This article is meant to capture several file recovery or undelete options for Arch/Linux. Please contribute to this page using the general format below and keeping it brief.
Special Note Regarding Backups
As an alternative to working with a 'live' partition (mounted or not), it is often preferable to work with an image provided that the filesystem in question isn't too large (flash memory for example) and that you have sufficient free HDD space to accommodate the image file.
Be sure to read the man pages for the utilities listed below to verify that they are capable of working with an image file.
To make an image, one can use dd as follows:
# dd if=/dev/target_partition of=/home/user/partition.image
Foremost is a console program to recover files based on their headers, footers, and internal data structures. This process is commonly referred to as data carving. Foremost can work on image files, such as those generated by dd, Safeback, Encase, etc, or directly on a drive. The headers and footers can be specified by a configuration file or you can use command line switches to specify built-in file types. These built-in types look at the data structures of a given file format allowing for a more reliable and faster recovery.
- Homepage: http://foremost.sourceforge.net
Testdisk and Photorec
TestDisk and Photorec are both open-source data recovery utilities licensed under the terms of the [GNU Public License] (GPL). TestDisk is primarily designed to help recover lost partitions and/or make non-booting disks bootable again when these symptoms are caused by faulty software, certain types of viruses or human error (such as accidentally deleting a Partition Table). Photorec is file data recovery software designed to recover lost files including video, documents and archives from Hard Disks and CDRom and lost pictures (thus, its 'Photo Recovery' name) from digital camera memory. PhotoRec ignores the filesystem and goes after the underlying data, so it will still work even if your media's filesystem has been severely damaged or re-formatted.
Both TestDisk and Photorec are available for Arch i686 and x64_86.
# pacman -S testdisk