape or floppy, resulting in shorter backup and recovery windows. Non linear recovery of data, enabling a specific file to be restored quicker and simpler than with tape. Lower total cost of ownership due to increased automation and lower hardware costs. Citation needed date August 2008 Remote backup services Remote backup service s are closely related to D2D backup as they are most often stored remotely on disk. The only major difference is that the data tends to be held at a remote location and these services are often provided by List of backup software Managed backup providers . References refs compu storage stub Category Computer backup Category Disk cloning ... more details
Unreferenced date October 2011 Infobox short story See Wikipedia WikiProject Novels or Wikipedia WikiProject Books name The Disk title orig El Disco translator author Jorge Luis Borges country Argentina language Spanish language Spanish series genre Fantasy , short story published in The Book of Sand book The Book of Sand publisher media type Print pub date 1975 english pub date 1977 The Disk is a 1975 in literature 1975 short story written by Argentina Argentinian writer Jorge Luis Borges . It appears in the collection The Book of Sand book The Book of Sand . Synopsis The story deals with a woodcutter who lives in the midst of a deep wood in old England and who has never seen the sea. He tells the reader that at one time a man, who asks lodging from him appears at his door. The woodcutter notes that the man was elderly, as he referred to England as Saxony , which, at the time, was a sign of age. The day after the man wishes to leave, but before he does, he says that he is a King and is descended from Odin . He tells the woodcutter that he is exiled, but that he shall always be a king, because he holds the Disk of Odin, the sole thing in the world that has but one side. He opens his hand and shows the disk the woodcutter sees only an empty palm, but thereafter touches it, feeling a chill in the fingers and seeing a flash. He makes a false claim that he has a full chest of gold and wants to trade it for the disk, because he knows the man will decline. And the man does, to which the woodcutter replies that the man may go. When he turns around, the woodcutter kills the man with an axe. He then drags the body and throws it into the river. He then comes back and searches for the disk, which he never finds. See also portal Novels Bibliography of Jorge Luis Borges Jorge Luis Borges DEFAULTSORT Disk, The Category 1975 short stories Category Short stories by Jorge Luis Borges story stub es El disco ... more details
About the Win16 subsystem in 32 bit Windows NT the 32 bit compatibility layer in 64 bit Windows WOW64 ... refers to components that may no longer be in current Windows products. date May 2011 In computing , Windows on Windows commonly referred to by its acronym WOW or WoW is a software component of 32 bit versions of the Microsoft Windows NT family of operating system s that provides limited support for running legacy Windows API Win16 applications applications written for Windows 3.x . Alternatively WOW may also refer to support for running 32 bit applications on 64 bit versions of Windows known as WOW64 . Background Many Win16 applications can run without changes on 32 bit editions of Windows ... space . 32 bit Windows shortens long filename s into 8.3 filename s to allow their use by legacy ... hardware directly cannot do so in Ring computer security user mode . The Windows 9x series of operating ... WoW component. 64 bit versions of Windows do not include the WoW Win16 support subsystem and therefore ... emulator. DOS applications therefore cannot run on a 64 bit edition of Windows unless a system administrator ... 32 bit virtual machine . The WIN.COM file in a Windows NT System32 folder facilitates Windows on Windows. In addition to Windows on Windows emulating the Windows 95 , Windows NT 4.0 , and Windows 98 kernels, the WIN.COM file emulates a Windows 3.x kernel for NTVDM , which runs the 16 bit DOS based Windows applications on Windows NT. In 64 bit Windows NT environments Microsoft has removed both NTVDM and the emulated Windows 3.x kernel thus 64 bit Windows on Windows only emulates the kernels of Windows 95 , Windows NT 4.0 , Windows 98 , and later where the emulated kernel of Windows Vista and later ... technet archive winntas training ntarchitectoview ntarc 5.mspx?mfr true Windows NT subsystems ... windows2000serv reskit prork preb mon ewvl.mspx?mfr true Monitoring 16 bit Windows applications Windows Components DEFAULTSORT Windows On Windows Category Windows components Windows stub de Windows ... more details
, to warn of a shutdown or to allow the user to cancel it. Replacement In Windows XP, the code schtasks ... en us library bb490866.aspx Microsoft TechNet At article Windows commands Category Windows administration ... more details
