Infobox Software name Saturn DiskImage logo screenshot caption developer latest release version 1.4 latest release date October 26, 2009 operating system Cross platform genre List of ISO image software ISO image software , Build automation license Zlib License zlib libpng website http saturndiskimage.sourceforge.net saturndiskimage.sourceforge.net Saturn DiskImage is a tool for creating and analyzing disk images .iso files . Saturn was originally constructed with build automation in mind and therefore features a NAnt task, but it also provides a normal GUI and a .NET Framework .NET API . Saturn DiskImage requires .NET framework 2.0 or 3.5 or possibly Mono software Mono not tested . See also NAnt External links http saturndiskimage.sourceforge.net Saturn diskimage project home page Category Optical disc authoring Category .NET programming tools Category Build automation ... more details
extended to Apple DiskImage is a proprietary diskimage format commonly used with the Mac OS X operating system. When opened, an Apple DiskImage is Mount computing mounted as a volume within the Macintosh ... over the Internet . Universal DiskImage UDIF is a flat file format , and is the Native and foreign format native image format for Mac OS X. Newly created Apple Disk Images typically have a .dmg extension, although legacy Apple DiskImage files intended for Mac OS 9 and earlier generally have ... title Software Downloads Formats and Common Error Messages accessdate 2009 05 06 ref Apple DiskImage ... and Disk Utility in Mac OS X v10.3 and later. These utilities can also use Apple DiskImage files as images for burning CDs and DVDs. DiskImage files may also be managed via the Command line interface .... 010 4 Flags 014 4 The number of 512 byte blocks in the diskimage. This value should be zero unless the image format is 1 ProDOS order . 018 4 Offset to the first byte of the first block of the disk in the image file, from the beginning of the file. The disk data must come before the comment and creator ... data 2 Flags The flags field contains bit flags that specify details about the diskimage. Bits not defined here must be zero. class wikitable Bit Description 31 If this bit is set, the diskimage is locked ... contains the DOS 3.3 volume number of the diskimage. This bit should only be set for DOS 3.3 disk images. If the disk is DOS 3.3 format the image format is 0 , and this bit is 0, volume number 254 ... mounting a diskimage. The image will not be mounted unless the user indicates agreement with the license ... Currently, the only way to open a .dmg DiskImage in Mac OS 9 is to use either the developer version ... There are few options available to extract files or mount the proprietary Apple DiskImage format. The supported ... excerpt osxph2 1004 ?page 2&x maxdepth 0 chap16 O Reilly Mac DevCenter Tip 16 5. Create a DiskImage ... file systems ar cs DMG de DiskImage Datei it Apple diskimage it Universal DiskImage ... more details
Multiple issues orphan February 2009 advert January 2011 cleanup January 2011 FDI is a file image of a disc created with the Disk2FDI IBM PC compatible PC software. It is often used to read Amiga or Commodore 64 C64 discs and other discs formatted in a way that normally can t be read with a PC. ref cite web title Disk2FDI Homepage url http www.oldskool.org disk2fdi 070728 oldskool.org ref The software uses two methods Connect two floppy disk drive s to a PC and fill drive 0 with an ordinary PC formatted floppy disc . Drive 1 receives a foreign format disc. Then the software reads as normal from drive 0, but then selects drive 1 instead. It thus bypasses obstacles that would make the floppy controller otherwise refuse the format of the foreign disk. In particular it gets the Phase locked loop PLL to sync. Connect one disc drive to the PC via a cable that lets the parallel port interrupt pin Acknowledge trigger on the read signal. The Index signal is also read on the Select line. Using both signals a map of the position of the data per revolution can be built. The PC only needs to make the drive spin and use correct track and head. The reading is done by software exploiting interrupt timings. References references Category Disk images Category Computer file formats Category Amiga Category Retrocomputing ... 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 Windows Windows 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
