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Data recovery

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stored data. Sometimes prior knowledge of the data stored and the error detection and correction codes can be used to recover even erroneous data. However, if the underlying physical drive is degraded badly enough, at least the hardware surrounding the data must be replaced, or it might even be necessary to apply laboratory techniques to the physical recording medium. Each of the approaches is progressively more expensive, and as such progressively more rarely sought.
504: 79: 2145: 461: 38: 181: 476:(generally a map of bad sectors and tuning parameters) and other information required to properly access data on the drive. Replacement boards often need this information to effectively recover all of the data. The replacement board may need to be reprogrammed. Some manufacturers (Seagate, for example) store this information on a serial 491:; this portion of the drive, which is not directly accessible to the end user, usually contains drive's firmware and adaptive data that helps the drive operate within normal parameters. One function of the system area is to log defective sectors within the drive; essentially telling the drive where it can and cannot write data. 368:" from a storage medium by the users. Typically, the contents of deleted files are not removed immediately from the physical drive; instead, references to them in the directory structure are removed, and thereafter space the deleted data occupy is made available for later data overwriting. In the mind of 657:
When a hard disk drive fails, the importance of getting the data off the drive is the top priority. The longer a faulty drive is used, the more likely further data loss is to occur. Creating an image of the drive will ensure that there is a secondary copy of the data on another device, on which it is
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Recovery experts do not always need to have physical access to the damaged hardware. When the lost data can be recovered by software techniques, they can often perform the recovery using remote access software over the Internet, LAN or other connection to the physical location of the damaged media.
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Substantial criticism has followed, primarily dealing with the lack of any concrete examples of significant amounts of overwritten data being recovered. Gutmann's article contains a number of errors and inaccuracies, particularly regarding information about how data is encoded and processed on hard
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The sector lists are also stored on various chips attached to the PCB, and they are unique to each hard disk drive. If the data on the PCB do not match what is stored on the platter, then the drive will not calibrate properly. In most cases the drive heads will click because they are unable to find
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or drive recovery techniques ranging from software-based recovery of corrupted data, to hardware- and software-based recovery of damaged service areas (also known as the hard disk drive's "firmware"), to hardware replacement on a physically damaged drive which allows for the extraction of data to a
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Recovering data from physically damaged hardware can involve multiple techniques. Some damage can be repaired by replacing parts in the hard disk. This alone may make the disk usable, but there may still be logical damage. A specialized disk-imaging procedure is used to recover every readable bit
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operating system can be reinstalled on a computer that is already licensed for it. The reinstallation can be done by downloading the operating system or by using a "restore disk" provided by the computer manufacturer. Eric Lundgren was fined and sentenced to U.S. federal prison in April 2018 for
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Data damage can be caused when, for example, a file is written to a sector on the drive that has been damaged. This is the most common cause in a failing drive, meaning that data needs to be reconstructed to become readable. Corrupted documents can be recovered by several software methods or by
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The hard drive is repaired in order to get it running in some form, or at least in a state suitable for reading the data from it. For example, if heads are bad they need to be changed; if the PCB is faulty then it needs to be fixed or replaced; if the spindle motor is bad the platters and heads
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In the list of logical failures of hard disks, a logical bad sector is the most common fault leading data not to be readable. Sometimes it is possible to sidestep error detection even in software, and perhaps with repeated reading and statistical analysis recover at least some of the underlying
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above the platter surface, and the average dust particles found in a normal environment are typically around 30,000 nanometers in diameter. When these dust particles get caught between the read/write heads and the platter, they can cause new head crashes that further damage the platter and thus
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Physical damage to a hard drive, even in cases where a head crash has occurred, does not necessarily mean there will be a permanent loss of data. The techniques employed by many professional data recovery companies can typically salvage most, if not all, of the data that had been lost when the
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Logical failures occur when the hard drive devices are functional but the user or automated-OS cannot retrieve or access data stored on them. Logical failures can occur due to corruption of the engineering chip, lost partitions, firmware failure, or failures during formatting/re-installation.