F6 disk is a colloquial name for a floppy disk containing a Microsoft Windows NT device driver for a SCSI or RAID system. F6 disks are used by all NT based versions of Windows, including Windows 2000 , Windows Server 2003 , and Windows XP . Starting with Windows Vista , floppy F6 disks are obsolete its setup process supports loading third party drivers from USB flash drive USB drives and CD ROM CD ROMs . Usage An F6 disk is named after the manner in which it is used. During the installation process for Windows, the Setup program must load device drivers for the disk system on which Windows will be installed. Unless the disk system has been established on the market before the finalization of the particular Windows release being installed, the drivers are not included on the Windows installation discs, and they must be loaded by means of an F6 disk. An F6 disk is loaded in Windows setup by pressing the Function key F6 key immediately when Windows Setup starts. The message Press F6 if you need to install a third party SCSI or RAID driver... is briefly flashed on the screen every time Windows Setup starts. An F6 disk contains device drivers in its root directory . Prior to Windows Vista, F6 disks were always floppy disks because, at the point the F6 prompt is shown, Windows Setup has not loaded the drivers for any media type other than floppy disks. Support for USB drives and CD ROMs was added in Windows Vista. Device drivers for RAID and other disk controllers are often provided on CD ROMs by the manufacturers, but they must be copied to an F6 disk if they are to be used during Windows Setup. An alternative approach is to slipstream computing slipstream the required SATA SCSI SAS RAID EIDE drivers into the Windows installation files directory e.g. i386 for the x86 variety by means of software like nLite and then create an ISO image that can be burned to CD or DVD media. References ... Device drivers Category Windows NT Category Patch utilities ... more details
Infobox Windows component name Disk Cleanup logo Cleanmgr.png logo size 64px screenshot Windows Vista Disk Cleanup.png caption Screenshot of Disk Cleanup in Windows Vista type Disk maintenance application included with Windows 98 , Windows 2000 2000 , Windows Me Me , Windows XP XP , Windows Server 2003 Server 2003 , Windows Vista Vista , Windows Server 2008 Server 2008 , Windows 7 7 , Windows Server 2008 R2 Server 2008 R2 replaces replaced by related components Desktop Cleanup Wizard Disk Cleanup cleanmgr.exe is a computer maintenance utility included in Microsoft Windows designed to free up disk space on a computer s hard drive. The utility first searches and analyzes the hard drive for files that are no longer of any use, and then removes the unnecessary files. There are a number of different file categories that Disk Cleanup targets when performing the initial disk analysis Compression of old files Temporary Internet files Temporary Windows file Downloaded program files Recycle Bin Removal of unused applications or optional Windows components Setup log files Off line files The above ... Microsoft Help and Support Description of the Disk Cleanup Tool in Windows XP accessed 7 June 2007 http www.theeldergeek.com disk cleanup utility.htm The Elder Geek on Windows XP Disk Cleanup Utility accessed 7 June 2007 http www.mindgems.com info Disk Cleanup.html Free Disk Cleanup Utility accessed 7 June 2007 Windows Components Category Windows components Category Windows only software Category ... Files may appear only under certain computer configurations, differences such as Windows Operating System ... accessed files are compressed to free up disk space while leaving the frequently used files uncompressed ... that appear on the Disk Cleanup tab, the More Options tab offers additional options for freeing up hard drive space through removal of optional Windows components, installed programs, and all but the most recent System Restore point or Shadow Copy data in some versions of Microsoft Windows ... more details
Disk Manager was a popular 1980s and 1990s software and documentation package for MS DOS and PC DOS computers, useful for self installing personal computer Hard disk drive hard disk s. It was written by Ontrack, a company later acquired by Kroll Inc. Installation covered different aspects explaining personal computer hardware concepts documenting switches of many of the existing disks putting into place custom device driver s which circumvented Enhanced BIOS BIOS limitations , notably those related to maximum disk or partition size and logical block addressing providing testing and informational utilities Drivers could be either DOS type, or replacement master boot record code. Diskettes with Disk Manager were provided by some disk manufacturers e.g. IBM , in custom OEM versions, supporting all of their models. In recent years Kroll switched to the business of providing computer disk data recovery services as Kroll Ontrack Data Recovery . External links http www.ontrackdatarecovery.com Kroll Ontrack Data Recovery Category Windows software Category Utility software Windows software stub ... more details