The Image may refer to In literature The Image novel The Image novel , originally in French L Image , by Catherine Robbe Grillet In social theory The Image A Guide to Pseudo events in America , a 1961 book by Daniel J. Boorstin In music The Image , an American music band in which Dave Edmunds played. It is related with two other bands that appeared later The Human Beans and Love Sculpture . L Image , a musical band that includes Tony Levin , Mike Mainieri , Steve Gadd , David Spinozza , and Warren Bernhardt In film The Image film , a 1974 French film directed by Radley Metzger based on the above novel by Catherine Robbe Grillet The Image short film , a 1967 short film directed by Michael Armstrong and starring David Bowie and Michael Byrne disambiguation ... more details
other uses Image disambiguation Infobox Space telescope name Imager for Magnetopause to Aurora Global Exploration IMAGEimage File Image spacecraft iso view.gif 250px Diagram of IMAGE spacecraft caption Diagram of IMAGE spacecraft organization major contractors alt names Explorer 78 br IMAGE br 26113 NORAD ID ref name nssdc master nssdc id 2000 017A location orbit type height period velocity accel gravity launch date March 25, 2000 ref name nssdc master launch location Vandenberg AFB , USA ref name nssdc master launch vehicle Delta II Delta II 7326 ref name nssdc master mission length deorbit date wavelength mass 536 Kilogram kg 1181.7 Pound mass lb ref name nssdc master style diameter area focal length coolant website http image.gsfc.jhu.edu as of stats ref ref name nssdc master ... Spacecraft work NASA.gov date 2007 05 18 accessdate 2007 09 07 ref IMAGE from Imager for Magnetopause ... 2005. The IMAGE craft was placed in a 1,000 46,000 km orbit around the Earth, with an inclination of 90 passing over the geographical pole pole s and a 14.2 hour period. IMAGE was the first ... Radio Plasma Imager RPI Central Instrument Data Processor CIDP Image Aurora as seen by IMAGE.PNG thumb ... on board IMAGE The CIDP as well as the Command & Data Handling Subsystem main on board computer of the craft ... physics articles External links http image.gsfc.nasa.gov IMAGE NASA page , with http pluto.space.swri.edu IMAGE spacecraft table.html tabular presentation of key spacecraft details http pluto.space.swri.edu IMAGE Southwest Research Institute http nssdc.gsfc.nasa.gov database MasterCatalog?sc 2000 017A NSSDC Master Catalog information on the IMAGE mission commons category IMAGE References reflist Explorer program Magnetosphere Orbital launches in 2000 DEFAULTSORT Image Category Artificial satellites ... by Delta II rockets cs IMAGE de Imager for Magnetopause to Aurora Global Exploration es Imager for Magnetopause ... ja IMAGE sk IMAGE sv IMAGE satellit ... more details
Infobox software name Disk Utility logo Image Diskutil.png 64px screenshot ImageDisk Utility screenshot.png 220px Disk Utility screenshot caption author developer Apple Inc. released latest release version ... 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 diskimage file on a CD or DVD ... and mounting diskimage files, and Disk Utility was used for formatting, partitioning, verifying and repairing ... ManPages man1 hdiutil.1.html Apple online man page for code hdiutil code Mac OS X Diskimage emulators ... 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 diskimage 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 ... 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 ... Technology S.M.A.R.T status of a hard disk. Disk Utility functions may also be accessed from ... more details
Orphan date December 2010 Unreferenced date December 2009 merge cartridge electronics date March 2012 Disk cartridge has several meanings related to computer storage . 1960s storage medium An early disk cartridge was a single hard disk platter encased in a protective plastic shell. When the removable cartridge was inserted into the cartridge drive peripheral device , the disk read and write head read write head s of the drive could access the magnetic data storage device data storage surface of the platter through holes in the shell. The disk cartridge was a direct evolution from the disk pack drive, or the early hard drive . As the computer storage density storage density improved, even a single platter would provide a useful amount of data storage space, with the benefit being easier to handle than a removable disk pack. An example of a cartridge drive is the IBM magnetic disk drives IBM 2310 IBM 2310 . Disk cartridges were made obsolete by floppy disk s. Expand section date June 2008 Modern storage medium Image Zip disc back.jpg thumb Zip disks are sometimes referred to as disk cartridges. Some more recent removable disk storage media are referred to as disk cartridges . This is most common with Zip drive Zip disk s. It is very rare, but not unheard of, to refer to the floppy disk 3 inch microfloppy as a disk cartridge. Protective casing Some types of optical disc s and magneto optical disc s were either permanently enclosed in a protective plastic sheath, or placed into a sheath before being inserted into the computer drive drive . This sheath was often called caddy , but sometimes also disk cartridge . See also Cartridge electronics Universal Media Disc DEFAULTSORT Disk Cartridge Category Rotating disc computer storage media ... more details