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can image media despite intermittent errors, and image raw data when there is partition table or file system damage. This type of data recovery can be performed by people without expertise in drive hardware as it requires no special physical equipment or access to platters.
591:(FTL). When the FTL modifies a sector it writes the new data to another location and updates the map so the new data appear at the target LBA. This leaves the pre-modification data in place, with possibly many generations, and recoverable by data recovery software. 435:
compromise the recovery process. Furthermore, end users generally do not have the hardware or technical expertise required to make these repairs. Consequently, data recovery companies are often employed to salvage important data with the more reputable ones using
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After the drive has been cloned to a new drive, it is suitable to attempt the retrieval of lost data. If the drive has failed logically, there are a number of reasons for that. Using the clone it may be possible to repair the partition table or
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or a USB drive instead of the corrupted drive in question. Many Live CDs or DVDs provide a means to mount the system drive and backup drives or removable media, and to move the files from the system drive to the backup media with a
527:, or to (intermittent) media errors. In the majority of these cases, at least a portion of the original data can be recovered by repairing the damaged partition table or file system using specialized data recovery software such as 372:, deleted files cannot be discoverable through a standard file manager, but the deleted data still technically exists on the physical drive. In the meantime, the original file contents remain, often several disconnected 391:, hidden, or deleted, rather than damaged, are recovered. Sometimes data present in the computer gets encrypted or hidden due to reasons like virus attacks which can only be recovered by some computer forensic experts. 603:, etc.) gets lost, deleted and formatted due to circumstances like virus attack, accidental deletion or accidental use of SHIFT+DELETE. In these cases, data recovery software is used to recover/restore the data files. 315:
The most common data recovery scenarios involve an operating system failure, malfunction of a storage device, logical failure of storage devices, accidental damage or deletion, etc. (typically, on a single-drive,
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Most physical damage cannot be repaired by end users. For example, opening a hard disk drive in a normal environment can allow airborne dust to settle on the platter and become caught between the platter and the
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from the surface. Once this image is acquired and saved on a reliable medium, the image can be safely analyzed for logical damage and will possibly allow much of the original file system to be reconstructed.
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drives. Although Gutmann's theory may be correct, there is no practical evidence that overwritten data can be recovered, while research has shown to support that overwritten data cannot be recovered.
565:. In 2001, he presented another paper on a similar topic. To guard against this type of data recovery, Gutmann and Colin Plumb designed a method of irreversibly scrubbing data, known as the 615:
Eventually, if the final, physical storage medium has indeed been disturbed badly enough, recovery will not be possible using any means; the information has irreversibly been lost.
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new drive. If a drive recovery is necessary, the drive itself has typically failed permanently, and the focus is rather on a one-time recovery, salvaging whatever data can be read.
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Remote recovery requires a stable connection with an adequate bandwidth. However, it is not applicable where access to the hardware is required, as in cases of physical damage.
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Sometimes data can be recovered using relatively simple methods and tools; more serious cases can require expert intervention, particularly if parts of files are irrecoverable.
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may have occurred. However, if the hard drive can be repaired and a full image or clone created, then the logical file structure can be rebuilt in most instances.
1022:: also known as TSK, a suite of forensic analysis tools developed by Brian Carrier for UNIX, Linux and Windows systems. TSK includes the Autopsy forensic browser. 635:
Usually, there are four phases when it comes to successful data recovery, though that can vary depending on the type of data corruption and recovery required.
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After data has been physically overwritten on a hard disk drive, it is generally assumed that the previous data are no longer possible to recover. In 1996,
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The term "logical damage" refers to situations in which the error is not a problem in the hardware and requires software-level solutions.
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Data recovery can be a very simple or technical challenge. This is why there are specific software companies specialized in this field.
1321: 1659: 579:(SSD) overwrite data differently from hard disk drives (HDD) which makes at least some of their data easier to recover. Most SSDs use 558: 1471: 403:
can have their metallic substrate or dye layer scratched off; hard disks can suffer from a multitude of mechanical failures, such as
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producing 28,000 restore disks and intending to distribute them for about 25 cents each as a convenience to computer repair shops.