Orphan date April 2012 Infobox Software name Private Disk logo Image Private Disk logo.png screenshot Image Private disk main window.PNG 285px caption developer Dekart latest release version 2.12 If you update this, don t forget to update Comparison of disk encryption software latest release date November 10, 2010 latest preview version N A latest preview date N A operating system Windows 9x , Windows NT family , Windows 7 genre Disk encryption software language 17 languages license shareware price USD 65 website http www.dekart.com products encryption private disk www.dekart.com products encryption private disk Overview Private Disk is a disk encryption application for the Microsoft Windows ... them to an encrypted disk Compatibility with Windows 9x and Windows NT based operating systems including Windows Vista and Windows Seven Autorun and Autofinish automatically start a program or a script when a virtual disk is mounted or dismounted Encrypted backup of an encrypted image Password quality meter Automatic backup of a disk s encryption key Built in password recovery tool Compatibility ... software Category Windows software Category Disk encryption ... Disk s key selling points is in its ease of use, which is achieved by hiding complexity from ... the use of AES 256 encryption. Although Private Disk uses a NIST certified implementation of the AES ... of Private Disk the encryption hash library used ref http www.dekart.com fileadmin company ... Secure 20Hash 20Standart.pdf ref and not to Private Disk as a complete system. Feature highlights NIST certified implementation of Advanced Encryption Standard AES 256 bit, and SHA 2 . Private Disk ... FIPS 180 2 Disk Firewall , an application level filter, which allows only trusted programs to access ... Encrypted images can be accessed on Windows Mobile and Windows CE handhelds this is achieved by making the encrypted container format compatible with containers used by SecuBox disk encryption software ... more details
Image for Windows may refer to Scion Image for Windows , an image processing software TeraByte Unlimited s Image for Windowsdisk imaging , a disk imaging backup software dab ... more details
Infobox software name Disk Utility logo Image Diskutil.png 64px screenshot Image Disk Utility screenshot.png 220px Disk Utility screenshot caption author developer Apple Inc. released latest release version ... website Disk Utility is the name of a Utility software utility created by Apple Inc. Apple for performing Disk storage disk related tasks in Mac OS X . These tasks include ref http docs.info.apple.com article.html?path DiskUtility 10.5 en duh1008.html Disk Utility 10.5 Help Testing and repairing a disk or volume ref the creation, conversion, compression and encryption of disk image s from a wide range of formats read by Disk Utility to .dmg or for CD DVD images .cdr Mount computing mount ing, unmounting, and ejecting disks including both hard disk s, removable media and disk images enabling or disabling Journaling file system journaling verifying a disk s Data corruption integrity , and repairing it if the disk is damaged this will work for both Mac compatible format partitions, and FAT32 partitions with Microsoft Windows installed verifying and repair permissions repairing permissions ref http support.apple.com kb HT1452 About Disk Utility s Repair Disk Permissions feature ref disk erasing, disk formatting formatting , disk partitioning partitioning ref http support.apple.com kb HT2374 Mac OS X 10.5 About resizing disk partitions ref and disk cloning cloning secure deletion of free space or disk using a zero out data, a 7 pass NISPOM DOD 5220 22 M standard, or a 35 pass Gutmann ... Mac OS X How to combine RAID sets in Disk Utility ref , and repairing RAID sets restoring volumes from Apple Software Restore ASR images Optical disc authoring burning disk images to CD ROM CD or DVD in HFS Plus HFS format ref http support.apple.com kb HT2087 Burning a disk image file on a CD or DVD ... Technology S.M.A.R.T status of a hard disk. Disk Utility functions may also be accessed from ... commands. Disk Utility was updated with Mac OS X v10.3 . Prior to v10.3, the functionality of Disk Utility ... more details