An occulting disk is a small disk used in a telescope to block the view of a bright object in order to allow observation of a fainter one. The coronagraph , at its simplest, is an occulting disk in the focal plane of a telescope , or in front of the entrance aperture , that blocks out the image of the solar disk, so that the corona can be seen. Notes, References and Sources http www.daviddarling.info encyclopedia The Encyclopedia of Astrobiology, Astronomy, and Spaceflight astronomy stub Category Telescopes Category Optical devices de Kegelblende ... more details
Image Nashua diskpack.jpg thumb Disk pack manufactured by Nashua, USA, without its protective cover. A 3.5 modern hard drive is shown for comparison. A Disk pack is a layered grouping of hard disk platter s circular, rigid discs coated with a magnetic data storage device data storage surface . A disk pack is the core component of a hard disk drive. In modern hard disks, the disk pack is permanently sealed inside the drive. In many early hard disks, the disk pack was a removable unit, and would be supplied ... and a separate bottom that completed the sealed package. To remove the disk pack, the drive would ... shell inserted and twisted to unlock the disk platter from the drive and secure it to the top shell. The assembly would then be lifted out and the bottom cover attached. A different disk pack could then be inserted by removing the bottom and placing the disk pack with its top shell into the drive. Turning the handle would lock the disk pack in place and free the top shell for removal. The first removable disk pack was invented in 1965 by two IBM engineers, Thomas G. Leary and R. E. Pattison. The 14 ... vendors producing IBM compatible drives and disk packs. Examples of a hard disks with removable disk packs are the IBM magnetic disk drives IBM 1311 IBM 1311 , and the Digital Equipment Corporation Digital RP04. gallery File Fotothek df n 10 0000117.jpg Operator selects a disk pack File Fotothek df n 10 0000118.jpg Bottom cover is removed File Fotothek df n 10 0000119.jpg Disk pack is ready for insertion File IBM2314DiskDrivesAndIBM2540CardReaderPunch.jpg IBM 2314 s with removable disk packs and empty covers on top File Disk Pack.jpg A removable pack in place gallery References http www 03.ibm.com ... for Drum and Disk Records, U.S. Patent 3,206,214, 1965 R.E. Pattison, Portable Memory for Data Processing Machine, U.S. Patent 3,176,281, 1965 See also commons category Removable disk packs disk cartridge , History of hard disk drives DEFAULTSORT Disk Pack Category Rotating disc computer storage ... more details
Notability date August 2009 Primary sources date August 2009 Infobox software name Disk Order logo Deleted image removed ImageDisk Order.png 48px screenshot Image Diskorder.png 250px caption Screenshot of Disk Order developer Like Mac Group latest release version 3.1 operating system Mac OS X genre File manager license Proprietary software Proprietary website http www.likemac.ru english www.likemac.ru english Disk Order is a shareware Norton Commander like file manager File Manager OFM for Mac OS X . See also Comparison of file managers Comparison of FTP client software External links http www.likemac.ru english The official site of Disk Order File managers Category Mac OS X software Category FTP clients mac software stub ru Disk Order ... more details
Unreferenced stub auto yes date December 2009 Infobox Software name Disk Copy logo Deleted image removed ImageDisk 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 diskimage emulator license Disk Copy was the default utility for handling diskimage 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 ... image formats Disk Copy Disk Copy 4.2 DiskSet PC drive container raw diskimage 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 Diskimage emulators Category Mac OS emulation software Category Mac OS only software made by Apple Inc ... 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
