Difference between revisions of "data recovery software"
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| − | == | + | ==Navigation== |
| − | + | {{#lst:software|navbar}}: [[data recovery software|data recovery]] | |
==Overview== | ==Overview== | ||
When drives and storage media become unreadable by the usual methods, it is often possible to recover data using specialized [[software]]. | When drives and storage media become unreadable by the usual methods, it is often possible to recover data using specialized [[software]]. | ||
| − | Damaged data generally falls into one of two categories: | + | Damaged data generally falls into one of two categories, which we'll arbitrarily designate as "rescue" and "recovery": |
| − | * the directory listing can be read, and filesystem-checking utilities (such as scandisk in [[Microsoft Windows]] and [[fsck]] in [[Linux]]) report no errors, but attempting to read files results in error messages, time-outs, or bad data | + | * '''rescue''': the directory listing can be read, and filesystem-checking utilities (such as scandisk in [[Microsoft Windows]] and [[fsck]] in [[Linux]]) report no errors, but attempting to read files results in error messages, time-outs, or bad data |
| − | * directory listings are unavailable or damaged | + | * '''recovery''': directory listings are unavailable or damaged |
Different software is appropriate depending on which of the two situations is occurring. | Different software is appropriate depending on which of the two situations is occurring. | ||
| − | == | + | ==rescue== |
| + | (directories ok, files/data bad) | ||
| + | ===Linux=== | ||
| + | * [[ddrescue]]: like [[dd]], but handles read errors better | ||
| + | ===Windows=== | ||
* [http://www.grc.com/sr/spinrite.htm SpinRite] is an excellent tool for recovering damaged data on otherwise apparently-healthy drives. | * [http://www.grc.com/sr/spinrite.htm SpinRite] is an excellent tool for recovering damaged data on otherwise apparently-healthy drives. | ||
| − | == | + | ==recovery== |
| + | (directories bad, raw data readable) | ||
| + | ===Linux=== | ||
| + | * [[dares (software)|dares]]: attempts to identify known file types; does not recover directory info | ||
| + | * [[testdisk]]: looks for munged partitions, lets you adjust partition table | ||
| + | ===Windows=== | ||
* [http://www.runtime.org/gdb.htm GetDataBack] | * [http://www.runtime.org/gdb.htm GetDataBack] | ||
* [http://pcinspector.de PC Inspector File Recovery] ([http://pcinspector.de/file_recovery/uk/welcome.htm English]) | * [http://pcinspector.de PC Inspector File Recovery] ([http://pcinspector.de/file_recovery/uk/welcome.htm English]) | ||
* [http://www.smartpctools.com/recovery/ Smart PC Solutions]: versions for FAT and [[NTFS]]; "freeware"/"free download" | * [http://www.smartpctools.com/recovery/ Smart PC Solutions]: versions for FAT and [[NTFS]]; "freeware"/"free download" | ||
Revision as of 00:10, 11 September 2008
{{#lst:software|navbar}}: data recovery
Overview
When drives and storage media become unreadable by the usual methods, it is often possible to recover data using specialized software.
Damaged data generally falls into one of two categories, which we'll arbitrarily designate as "rescue" and "recovery":
- rescue: the directory listing can be read, and filesystem-checking utilities (such as scandisk in Microsoft Windows and fsck in Linux) report no errors, but attempting to read files results in error messages, time-outs, or bad data
- recovery: directory listings are unavailable or damaged
Different software is appropriate depending on which of the two situations is occurring.
rescue
(directories ok, files/data bad)
Linux
Windows
- SpinRite is an excellent tool for recovering damaged data on otherwise apparently-healthy drives.
recovery
(directories bad, raw data readable)
Linux
- dares: attempts to identify known file types; does not recover directory info
- testdisk: looks for munged partitions, lets you adjust partition table
Windows
- GetDataBack
- PC Inspector File Recovery (English)
- Smart PC Solutions: versions for FAT and NTFS; "freeware"/"free download"