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A wide variety of failures can cause physical damage to storage media, which may result from human errors and natural disasters.
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and consistently storing valuable data files (or copies of them) on a different partition from the replaceable OS system files.
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Media that has suffered a catastrophic electronic failure requires data recovery in order to salvage its contents.
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based live CD, useful for repairing unbootable computer systems and retrieving data after a system crash
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is a process of retrieving deleted, inaccessible, lost, corrupted, damaged, or formatted data from
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Of course, there are exceptions to this, such as cases where severe damage to the hard drive
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The process is essentially no different from what the end user could perform by themselves.
325: 297: 1651: 1016:: a suite of utilities for assisting in forensic analysis of a UNIX system after a break-in 136: 2192: 2034: 1969: 1959: 1929: 1872: 1843: 1833: 1714:"Electronics-recycling innovator is going to prison for trying to extend computers' lives" 1536: 1515: 1495: 900:: Mac OS X data recovery program which works on USB sticks, optical media, and hard drives 600: 520: 473: 427: 265: 257: 249: 1231: 759:-based Live CD with a focus on being small and fast, useful for computer and data rescue 503: 2122: 2107: 2044: 2039: 2004: 1984: 1979: 1934: 1909: 1828: 1019: 811: 778: 566: 338: 317: 1261: 2161: 2117: 2112: 2009: 1999: 1848: 1813: 1769: 1111: 365: 253: 2086: 2019: 2014: 1994: 1989: 1919: 1914: 1889: 1882: 1858: 1382: 1131: 856: 820: 580: 552: 540: 330: 961:: a suite of utilities that has a file recovery component for Windows XP and later 460: 27:
Process of salvaging inaccessible data from corrupted or damaged secondary storage
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In some cases, data on a hard disk drive can be unreadable due to damage to the
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is the recovery of parts of damaged files using knowledge of their structure.
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Sometimes, data present in the physical drives (Internal/External Hard disk,
2029: 1924: 1121: 1081: 1050: 1047:: a free disk cloning, disk imaging, data recovery, and deployment boot disk 894:: recovers data from optical discs, USB sticks, flash drives and hard drives 891: 720: 440: 436: 431: 384: 237: 658:
safe to perform testing and recovery procedures without harming the source.
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Data recovery cannot always be done on a running system. As a result, a
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Another scenario involves a drive-level failure, such as a compromised
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chip, which can be removed and transferred to the replacement board.
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Logical recovery of files, partition, MBR and filesystem structures
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https://kaleron.edu.pl/throwing-Gutmanns-algorithm-into-the-trash
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Secure Deletion of Data from Magnetic and Solid-State Memory
1065:: a free and open-source recovery system for Android devices 998:
Center for Information Systems Security Studies and Research
952:: free, open source, multi-platform. recover files and lost 273: 912:: a suite of utilities that has a file recovery component 430:. During normal operation, read/write heads float 3 to 6 686:
manually reconstructing the document using a hex editor.
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Result of a failed data recovery from a hard disk drive.
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The term "data recovery" is also used in the context of
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and used by several disk-scrubbing software packages.
