ALT Linux Rescue is a moderate sized LiveCD distribution that is designed to help sysadmins fix and repair many kinds of problems with systems they are or feel responsible for; so it comes with tools aiding to:
perform hardware diagnostics
resize partitions
fix bootloaders, partitions, filesystems
recover partitions and files
backup and restore to network servers
deal with optical, tape and file archives
optimize filesystem usage
diagnose network problems and remote services
wipe partitions and drives clean
access Android devices, reset Windows passwords, etc.
investigate unauthorized access/security breach events All of that is packaged into a convenient hybrid ISO image file suitable for both CD/DVD media and USB Flash pendrives. The resulting media should be bootable on most x86 systems:
32-bit ones starting roughly with Intel Pentium II/160M or equivalent,
64-bit ones on any AMD64 compatible hardware with BIOS or UEFI.
This image is updated weekly. [Re-upload since I messed something up]