orphan date November 2009 unreferenced date November 2009 Proposed deletion dated concern Advertising of a non notable product. timestamp 20120502165739 Disk Cataloger Disk Cataloging Tool is a software for cataloging removable media CD s, DVD s,.. to make it more organized & faster to reach. Disk cataloger index the contents of removable media allowing to search the contents at a later time. Basic Features Index the content of removable media CDs, DVDs, floppy disk,.. Ability Search to search for file folder within the catalog Multiple Catalogs Advanced Features Thumbnail s of Images & Video Monitor new media for auto cataloging save files metadata ID3 tag , video info, .. scan archive s content list of borrowers and a history of loans Examples CD Sync http www.ankitr.in browse.php?prog 0&file 0 freeware, windows 10 Strike SearchMyDiscs http www.10 strike.com searchmydiscs shareware, windows Cathy freeware, windows CD Catalog Expert http www.zero2000.com cd catalog expert index.html shareware, windows CDLib http www.itbsolutions.com cdlib.htm shareware, windows CD Storage Master http www.cdstorager.com shareware, windows Disclib http www.lyrasoftware.com index.php?option com content&view article&id 23 3Adisclib features&catid 6 3Afreeware&Itemid 9&lang en freeware, windows Data Crow http www.datacrow.net freeware, Windows Gnome Catalog http www.gnomecatalog.org freeware, linux Hyper s CdCatalog cdcat http cdcat.sourceforge.net freeware, Linux Windows MacOS MyLib Smart CD Catalog http www.smartcdcatalog.com index.html shareware, windows Visual CD http www.boozet.org visualcd.htm freeware, windows VVV Virtual Volumes View http vvvapp.sourceforge.net freeware, Windows Linux OSX Intel only Zzzbla s CD Catalog Category Computer storage media ... more details
Infobox Software name Jungle Disk logo screenshot caption author developer Jungle Disk, Inc. released 2007 operating system Microsoft WindowsWindows Mac OS X Linux language English language English license Proprietary website http jungledisk.com jungledisk.com Jungle Disk is an Remote backup service online backup tool that stores its data in Amazon S3 or Rackspace Rackspace Cloud Cloud Files Cloud Files . It was highlighted by Amazon as one of the earliest S3 clients ref name techcrunch s3 cite web url http www.techcrunch.com 2006 07 12 amazon releases early info on s3 storage use author Kirkpatrick, Marshall publisher TechCrunch title Amazon releases early info on S3 storage use ref The basic Jungle Disk software is sold as a monthly subscription model, and the customer is billed directly by Amazon for data storage and transfer. Jungle Disk can periodically back up selected files or folders. It provides a local webdav server and a local web interface that synchronize to the user s S3 Cloud Files account, optionally encrypting backed up data on the client side. For a monthly fee, the company ... cite web url http www.eweek.com c a Data Storage Jungle Disk Aids Amazon Storage author Jason Brooks work eWeek publisher Ziff Davis title Jungle Disk Aids Amazon Storage ref Jungle Disk supports Linux , Mac OS X and Microsoft WindowsWindows . On October 22, 2008, Jungle Disk entered into an agreement to be acquired by Rackspace Hosting, Inc. Rackspace purchased Jungle Disk in order to expand their cloud hosting services. Although owned by Rackspace, Jungle Disk continued to provide services with no changes ... Disk s security ref Cite web author Colin Percival title Insecurity in the Jungle disk url http www.daemonology.net ... of a file stored via Jungle Disk, they could transform it into anything they want planting ... attack on the Jungle Disk password. See also List of online backup services References reflist External ... storage de Jungle Disk ... more details
A disk editor is a computer program that allows its user to read, edit, and write raw data at ASCII character or hexadecimal , byte byte levels on disk drives e.g., hard disk s, USB flash disk s or removable media such as a floppy disk s as such, they are sometimes called sector editors, since the read write routines built into the electronics of most disk drives require to read write data in chunks of disk sector sector s usually 512 bytes . Many disk editors can also be used to edit the contents of a running computer s computer memory memory or a disk image . Unlike hex editors, which are used to edit Computer file files , a disk editor allows access to the underlying disk structures, such as the master ... directories . Programmers can use disk editors to understand these structures and test whether ... disk editors include special functions which enable more comfortable ways to edit and fix file systems or other disk specific data structures. Furthermore some include simple file browsers that can present the disk contents for partially corrupted file systems or file systems unknown to the operating system. These features can be used for example for file recovery. History Disk editors for home ... resets, instead of having to be re loaded on the same disk drive that later would hold the floppy to be edited the majority of home computer users possessed only one floppy disk drive at that time . Having the disk editor on cartridge also helped the user avoid editing damaging the disk editor application disk by mistake. All disk editors strive to be better than code debug command DEBUG ... from a Floppy disk floppy or Hard disk drive hard disk based on the BIOS . This permits simple disk ... changing the active boot partition in the MBR. In an Virtual DOS machine NTVDM under Windows NT code ... and is in essence useless as disk editor for the system drive. The Resource Kit and the support tools for some Windows NT versions contain code DSKPROBE code ref cite web url http technet.microsoft.com ... more details