1683:"[Infographic] Four Phases Of Data Recovery" 870:: multi-platform data recovery and disk editing tool 864:: data recovery application for Mac OS X and Windows 990:file recovery program, originally developed by the 876:: generates error-correction data for optical discs 842:, the GNU partition editor, capable of calling fsck 654:
Image the drive to a new drive or a disk image file
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In a third scenario, files have been accidentally "
103:. Unsourced material may be challenged and removed. 775:: contains utilities for data recovery under Linux 906:: for Windows 7 and later; includes data recovery 583:to store data in pages and blocks, referenced by 515:Corrupt partitions and file systems, media errors 1539:, Peter Gutmann, IBM T.J. Watson Research Center 992:U.S. Air Force Office of Special Investigations 2071: 1777: 1747:Operating Systems: Design And Implementation, 946:: data recovery utility for Windows and macOS 495:the data matching what is stored on the PCB. 8: 1745:Tanenbaum, A. & Woodhull, A. S. (1997). 1236:Disklabs Digital Forensics and Data Recovery 1436:"Hiding Data in Hard Drive's Service Areas" 1322:"Data Recovery On A 3TB Seagate Hard Drive" 66:Learn how and when to remove these messages 2144: 2078: 2064: 2056: 1784: 1770: 1762: 483:Each hard disk drive has what is called a 715:List of live CDs § Rescue and repair 468:A common misconception is that a damaged 224:Learn how and when to remove this message 163:Learn how and when to remove this message 1553:. National Bureau of Economic Research. 1405:"Firmware Adaptation Service - ROM Swap" 1345:"DIY data recovery could mean "bye-bye"" 1004:: by AccessData, used by law enforcement 682:Repair damaged files that were retrieved 1529:Data Remanence in Semiconductor Devices 1163: 918:: advanced multi-platform program with 337:. Such cases can often be mitigated by 1631:Wright, Dr. Craig (15 January 2009). 7: 1302:from the original on 1 December 2022 1272:from the original on 1 December 2022 1242:from the original on 1 December 2022 1008:Open Computer Forensics Architecture 324:, or DVD by booting directly from a 101:adding citations to reliable sources 1681:Stanley Morgan (28 December 2012). 1292:"Data Recovery – Backup Technology" 1212:from the original on 28 August 2022 1182:from the original on 28 August 2022 789:Windows Preinstallation Environment 1650:Barton, Andre (17 December 2012). 1588:"Disk Wiping – One Pass is Enough" 1434:Ariel Berkman (14 February 2013). 1010:: An open-source program for Linux 407:, PCB failure, and failed motors; 25: 1712:Washington Post (26 April 2018). 1693:from the original on 2 April 2015 1652:"Data Recovery Over the Internet" 1639:from the original on 23 May 2010. 1355:from the original on 26 July 2019 595:Lost, deleted, and formatted data 201:and remove advice or instruction. 47:This article has multiple issues. 2143: 1749:2nd ed. New York: Prentice Hall. 1662:from the original on 27 May 2015 1549:Feenberg, Daniel (14 May 2004). 1137:Hidden file and hidden directory 832:: a consistency checker for UNIX 179: 77: 36: 1724:from the original on 2 May 2018 1616:. 