iPod drive data recovery tool is non-destructive and read only software that provides full recovery of your accidently deleted media files and folders. iPod corrupt disk mode retrieval tool revives your lost mp3, mp4, m4v, m4b, m4a, apple loss less audio, video songs and audible audio book.
I wanted to recover data from a failing hard drive, and asked on IRC if any good tools existed for Ubuntu. Someone pointed me towards GNU ddrescue (named
gddrescue in Debian and Ubuntu), which is designed for rescuing data from any file or block device.