Merge to Floppy disk variants discuss Talk Floppy disk Merge discussion Flippy disk date July 2011 unreferenced date October 2007 A flippy disk sometimes known as a flippy is a Double sided disk double sided 5 floppy disk , specially modified so that the two sides can be used independently but not simultaneously in single sided drives. Use of flippy disks was most common during the 8 bit home computer era of the early to mid 1980s. Generally, there were two levels of modifications For Disk Operating System s that did not use the Hard sectoring index hole in the disk to mark the beginnings of tracks, the flippy modification required only a new write enable notch to be cut. For this purpose, specially designed single square hole hole punchers, commonly known as disk doublers , were produced and sold by third party computer accessory manufacturers. Many users, however, made do with a standard round hole puncher and or an ordinary pair of scissors for this job. For disk operating systems that did use index sync, a second index hole window had to be punched in both sides of the jacket, and for hard sectored formats, an additional window must be punched for the sector holes. While cutting a second notch was relatively safe, cutting additional windows into the jacket was at great peril to the disk within. A number of floppy disk manufacturers produced ready made flippy media. As the cost ... sensors so that the disk could be flipped over without the necessary index hole punch. Data written .... Two versions on one disk During the time of single sided floppy disks some software manufacturers would use the two sides of one floppy disk to store two different copies of the same program. Each side ... II family Apple II or an Atari 8 bit family Atari 8 bit version on the other side of the disk. These releases ... placed on the flip side of the disk. If one put the disk into the drive upside down, the game played ... Category Floppy disk drives Category Legacy hardware ... more details
system. Many programs e.g. Acronis True Image can clone a disk, or make an image, from within Windows ... files without needing to restore the entire backup. Disk cloning programs either provide a Windows ...Multiple issues original research December 2011 refimprove December 2011 merge to disk image date December 2011 Disk cloning is the process of copying the contents of one computer hard disk to another disk or to an image file. This may be done straight from one disk to another, but more often, the contents of the first disk are written to an disk image image computer file file as an intermediate step, then the second disk is loaded with the contents of the image. Typically, this is done for archiving purposes, to restore lost or damaged data, or to move wanted data into a new disk, though other reasons also exist. Unlike standard copying functions, disk cloning involves copying hidden and in use ... to address these and other issues. Common Uses There are a number of notable uses for disk cloning software. These include Reboot and restore a technique in which the disk of a computer is automatically ... An individual user may use disk copying cloning to upgrade to a new, usually larger, hard disk ... or information. How it works This article is specific to disk cloning on the x86 platform specific details may not apply to other platforms. To provision the hard disk of a computer without using disk ... IBM PC partition s on the diskDisk formatting Format each partition to create a file system ... software With disk cloning, this is simplified to Install the first computer, as above. Create an image of the hard disk optional Clone the first disk, or its image, to the remaining computers. This can be referred to simply as a recovery disc. History Before Windows 95 , some computer manufacturers used hardware disk copying machines to copy software. This had the disadvantages of copying not just the used data on the disk, but also unused Disk sector sector s, as the hardware used was not aware ... more details
