/diskdump -r /dev/disk2 bootpartition.bin
diskdump v0.1 - (C) Dave Chapman 2005
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[INFO] Reading partition table...
Bad boot sector signature
Part Type Start Sector End Sector Size (MB)
0 0x90 -1073744064 2147479335 1572862
1 0xbf 9412 -1073734653 1572862
2 0xfe -1881115580 -1881100621 7
3 0x00 -2139062144 -2139062145 0
[INFO] Seeking to sector -1073744064
[WARN] Seek error - reading -1073744064 sectors instead