18 March 2009. Archived from 1594:. 17 March 2009. Archived from 1557:from the original on 9 May 2008 1474:. 16 April 2013. Archived from 765:: capable of creating bootable 646:should be moved to a new drive. 587:(LBA) which are managed by the 335:optical disc authoring software 88:needs additional citations for 55:or discuss these issues on the 1349:The Ontrack Data Recovery Blog 1147:List of data recovery software 1127:Error detection and correction 888:: data drive recovery solution 704:List of data recovery software 1: 2149:List of data-erasing software 2133:Physical information security 1633:"Overwriting Hard Drive Data" 1152:List of data-erasing software 1033:List of disk cloning software 387:, where data which have been 882:: a Windows recovery program 823:: a consistency checker for 814:: a consistency checker for 804:: a consistency checker for 769:USB drives for data recovery 631:Four phases of data recovery 292:that prevents it from being 738:: a lightweight variant of 2209: 1232:"What is logical failure?" 1097:Continuous data protection 1087:Comparison of file systems 1036: 1030: 975: 712: 642:Repair the hard disk drive 550: 2141: 2093: 1799: 1351:. Ontrack Data Recovery. 1202:"Data Recovery Explained" 1172:"Data Recovery Explained" 1063:Team Win Recovery Project 920:text-based user interface 904:MiniTool Partition Wizard 886:Hetman Partition Recovery 563:magnetic force microscopy 348:or drive partition, or a 1535:21 February 2007 at the 747:32-bit operating systems 2098:Anti–computer forensics 1514:9 December 2007 at the 1494:17 October 2016 at the 1266:www.streetdirectory.com 589:flash translation layer 585:logical block addresses 350:hard disk drive failure 2183:Transaction processing 1489:Data Recovery Software 898:Mac Data Recovery Guru 508: 465: 439:dust- and static-free 284:subsystems, and other 1014:The Coroner's Toolkit 965:Windows File Recovery 944:Stellar Data Recovery 922:used to recover files 855:: recovers data from 506: 470:printed circuit board 463: 1965:Protection (privacy) 1656:Data Recovery Digest 1620:on 27 November 2012. 1598:on 2 September 2012. 1343:Vasconcelos, Pedro. 1332:on 13 February 2017. 796:Consistency checkers 740:Microsoft Windows XP 619:Remote data recovery 199:rewrite this article 97:improve this article 1452:on 26 February 2015 808:and Windows systems 744:Windows Server 2003 447:Recovery techniques 2188:Hard disk software 1687:dolphindatalab.com 1614:anti-forensics.com 1592:anti-forensics.com 1092:Computer forensics 978:Computer forensics 672:master boot record 607:Logical bad sector 577:Solid-state drives 509: 466: 415:failure occurred. 411:can simply break. 356:, or updating the 354:master boot record 286:electronic devices 262:solid-state drives 18:Hard disk recovery 2155: 2154: 2053: 2052: 2045:Wrangling/munging 1895:Format management 1478:on 16 April 2013. 1117:Data preservation 986:: an open-source 339:disk partitioning 246:secondary storage 234: 233: 226: 216: 215: 192:a manual or guide 173: 172: 165: 147: 70: 16:(Redirected from 2200: 2147: 2146: 2080: 2073: 2066: 2057: 1786: 1779: 1772: 1763: 1734: 1733: 1731: 1729: 1709: 1703: 1702: 1700: 1698: 1678: 1672: 1671: 1669: 1667: 1647: 1641: 1640: 1628: 1622: 1621: 1606: 1600: 1599: 1584: 1578: 1573: 1567: 1566: 1564: 1562: 1546: 1540: 1525: 1519: 1504: 1498: 1486: 1480: 1479: 1468: 1462: 1461: 1459: 1457: 1451: 1445:. 