Magic Rescue scans a block device for file types
it knows how to recover and calls an external
program to extract them. It looks at "magic bytes"
in file contents, so it can be used both as an
undelete utility and for recovering a corrupted
drive or partition. It works on any file system,
but on very fragmented file systems it can only
recover the first chunk of each file. These chunks
are sometimes as big as 50MB, however.