Multiple issues unreferenced December 2009 context October 2009 Image HP HASS NIKE.jpg thumb Hewlett Packard disk arrays HASS top and NIKE OEM d Data General SCSI Clariion Image EMC Clariion CX500.jpg thumb EMC Corporation EMC CLARiiON CX500 Cover removed on one Shelf Image EMC Symmetrix DMX1000 Front.jpg thumb EMC Corporation EMC Symmetrix DMX1000 A disk array is a disk storage system which contains multiple disk drive s. It is differentiated from a disk enclosure , in that an array has cache computing cache memory and advanced functionality, like redundant array of independent disks RAID and Storage virtualization virtualization . Components of a typical disk array include Disk array controller s Cache computing Cache memories Disk enclosure s Power supply Power supplies Typically a disk array provides increased availability, resiliency and maintainability by using additional, redundant components controllers, power supplies, fans, etc. , often up to the point when all single point of failure single points of failure SPOFs are eliminated from the design. Additionally those components are often hot swappable. Typically, disk arrays are divided into categories Network attached storage NAS arrays storage area network SAN arrays Modular SAN arrays Monolithic SAN arrays Utility Storage Arrays Storage virtualization DEFAULTSORT Disk Array Category Computer storage Category Fault tolerant computer systems Category RAID de Disk Array fr Baie de stockage ja pl Macierz dyskowa ru ... 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 ... 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 with 64 bit platforms Awards Existing versions There are multiple versions of Private Disk, which provide a different feature set http www.dekart.com products encryption private disk Private Disk hard ... 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 ... Disk s key selling points is in its ease of use, which is achieved by hiding complexity from ... Dekart title Our philosophy ref e.g. data wiping is applied transparently when an encrypted image ... 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 ... the encrypted container format compatible with containers used by SecuBox disk encryption software by Aiko Solutions Data remanence File wiping is applied when deleting an encrypted image PD File ... them to an encrypted disk Compatibility with Windows 9x and Windows NT based operating systems including ... more details
Otheruses2 Disc Image Unit disk open.svg thumb right An open Euclidean unit disk In mathematics , the open unit disk or disc around P where P is a given point in the plane mathematics plane , is the set ... disks with respect to other metrics Image Unit disc.svg thumb right From top to bottom open unit disk ... disk around P is the set of points whose distance from P is less than or equal to one math bar D 1 P Q P Q leq 1 . , math Unit disks are special cases of disk mathematics disks and unit ball s. Without further specifications, the term unit disk is used for the open unit disk about the origin mathematics ... plane C , the unit disk is often denoted math mathbb D math . The open unit disk, the plane, and the upper ... analytic and bijective function from the open unit disk to the plane its inverse function is also analytic. Considered as a real 2 dimensional analytic manifold , the open unit disk is therefore isomorphic to the whole plane. In particular, the open unit disk is homeomorphic to the whole plane. There is however no conformal map conformal bijective map between the open unit disk and the plane. Considered as a Riemann surface , the open unit disk is therefore different from the complex plane . There are conformal bijective maps between the open unit disk and the open upper half plane . So considered as a Riemann surface, the open unit disk is isomorphic biholomorphic , or conformally equivalent ... unit disk. One bijective conformal map from the open unit disk to the open upper half plane is the M bius ... so that the upper half plane becomes the disk s interior and the real axis forms the disk s circumference ... unit disk to the open upper half plane can also be constructed as the composition of two stereographic projection s first the unit disk is stereographically projected upward onto the unit upper half ... sphere opposite to the touching point as projection center. The unit disk and the upper half plane ... space The open unit disk is commonly used as a model for the Hyperbolic space hyperbolic plane ... more details
unreferenced date April 2012 Image DOM.JPG thumb right 250px Disk on module A disk on module DOM is a Solid state drive flash drive with either 40 44 pins Parallel ATA IDE Standard ATA Interface USB or SATA Interface to be used as a computer hard disk drive HDD . The flash to IDE converter simulates a harddisk, and therefore the modules can be used without additional software or drivers. They are used particularly within embedded computing systems where they can often be deployed in to very harsh environments where mechanical hard disk drives would simply fail , or in a thin client because of small size, low power consumption and silent operation. DOMs are highly reliable as they do not have any moving parts like regular hard disks and are small in size and light in weight. However, after a disk crash in traditional hard disk, some data may still be recoverable by scanning the physical media using specialized equipment, but there is no known method to recover lost data from a physically damaged DOM. Citation needed date July 2010 Currently storage capacities range from 32MB to 32GB with various form factor including vertical or horizontal orientation. The DOM works the same way as a solid state drive , but it is generally plugged directly to the motherboard. DEFAULTSORT Disk On Module Category Solid state computer storage media Compu hardware stub de Disk on Module fr Disk On Module it Disk on module nl Disk on module ru Disk on Module ... 