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2108:Data remanence 2105: 2100: 2094: 2091: 2090: 2085: 2083: 2082: 2075: 2068: 2060: 2051: 2050: 2048: 2047: 2042: 2037: 2032: 2027: 2022: 2017: 2012: 2007: 2002: 1997: 1992: 1987: 1982: 1977: 1972: 1967: 1962: 1957: 1952: 1950:Pre-processing 1947: 1942: 1937: 1932: 1927: 1922: 1917: 1912: 1907: 1902: 1897: 1892: 1887: 1886: 1885: 1880: 1875: 1861: 1856: 1851: 1846: 1841: 1836: 1831: 1826: 1821: 1816: 1811: 1806: 1800: 1797: 1796: 1791: 1789: 1788: 1781: 1774: 1766: 1760: 1759: 1750: 1741: 1738: 1736: 1735: 1704: 1673: 1642: 1623: 1601: 1579: 1568: 1541: 1520: 1499: 1481: 1463: 1426: 1396: 1385:on 27 May 2015 1366: 1335: 1313: 1283: 1253: 1223: 1193: 1162: 1160: 1157: 1155: 1154: 1149: 1144: 1139: 1134: 1129: 1124: 1119: 1114: 1109: 1104: 1099: 1094: 1089: 1084: 1079: 1073: 1071: 1068: 1067: 1066: 1060: 1054: 1048: 1031:Main article: 1028: 1025: 1024: 1023: 1020:The Sleuth Kit 1017: 1011: 1005: 999: 973: 970: 969: 968: 962: 956: 947: 941: 935: 929: 923: 913: 907: 901: 895: 889: 883: 877: 871: 865: 859: 848: 845: 844: 843: 833: 827: 818: 812:Disk First Aid 809: 797: 794: 793: 792: 786: 779:SystemRescueCD 776: 770: 760: 750: 710: 707: 705: 702: 692: 689: 688: 687: 683: 680: 676: 675: 667: 664: 660: 659: 655: 652: 648: 647: 643: 640: 632: 629: 620: 617: 608: 605: 596: 593: 567:Gutmann method 548: 545: 516: 513: 500: 499:Logical damage 497: 457: 454: 448: 445: 396: 393: 312: 309: 270:magnetic tapes 232: 231: 214: 213: 187: 185: 178: 171: 170: 85: 83: 76: 71: 45: 44: 42: 35: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 2205: 2194: 2191: 2189: 2186: 2184: 2181: 2179: 2176: 2174: 2173:Computer data 2171: 2169: 2168:Data recovery 2166: 2165: 2163: 2150: 2140: 2134: 2131: 2129: 2128:DoD 5220.22-M 2126: 2124: 2121: 2119: 2118:File deletion 2116: 2114: 2113:Factory reset 2111: 2109: 2106: 2104: 2103:Data recovery 2101: 2099: 2096: 2095: 2092: 2088: 2081: 2076: 2074: 2069: 2067: 2062: 2061: 2058: 2046: 2043: 2041: 2038: 2036: 2033: 2031: 2028: 2026: 2023: 2021: 2018: 2016: 2013: 2011: 2008: 2006: 2003: 2001: 1998: 1996: 1993: 1991: 1988: 1986: 1983: 1981: 1978: 1976: 1973: 1971: 1968: 1966: 1963: 1961: 1958: 1956: 1953: 1951: 1948: 1946: 1943: 1941: 1938: 1936: 1933: 1931: 1928: 1926: 1923: 1921: 1918: 1916: 1913: 1911: 1908: 1906: 1903: 1901: 1898: 1896: 1893: 1891: 1888: 1884: 1881: 1879: 1876: 1874: 1871: 1870: 1869: 1865: 1862: 1860: 1857: 1855: 1852: 1850: 1847: 1845: 1842: 1840: 1837: 1835: 1832: 1830: 1827: 1825: 1822: 1820: 1817: 1815: 1812: 1810: 1807: 1805: 1802: 1801: 1798: 1794: 1787: 1782: 1780: 1775: 1773: 1768: 1767: 1764: 1758: 1754: 1753:Data recovery 1751: 1748: 1744: 1743: 1739: 1723: 1719: 1715: 1708: 1705: 1692: 1688: 1684: 1677: 1674: 1661: 1657: 1653: 1646: 1643: 1638: 1634: 1627: 1624: 1619: 1615: 1611: 1605: 1602: 1597: 1593: 1589: 1583: 1580: 1577: 1572: 1569: 1556: 1552: 1545: 1542: 1538: 1534: 1531: 1530: 1524: 1521: 1517: 1513: 1510: 1509: 1503: 1500: 