Disk cleaners are computer programs that find and delete potentially unnecessary or potentially unwanted files from a computer. The purpose of such deletion may be to free up disk space, to eliminate clutter or to protect privacy. Disk space consuming unnecessary files include temporary file s, trash computing trash , old backup s and web cache s made by web browsers. Privacy risks include HTTP cookie s, local shared object s, Computer data logging log files or any other trace that may tell which computer program opened which files. Disk cleaners must not be mistaken with antivirus software which delete malware , registry cleaner s which clean Windows Registry or data erasure software which securely delete files , although multifunction software such as those included below may fit into all these categories. Software Disk cleaning software with an article on Wikipedia CCleaner CleanGenius Disk Cleanup SlimWare Utilities Products SlimCleaner Temp File Cleaner Utility software with an article on Wikipedia that have disk cleaning functionality Acronis True Image Advanced SystemCare Advanced System Optimizer SlimWare Utilities Products FixCleaner Glary Utilities Jv16 powertools Norton Utilities Revo Uninstaller System Mechanic TuneUp Utilities Category Utility software type Software type stub ... more details
Refimprove date May 2009 distinguish page cache File Fujitsu MPG3307AH ms avrs 110909.jpg thumb The disk buffer sits on the controller board of the hard drive. In computer storage , disk buffer often ambiguously Fact date September 2007 called disk cache or cache buffer Fact date September 2007 is the embedded ... and the physical hard disk platter that is used for storage. Modern hard disks come with 8 ... from the disk platter. The disk buffer is physically distinct from and is used differently than the page cache typically kept by the operating system in the computer s main memory . The disk buffer is controlled by the microcontroller in the hard disk drive , and the page cache is controlled by the computer to which that disk is attached. The disk buffer is usually quite small, from 8 ... cache is reused multiple times, the data in the disk buffer is rarely reused. Fact date September 2007 In this sense, the terms disk cache and cache buffer are misnomers the embedded controller s memory is more appropriately called the disk buffer. Note that disk array controller s, as opposed to disk controller s, usually have normal cache memory of around 0.5&ndash 8 GiB. Uses Read ahead read behind When executing a read from the disk, the disk arm moves the Disk read and write head read ... system. The disk s embedded computer typically saves these unrequested sectors in the disk buffer, in case the operating system requests them later. Speed matching The speed of the disk s I O interface ... the hard disk platter . The disk buffer is used so that both the I O interface and the disk read write head can operate at full speed. Write acceleration The disk s embedded microcontroller may signal the main computer that a disk write is complete immediately after receiving the write data, before ... from the disk buffer, and the file system on the disk may be left in an inconsistent state. On some ... of data is deemed more important than write performance. Another option is to send data to disk in a carefully ... more details
image formats Disk Copy Disk Copy 4.2 DiskSet PC drive container raw disk image See also DiskImageMounter The Mac OS X 10.3 and later successor. Disk Utility Creates disk images in Mac OS X 10.3 and later. RaWrite and RaWrite2 for MS DOS and Microsoft Windows dd Unix Category Mac OS Category Disk ...Unreferenced stub auto yes date December 2009 Infobox Software name Disk Copy logo Deleted image removed Image Disk Copy.png Disk Copy icon screenshot caption developer Apple Computer latest release version 10.2 operating system System Software 6 , System 7 Macintosh System 7 , Mac OS 8 , Mac OS 9 , Mac OS X v10.0 , Mac OS X v10.1 , Mac OS X v10.2 genre disk image emulator license Disk Copy was the default utility for handling disk image s in System 7 Macintosh System 7 through Mac OS X 10.2 Usable in System Software 6 as well . In later versions of Mac OS X it has been replaced by DiskImageMounter for mounting the images and Disk Utility for creating them. Although the last official public release of Disk Copy for Mac OS 9 was version 6.3.3, there was to be a version 6.5 that supported the newer DMG image format introduced with Mac OS X. But because Apple had stopped support for OS 9 already, support for the old OS was eventually removed in favour of OS X. As such the OS 9 version of 6.5 only ever made it to beta 13 before development on it stopped. There was also a developer version 6.4 that 6.5 was based on and had most of the same functionality, but as a developer version it was never released. Although version 6.4 and 6.5 will read DMG images when the system is booted into OS 9, they can only do so if the image is not compressed. Disk Copy was also the name of an Apple utility distributed with some of the earliest version of the Mac OS. In order to copy 400K floppy disks using as few disk swaps as possible on a machine with only 128K of RAM, the original Disk Copy used the screen buffer to store binary data from the disk being copied as a result, the screen other than ... more details
