TestDisk Utility

Try TestDisk:

http://www.cgsecurity.org/wiki/TestDisk

InfiniBand Testing: Suggested Partitioning for Linux Hosts

Here are my suggestions for partitioning Linux host lab systems for InfiniBand OFED testing:

/boot (~100 MB)
swap (usually 2x RAM, so 4096 MB if 2GB of RAM)
/ (install rest of OS)

Other notes:
1 - use the GRUB bootloader; install into Master Boot Record (MBR)
2 - use EXT3 filesystems for compatibility with the Partimage utility
3 - when gathering data for later restoration, remember to capture the MBR.