1497: 1493: 1490: 1485: 1482: 1477: 1473: 1467: 1464: 1448: 1444: 1443:recover.co.il 1437: 1430: 1427: 1414: 1410: 1406: 1400: 1397: 1384: 1380: 1376: 1370: 1367: 1354: 1350: 1346: 1339: 1336: 1331: 1327: 1323: 1317: 1314: 1301: 1297: 1293: 1287: 1284: 1271: 1267: 1263: 1257: 1254: 1241: 1237: 1233: 1227: 1224: 1211: 1207: 1203: 1197: 1194: 1181: 1177: 1173: 1167: 1164: 1158: 1153: 1150: 1148: 1145: 1143: 1140: 1138: 1135: 1133: 1130: 1128: 1125: 1123: 1120: 1118: 1115: 1113: 1112:Data curation 1110: 1108: 1105: 1103: 1100: 1098: 1095: 1093: 1090: 1088: 1085: 1083: 1080: 1078: 1075: 1074: 1069: 1064: 1061: 1058: 1055: 1052: 1049: 1046: 1043: 1042: 1040: 1034: 1027:Imaging tools 1026: 1021: 1018: 1015: 1012: 1009: 1006: 1003: 1000: 997: 993: 989: 985: 982: 981: 979: 971: 966: 963: 960: 957: 955: 951: 948: 945: 942: 939: 936: 933: 930: 927: 924: 921: 917: 914: 911: 908: 905: 902: 899: 896: 893: 890: 887: 884: 881: 878: 875: 872: 869: 866: 863: 860: 858: 854: 851: 850: 847:File recovery 846: 841: 837: 834: 831: 828: 826: 822: 819: 817: 813: 810: 807: 803: 800: 799: 795: 790: 787: 784: 780: 777: 774: 771: 768: 764: 761: 758: 754: 751: 748: 745: 741: 737: 734: 733: 732: 730: 726: 722: 716: 708: 703: 701: 698: 690: 684: 681: 678: 677: 673: 668: 665: 662: 661: 656: 653: 650: 649: 644: 641: 638: 637: 636: 630: 628: 625: 618: 616: 613: 606: 604: 602: 594: 592: 590: 586: 582: 578: 574: 570: 568: 564: 560: 559:Peter Gutmann 554: 546: 544: 542: 537: 534: 530: 526: 522: 514: 512: 505: 498: 496: 492: 490: 486: 481: 479: 475: 471: 462: 455: 453: 446: 444: 442: 438: 433: 429: 423: 421: 416: 412: 410: 406: 402: 394: 392: 390: 386: 382: 377: 375: 371: 367: 362: 359: 355: 351: 347: 342: 340: 336: 332: 327: 323: 319: 310: 308: 305: 301: 299: 295: 291: 287: 283: 279: 275: 271: 267: 263: 259: 255: 251: 247: 243: 242:data recovery 239: 228: 225: 210: 200: 195: 193: 188:This article 186: 177: 176: 167: 164: 156: 153:February 2012 145: 142: 138: 135: 131: 128: 124: 121: 117: 114: â€“  113: 109: 108:Find sources: 102: 98: 92: 91: 86:This article 84: 80: 75: 74: 69: 67: 60: 59: 54: 53: 48: 43: 34: 33: 30: 19: 2102: 2087:Data erasure 1974: 1955:Preservation 1945:Philanthropy 1809:Augmentation 1746: 1726:. Retrieved 1717: 1707: 1695:. Retrieved 1686: 1676: 1664:. Retrieved 1655: 1645: 1626: 1618:the original 1613: 1604: 1596:the original 1591: 1582: 1571: 1559:. Retrieved 1544: 1528: 1523: 1507: 1502: 1484: 1476:the original 1466: 1454:. Retrieved 1447:the original 1442: 1429: 1417:. Retrieved 1413:the original 1408: 1399: 1387:. Retrieved 1383:the original 1378: 1369: 1357:. Retrieved 1348: 1338: 1330:the original 1325: 1316: 1304:. Retrieved 1296:www.dell.com 1295: 1286: 1274:. Retrieved 1265: 1256: 1244:. Retrieved 1235: 1226: 1214:. Retrieved 1205: 1196: 1184:. Retrieved 1175: 1166: 1132:File carving 988:command-line 857:optical disc 838:: a GUI for 821:Disk Utility 718: 694: 691:Restore disk 634: 626: 622: 614: 610: 598: 581:flash memory 575: 571: 556: 553:Data erasure 541:Data carving 538: 518: 510: 493: 489:service area 488: 484: 482: 467: 450: 424: 417: 413: 405:head crashes 398: 378: 363: 343: 331:file manager 314: 306: 302: 296:by the