ubuntu@ubuntu:~$ sudo fdisk -l Disk /dev/sda: 40.0 GB, 40007761920 bytes 255 heads, 63 sectors/track, 4864 cylinders, total 78140160 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x671e671e Device Boot Start End Blocks Id System /dev/sda1 * 63 15101099 7550518+ 7 HPFS/NTFS/exFAT /dev/sda2 15101100 78140159 31519530 5 Extended /dev/sda5 15101163 78140159 31519498+ 7 HPFS/NTFS/exFAT Disk /dev/sdb: 1027 MB, 1027342336 bytes 32 heads, 62 sectors/track, 1011 cylinders, total 2006528 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sdb doesn't contain a valid partition table