Orphan date February 2009 Infinite Disk was a hierarchical storage management and backup utility backup utility for Microsoft Windows first published by Chili Pepper Software in 1992. ref http findarticles.com p articles mi m0SMG is n1 v14 ai 15027290 Infinite Disk 2.0 Product Announcement in Software Magazine ref The company and the software were acquired by Cheyenne Software in 1995, ref http findarticles.com p articles mi m0EIN is 1995 Sept 28 ai 17487149 pg 1 Business Wire, Sept 28, 1995 ref which was in turn purchased by Computer Associates in 1996. ref http findarticles.com p articles mi m0EIN is ai 18738324 Business Wire, Oct 7, 1996 ref Infinite Disk, operating in the background, automatically data compression compresses less active files and eventually data migration migrates them to removable media, but the files remain visible in Windows folders and, when accessed, are fetched from the backup storage. A variant of Infinite Disk, Personal Archiver, was bundled with Iomega removable drives starting in November 1994. ref http findarticles.com p articles mi m0EIN is ai 15890201 Business Wire, Nov 4, 1994 ref Notes references Category 1994 software Category Windows software Category Backup software storage software stub ... more details
on Windows 2000 Disk quotas are supported by most modern operating systems, including Unix like ... period of time. Windows 2000 and newer versions use the Quota tab of the disk properties dialog. Other systems provide their own quota management utilities. Common Unix Disk Quota Utilities quota display a user s file system disk quota and usage edquota Edit user quotas for file system repquota ...A disk quota is a limit set by a system administrator that restricts certain aspects of file system usage on modern operating system s. The function of using disk quotas is to allocate limited disk space in a reasonable way. Types of quotas There are two basic types of disk quotas. The first, known as a usage quota or block quota , limits the amount of disk space that can be used. The second, known as a file quota or inode quota , limits the number of files and directories that can be created. In addition, administrators usually define a warning level, or soft quota , at which users are informed they are nearing their limit, that is less than the effective limit, or hard quota . There may also be a small grace interval , which allows users to temporarily violate their quotas by certain amounts if necessary. Quotas Disk quotas are typically implemented on a per user or per group basis. That is, a system administrator defines a usage or file quota specific to a certain user or group. In doing ... taken. Some systems prevent disk write operations that would result in hard quota violations from ... using Unix File System UFS or ZFS , Microsoft Windows starting with Windows 2000 , Novell NetWare , OpenVMS VMS , and others. The method of administration for disk quotas varies between each of these operating ... disk quota.htm AIX disk quota system overview , IBM http www.cyberciti.biz faq solaris unix disk quota tutorial Solaris disk quota tutorial . http sourceforge.net projects linuxquota Linux DiskQuota ... de Disk Quota es Cuota de disco pl Limity dyskowe ... more details
A boot disk is a removable digital data storage medium from which a computer can load and run booting boot an operating system or utility program. The computer must have a built in program which will load and execute a program from a boot disk meeting certain standards. Boot disks are used for Operating ... of lost password is possible with an appropriate boot disk with some operating systems Games e.g. for Amiga ... program to use some system RAM as a RAM disk for temporary computer file file storage. As an example ... a virus written to their first sector which silently infect the host computer if switched on with the disk ... versions of Linux . The most commonly available floppy disk can hold only 1.4 Megabyte MB of data in its ... flash drives . Booting from a disk A modern PC is configured to attempt to boot from various devices ... be made. Modern Apple computers will boot from an appropriate disk if the user presses the C key while the machine is starting. Required files Different operating systems use different boot disk contents ... boot sector on the floppy disk, not in the format of a normal disk Computer file file . IO.SYS or IBMBIO.COM ... in one operation by an installed operating system details vary. Windows 8 File Windows To Go USB Drive.png thumb Windows To Go USB flash drive link Windows To Go Windows 8 has a feature called Windows To Go , that allows the system to run from a USB flash drive, requiring only the extraction of files into the USB drive and the installation of a bootloader. FreeDOS A valid boot sector on the disk COMMAND.COM KERNEL.SYS Linux A bootloader such as SYSLINUX or GRUB Linux kernel Initial ram disk ... Live CD Windows To Go External links http reboot.pro reboot.pro Community forum dedicated to Boot Disks http bootdisk.com Boot Disk information, sources, and tools HSW harvard extension schools computer science e 1 understand 2740 creating a boot disk video Creating a Boot Disk Category Booting ar da Bootdisk de Bootf higes Medium fr Disquette de d marrage ko id Boot disk it Disco ... more details