host 241: 235: 220: 204: 197:Please help 189: 159: 150: 140: 133: 126: 119: 107: 95:Please help 90:verification 87: 63: 56: 50: 49:Please help 46: 29: 2015:Stewardship 1905:Integration 1854:Degradation 1839:Compression 1819:Archaeology 1804:Acquisition 1409:pcb4you.com 1326:acsdata.com 1206:www.ibm.com 1176:www.ibm.com 880:GetDataBack 525:file system 485:system area 346:file system 290:file system 2162:Categories 2035:Validation 1970:Publishing 1960:Processing 1930:Management 1844:Corruption 1834:Collection 1456:23 January 1306:1 December 1276:1 December 1246:1 December 1216:1 December 1159:References 1142:Undeletion 1045:Clonezilla 1039:Disk image 1037:See also: 976:See also: 954:partitions 874:dvdisaster 840:GNU parted 783:Arch Linux 713:See also: 551:See also: 441:cleanrooms 432:nanometers 207:April 2016 123:newspapers 52:improve it 2040:Warehouse 2005:Scrubbing 1985:Retention 1980:Reduction 1935:Migration 1910:Integrity 1878:Transform 1829:Cleansing 1186:28 August 1122:Data loss 1082:Cleanroom 972:Forensics 892:IsoBuster 721:boot disk 601:Pen Drive 437:class 100 389:encrypted 385:espionage 374:fragments 370:end users 318:partition 238:computing 58:talk page 2010:Security 2000:Scraping 1975:Recovery 1849:Curation 1814:Analysis 1722:Archived 1697:23 March 1691:Archived 1666:29 April 1660:Archived 1637:Archived 1555:Archived 1533:Archived 1512:Archived 1492:Archived 1353:Archived 1300:Archived 1270:Archived 1240:Archived 1210:Archived 1180:Archived 1070:See also 1057:ddrescue 984:Foremost 950:TestDisk 916:PhotoRec 853:CDRoller 825:Mac OS X 816:Mac OS 9 767:Mac OS X 729:live USB 709:Bootable 533:ddrescue 529:Testdisk 420:platters 381:forensic 358:firmware 264:(SSDs), 260:(HDDs), 2020:Storage 1995:Science 1990:Quality 1920:Lineage 1915:Library 1890:Farming 1873:Extract 1859:Editing 1359:26 July 836:gparted 773:Knoppix 725:live CD 697:Windows 679:Phase 4 663:Phase 3 651:Phase 2 639:Phase 1 401:CD-ROMs 366:deleted 322:Live CD 316:single- 294:mounted 137:scholar 2193:Backup 1940:Mining 1900:Fusion 1757:Curlie 1561:21 May 1419:27 May 1389:27 May 1077:Backup 938:Recuva 802:CHKDSK 757:Debian 753:Finnix 736:BartPE 478:EEPROM 300:(OS). 139:  132:  125:  118:  110:  1728:2 May 1450:(PDF) 1439:(PDF) 781:: an 409:tapes 311:About 254:files 144:JSTOR 130:books 2030:Type 1925:Loss 1883:Load 1793:Data 1730:2018 1699:2015 1668:2015 1563:2008 1458:2015 1421:2015 1391:2015 1361:2019 1308:2022 1278:2022 1248:2022 1218:2022 1188:2022 994:and 868:DMDE 830:fsck 755:: a 695:The 282:RAID 278:DVDs 116:news 1868:ELT 1864:ETL 1824:Big 1755:at 996:NPS 806:DOS 742:or 523:or 487:or 333:or 326:ROM 274:CDs 252:or 236:In 99:by 2164:: 1720:. 1716:. 1689:. 1685:. 1658:. 1654:. 1635:. 1612:. 1590:. 1441:. 1407:. 1377:. 1347:. 1324:. 1298:. 1294:. 1268:. 1264:. 1238:. 1234:. 1208:. 1204:. 1178:. 1174:. 1051:dd 727:, 723:, 443:. 280:, 276:, 272:, 268:, 248:, 240:, 61:. 2079:e 2072:t 2065:v 1866:/ 1785:e 1778:t 1771:v 1732:. 1701:. 1670:. 1565:. 1460:. 1423:. 1393:. 1363:. 1310:. 1280:. 1250:. 1220:. 1190:. 227:) 221:( 209:) 205:( 194:. 166:) 160:( 155:) 151:( 141:· 134:· 127:· 120:· 93:. 68:) 64:( 20:)

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