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 diskimage . 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 ... and is in essence useless as disk editor for the system drive. The Resource Kit and the support ... Technet accessdate 2011 07 05 ref as a very simple disk editor supporting the use and modification ... of some disk editors or products containing them This is a list of utility software utilities for performing ... more details
One of the few advantages of using a Nipkow disk is that the image sensor that is, the device converting ...Refimprove date March 2010 Image Nipkow disk.svg thumb 300px Schematic showing the circular paths traced by the holes in a Nipkow disk A Nipkow disk sometimes Anglicized as Nipkov disk , also known as scanning disk , is a mechanical, geometrically operating image scanning device, invented by Paul Gottlieb Nipkow . This scanning disk was a fundamental component in mechanical television through the 1920s. Design The device itself is nothing more than a mechanically spinning disk of any suitable material ... of the disk and proceeding to the center of the disk, much like a gramophone record . The holes, when the disk rotates, trace circular ring surfaces, with inner and outer diameter depending on each hole s position on the disk and thickness equal to each hole s diameter. These surfaces may or may not partly overlap, depending on the exact construction of the disk. Process A lens projects an image of the scene in front of it directly onto the disk. ref cite web url http users.swing.be philippe.jadin nipkowdisk.htm title The Nipkow disk publisher Users.swing.be date accessdate 2010 03 02 ref Each hole in the spiral takes a slice through the image which is picked up as a pattern of light and dark by a sensor. If a light is controlled behind a second Nipkow disk rotating in synch at the same speed and direction, the image can be reproduced line by line, however it remains no larger than the one projected onto the original receiving disk. When spinning the disk while observing an object through the disk, preferably through a relatively small circular sector of the disk the viewport , for example, an angular quarter or eighth of the disk, the object seems scanned line by line, first by length ... the disk rapidly enough, the object seems complete, in a way similar to cinematography , and capturing ... of the disk but a small rectangular area with black cardboard which stays fixed , spinning the disk ... 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
About the perforated disk used to modulate air jets to produce sounds Siren disambiguation A siren disk is a disk with holes variously spaced, such that when spun in front of an air jet, the holes modulate the jet in a primarily binary on off fashion, to directly produce sound. Typical usages of siren disks Siren disks were once used as the active element of sirens, but the majority of siren disks currently manufactured are used as instructional aids in teaching the mechanics of sound and music. For example, the Ontario Science Centre has a metal siren disk set up as an interactive teaching exhibit for children. Siren disk hole spacing The harmonic portion of the siren disk Most siren disks include several concentric circles of spaced holes, so that an air jet can be directed at different radii to get different effects. For example, the outermost eight hole circles include uniformly spaced holes, in which the number of holes increases along a harmonic series, so that eight notes of a musical scale can be played by directing an air jet sequentially at each circle. The nonharmonic portion of the siren disk Typically there are further holes near the central part of the disk, with various ..., 40, 45, 48, which give the following musical notes Image Sirendisk notes.640.png 631px right The 12 notes of the most common kind of siren disk. The last eight circles of holes give the following ... 8 holes of the siren disk are br C, D, E, F, G, A, B, C br A similarly generated minor scale can be made by making a siren disk having the following ratios of hole numbers br 1, 9 8, 6 5, 4 3, 3 2, 8 ... the number of holes to make a minor scale siren disk br 1, 9 8, 6 5, 4 3, 3 2, 8 5, 9 5, 2 8 5 3 br br 120 135 144 160 180 192 216 240 br Typical siren disk setup The typical siren disk setup consists ... organ style keys so that children can play music on the siren disk by pressing the keys to open ... spaced holes of the siren disk. See also Siren noisemaker Category Rotating aerophones Category ... 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 Microsoft support, http support.microsoft.com ?kbid 313348 KB313348 Category RAID Category ... more details
