a mestermint@mint ~ $ sudo fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000b3bfa
Device Boot Start End Blocks Id System
/dev/sda1 1 1824 14647296 83 Linux
/dev/sda2 1824 60802 473737217 5 Extended
/dev/sda5 1824 2067 1951744 82 Linux swap / Solaris
/dev/sda6 2067 60802 471784448 83 Linux
Disk /dev/sdb: 8005 MB, 8005787648 bytes
247 heads, 62 sectors/track, 1021 cylinders
Units = cylinders of 15314 * 512 = 7840768 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6d656c20
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/sdb1 ? 115480 130815 117420209 a OS/2 Boot Manager
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(781, 46, 63) logical=(115479, 150, 52)
Partition 1 has different physical/logical endings:
phys=(365, 76, 37) logical=(130814, 154, 31)
Partition 1 does not end on cylinder boundary.
/dev/sdb2 ? 35492 71069 272413618+ 6d Unknown
Partition 2 has different physical/logical beginnings (non-Linux?):
phys=(367, 78, 57) logical=(35491, 137, 61)
Partition 2 has different physical/logical endings:
phys=(366, 106, 47) logical=(71068, 155, 3)
Partition 2 does not end on cylinder boundary.
/dev/sdb3 ? 1 1 0 6f Unknown
Partition 3 has different physical/logical beginnings (non-Linux?):
phys=(354, 111, 45) logical=(0, 41, 19)
Partition 3 has different physical/logical endings:
phys=(10, 116, 13) logical=(0, 41, 18)
Partition 3 does not end on cylinder boundary.
/dev/sdb4 188435 188438 26336+ 0 Empty
Partition 4 has different physical/logical beginnings (non-Linux?):
phys=(0, 0, 0) logical=(188434, 46, 25)
Partition 4 has different physical/logical endings:
phys=(0, 0, 0) logical=(188437, 154, 59)
Partition 4 does not end on cylinder boundary.
Partition table entries are not in disk order