without drive emulation tmpfs refimprove date June 2009 A RAM disk or RAM drive is a block of Random ... as if the memory were a disk drive secondary storage . It is sometimes referred to as a virtual RAM ... containing RAM, which is a type of solid state drive . Performance The performance of a RAM disk is in general ... , hard disk drive hard drive , tape drive , or optical disk drive optical drive . ref cite web ... and type of file system , as well as others. File access time is greatly decreased since a RAM disk ..., alignment or positioning necessary. Second, the throughput maximum throughput of a RAM disk is limited ... disk can also improve the speed of loading pages . ref http www.macosxhints.com article.php?story 20040827132909881 Using a RAM disk for browsing the web on Macs http www.ghacks.net 2007 12 14 use a ramdisk to increase firefox security Using a RAM disk to improve security in firefox ref In many cases, the data stored on the RAM disk is created, for faster access, from data permanently stored elsewhere, and is re created on the RAM disk when the system reboots. Implementation Software RAM disks ... kernel , it is possible to also create and manage a RAM disk by way of a user space application ... due to the temporary nature of the information stored in the RAM disk, but an uninterruptible power ... RAM disk for microcomputers was invented and written by Jerry Karlin in the UK in 1979 80. The software, known as the Silicon Disk System was further developed into a commercial product and marketed ... the CPU could directly address. Making bank switched RAM behave like a disk drive was much faster than the disk drives especially in those days before hard drives were readily available on such machines. The Silicon Disk was launched in 1980, initially for the CP M operating system and later for MS ... Commodore computers, a RAM disk was also a popular application on Commodore 64 and Commodore 128 systems ... would automatically allocate a RAM drive named tt RAM tt . Microsoft added a RAM disk to MS DOS version ... more details
unbootable due to virus or single disk error in a critical windows file can be rescued without loosing ... of FAT and NTFS partitions. The Windows 7 Vista Disk Manager is Logical Disk Manager Compatibility ... of beginning sectors of a partition they delete. For example, if WindowsDisk Management Windows ...Image GParted.png thumb 300px GParted is a popular utility used for disk partitioning Disk partitioning is the act of dividing a hard disk drive into multiple logical storage units referred to as partitions , to treat one physical disk drive as if it were multiple disks. Partitions are also termed slice disk slices for operating systems based on BSD , Solaris operating system Solaris or GNU Hurd . A partition ... on the hard disk. Benefits of multiple partitions Creating more than one partition has the following ... disk image image backup s or disk cloning clones to be made of only the operating system and installed .... For example, one could install Linux , BSD , Mac OS X , Microsoft Windows or other operating systems on different partitions of the same hard disk and have a choice of booting into any compatible ... on different disk locations, which practically can t get all corrupted at the same time. Also, the chance ... just creating a partition lesser size than available on the disk. For example a 1 TB disk might ... the following disadvantages, as compared to having a single partition spanning the same disk area Reduces the total space available for user storage on the disk, as it forces the operating system to duplicate certain file system administration areas on the disk for each partition. Reduces overall disk ... it forces the disk s read write head to move back and forth on the disk to access data on each ... on each partition. It also prevents disk optimizers from moving all frequently accessed files closer to each other on the disk, which could reduce the number and distance of required head movements. Files ... be far apart on the disk. See short stroking considerations above. This issue does not apply to Solid ... more details
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