180px heights 135px perrow 2 align right Image Samsung HD753LJ 01 Top.jpg center A typical hard disk drive center Image Samsung HD753LJ 02 Bottom.jpg center Translation hardware on circuit board center Image Samsung HD753LJ 03 Opened.jpg center Top cover removed center Image Hard disk platters and head.jpg center Disks 2 and actuator arms 4 center Image Samsung HD753LJ 05 Head.jpg center The head and disk center Image Hard disk head.jpg center Head on the disk platter center gallery Too HDD specific, putting better images in intro Digital disk drives are Computer data storage block storage devices . Each disk is divided into logical Block data storage blocks collection of sectors . Blocks are addressed ...Unreferenced date June 2010 Disk storage or disc storage is a general category of storage mechanisms ... to as the Computer data storage media media . A disk drive is a device implementing such a storage ... the media as in compact disc drive and the compact disc. Notable types are the hard disk drive HDD containing a non removable disk, the floppy disk floppy disk drive FDD and its removable floppy disk ... File SixHardDriveFormFactors.jpg thumb Six hard disk drives File Floppy Disk Drives 8 5 3.jpg thumb Three floppy disk drives File Asus CD ROM drive.jpg thumb A CD ROM optical disc drive Background ... disk storage device was the IBM IBM magnetic disk drives IBM 350 RAMAC 350 shipped in 1956 as a part ... , high density storage provided by tape drive s using magnetic tape . Vigorous innovation in disk ... per bit gap between disk and tape, reducing the importance of tape as a complement to disk. Disk ... to disk happens at the granularity of blocks. Originally the disk capacity was quite low and has been ... is the smallest size of data to be stored in a hard disk drive and each file will have many sectors ... into a format that the individual drive can use to store onto the disk itself. The data is then passed ... disk storage.svg thumb 300px Comparison of several forms of disk storage showing tracks not to scale ... more details
Image Secchi disk pattern.svg thumb right Secchi disk pattern The Secchi disk , created in 1865 by Angelo Secchi Pietro Angelo Secchi SJ , is a circular disk used to measure water transparency optics transparency .... The depth at which the pattern on the disk is no longer visible is taken as a measure of the transparency ... . Secchi depth Image Secchi disks.svg thumb right Different kinds of Secchi disks The Secchi ... , for the available light averaged over the Secchi disk depth. The light attenuation coefficient ... surface. ref Idso et al., 1974 ref Secchi disk readings do not provide an exact measure of transparency, as there can be errors due to the sun s glare on the water, or one person may see the disk at one depth, but another, with better eyesight, may see it at a greater depth. However a Secchi disk ... disk measurement should always be taken off the shady side of a boat or dock between 9 a.m. and 3 p.m. ... the disk beyond a point of disappearance, then raising it and lowering it slightly to set the Secchi depth. Another method is to record the depth at which the disk disappears, lower another few feet, then record the depth at which the disk reappears as it is slowly brought up. The Secchi depth is taken as the average of the two values. ref Cole 1994 ref Secchi disk measurements have been ... accessdate 9 February 2011 ref Secchi disk measurements do not indicate how attenuation changes ... Secchi Disk Light Extinction Equation British Ecological Society. Lind, Owen, T. 1979 . Handbook of Common Methods in Limnology. C.V. Mosby Co., St. Louis. Preisendorfer, R. W. 1986 . Secchi disk ... . http www.opticsexpress.org viewmedia.cfm?id 131137&seq 0 Why does the Secchi disk disappear? An imaging ... disk Leszek Bledzki Lead Author Nidhi Nagabhatla Topic Editor Secchi disk . In Encyclopedia of Earth ... Date October 5, 2010 Retrieved January 6, 2012 http www.eoearth.org article Secchi disk http www.webapps.cee.vt.edu ewr environmental teach smprimer secchi secchi.html Secchi Disk Transparency ... more details
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