Undeletion
From Ext4
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* [http://www.data-recovery-software.net/Linux_Recovery.shtml R-Linux] | * [http://www.data-recovery-software.net/Linux_Recovery.shtml R-Linux] | ||
* [http://www.stellarinfo.com/linux-data-recovery.htm Stellar Phoenix Linux Data Recovery] (Commercial, demo available for download) | * [http://www.stellarinfo.com/linux-data-recovery.htm Stellar Phoenix Linux Data Recovery] (Commercial, demo available for download) | ||
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Revision as of 21:22, 1 May 2009
In the FAQ Andreas Dilger states:
In order to ensure that ext3 can safely resume an unlink after a crash, it actually zeros out the block pointers in the inode, whereas ext2 just marks these blocks as unused in the block bitmaps and marks the inode as "deleted" and leaves the block pointers alone. Your only hope is to "grep" for parts of your files that have been deleted and hope for the best.
However, several tools exist that try to recover lost inodes anyway - with varying success:
- extundelete (last updated 2009-04)
- Ext3Grep (last updated 2008-12-14)
- ext3rminator, also available as a Debian package (last updated 2007-01-12)
- salvage (last updated 03/2006)
- undel-ext3.sh (last updated 05/2004)
- Recover (last updated 2002-03-14) is also available as a Debian package, but seems to be strictly limited to ext2 only.
There are also free (as in beer) recovery tools for the Microsoft Windows operating system that are able to recover data off ext2/3 partitions:
- R-Linux
- Stellar Phoenix Linux Data Recovery (Commercial, demo available for download)
