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TestDisk is a free and open-source data recovery utility that helps users recover lost partitions or repair corrupted filesystems. TestDisk can collect detailed information about a corrupted drive, which can then be sent to a technician for further analysis. TestDisk supports DOS, Microsoft Windows (i.e. NT 4.0, 2000, XP, Server 2003, Server 2008, Vista, Windows 7, Windows 8.1, Windows 10), Linux, FreeBSD, NetBSD, OpenBSD, SunOS, and MacOS. TestDisk handles non-partitioned and partitioned media. In particular, it recognizes the GUID Partition Table (GPT), Apple partition map, PC/Intel BIOS partition tables, Sun Solaris slice and Xbox fixed partitioning scheme. TestDisk uses a command line user interface. TestDisk can recover deleted files with 97% accuracy.




Features


TestDisk can recover deleted partitions, rebuild partition tables or rewrite the master boot record (MBR).




= Partition recovery

=
TestDisk retrieves the LBA size and CHS geometry of attached data storage devices (i.e. hard disks, memory cards, USB flash drives, and virtual disk images) from the BIOS or the operating system. The geometry information is required for a successful recovery. TestDisk reads sectors on the storage device to determine if the partition table or filesystem on it requires repair (see next section).
TestDisk is able to recognize the following partition table formats:

Apple partition map
GUID Partition Table
Humax
PC/Intel Partition Table (master boot record)
Sun Solaris slice
Xbox fixed partitioning scheme
Non-partitioned media
TestDisk can perform deeper checks to locate partitions that have been deleted from the partition table. However, it is up to the user to look over the list of possible partitions found by TestDisk and to select those that they wish to recover.
After partitions are located, TestDisk can rebuild the partition table and rewrite the MBR.




= Filesystem repair

=
TestDisk can deal with some specific logical filesystem corruption.




= File recovery

=
When a file is deleted, the list of disk clusters occupied by the file is erased, marking those sectors available for use by other files created or modified thereafter. TestDisk can recover deleted files especially if the file was not fragmented and the clusters have not been reused.
There are two file recovery mechanisms in the TestDisk package:

TestDisk proper uses knowledge of the filesystem structure to perform "undelete".
PhotoRec is a "file carver". It does not need any knowledge of the file system, but instead looks for patterns of known file formats in the partition or disk image. It works best on unfragmented files and cannot recover the file name.




Digital forensics


TestDisk can be used in digital forensics to retrieve partitions that were deleted long ago. It can mount various types of disk images including the Expert Witness File Format used by EnCase. Binary disk images, such as those created with ddrescue, can be read by TestDisk as though they were storage devices.
In TestDisk versions prior to version 7, a malformed disk or its image can be used to inject malicious code into a running TestDisk application on Cygwin.




File system support


File system support for TestDisk is shown in the table:

Some features, such as partition table editing and PhotoRec "carving", do not depend on the file system at all.




See also



PhotoRec
List of data recovery software
List of free and open-source software packages




References






External links


TestDisk Wiki
List of news articles about TestDisk and PhotoRec
Data Recovery With TestDisk, Falko Timme, HowtoForge
Digital Forensics using Linux and Open Source Tools
Test Disk Team:
Main Contributor: Christophe Grenier. Location: Paris, France. URL: cgsecurity.org. He started the project in 1998 and is still the main developer. He is also responsible for the packaging of TestDisk & PhotoRec for DOS, Windows, Linux (generic version), MacOS X, and Fedora distribution.

Kata Kunci Pencarian:

• System Rescue
• Pemulihan data
• TestDisk
• PhotoRec
• Data recovery
• Redo Rescue
• Malware
• SystemRescue
• List of free and open-source software packages
• FIPS (computer program)
• List of portable software
• Gpart

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Daftar Isi

• TestDisk Stuck At 99% - cgsecurity.org
• TestDisk Freezing, Analyse cylinder at 60801/60800: 99%
• TestDisk : Read error (pas de partition trouvée) - cgsecurity.org
• TestDisk stops at 99% while analysing for lost partitions
• cgsecurity.org - Index page
• TestDisk stalls at 99%, after working previously - cgsecurity.org
• TestDisk hangs at a particular cylinder - cgsecurity.org
• How do I stop testdisk - cgsecurity.org
• How can I access files on IMAGE.DD file? - cgsecurity.org
• Find ZFS partition - cgsecurity.org

TestDisk Stuck At 99% - cgsecurity.org

Aug 12, 2012 · Reading bad sectors or memory errors like softbads causes that testdisk hangs. Please describe your situation. Is your partition still in your partition table (need a screen shot …

TestDisk Freezing, Analyse cylinder at 60801/60800: 99%

Nov 11, 2017 · When attempting to run TestDisk>analyse>quick search, the progress almost immediately jumps from 00% to 99% and freezes. Any help or suggestions on getting past this …

TestDisk : Read error (pas de partition trouvée) - cgsecurity.org

Apr 4, 2013 · Voilà, j'ai été bloqué à cet endroit. J'ai ensuite réalisé un testDisk MBR pour réinitialiser le MBR mais désormais, Windows veut "formater le disque E:" pour pouvoir y …

TestDisk stops at 99% while analysing for lost partitions

Sep 28, 2022 · This is the log file Wed Sep 28 14:46:11 2022 Command line: TestDisk TestDisk 7.2-WIP, Data Recovery Utility, July 2022

cgsecurity.org - Index page

3 days ago · Mit TestDisk gelöschte Dateien wiederherstellen 70 Topics 200 Posts Last post Re : Keine Undelete ...

TestDisk stalls at 99%, after working previously - cgsecurity.org

May 31, 2018 · After some googling I found someone recommended just moving TestDisk to the drive you want to copy to. So I closed all the way out of TestDisk, and moved the TestDisk …

TestDisk hangs at a particular cylinder - cgsecurity.org

Then I turned to TestDisk, which can see this partition. But a quick search found nothing, only with the warning message: the filesystem may be damaged. Then I ran a deeper search, and …

How do I stop testdisk - cgsecurity.org

Nov 27, 2013 · If testdisk hangs, you can stop it and retry to copy files wirhin your affected folder by starting with the last files and not the first ones until testdisk hangs again. The result would …

How can I access files on IMAGE.DD file? - cgsecurity.org

Dec 20, 2017 · I have been working with Testdisk-7.0 the last 5 days, because I found my 2Tb internal HD was unable to access normally. After reading quite a lot of the technical …

Find ZFS partition - cgsecurity.org

Sun Nov 15 16:05:34 2020 Command line: TestDisk /log /dev/loop26 TestDisk 7.1, Data Recovery Utility, July 2019 Christophe GRENIER <grenier@cgsecurity.org> https://www.cgsecurity.org …