lubuntu@lubuntu:~$ sudo fdisk -l
Disk /dev/sda: 250.0 GB, 250000000000 bytes
255 heads, 63 sectors/track, 30394 cylinders, total 488281250 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: 0x000c2ca1
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/sda2 206848 488278015 244035584 7 HPFS/NTFS/exFAT
Disk /dev/sdb: 250.0 GB, 250000000000 bytes
255 heads, 63 sectors/track, 30394 cylinders, total 488281250 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: 0x5c03de99
Device Boot Start End Blocks Id System
/dev/sdb1 2048 499711 248832 83 Linux
/dev/sdb2 501758 488280063 243889153 5 Extended
/dev/sdb5 501760 488280063 243889152 8e Linux LVM
Disk /dev/sdc: 16.0 GB, 16008609792 bytes
255 heads, 63 sectors/track, 1946 cylinders, total 31266816 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: 0xebc6ba53
Device Boot Start End Blocks Id System
/dev/sdc1 * 32 31266815 15633392 c W95 FAT32 (LBA)
Disk /dev/mapper/nvidia_djfebffd: 250.0 GB, 249999998976 bytes
255 heads, 63 sectors/track, 30394 cylinders, total 488281248 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: 0x000c2ca1
Device Boot Start End Blocks Id System
/dev/mapper/nvidia_djfebffd1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/mapper/nvidia_djfebffd2 206848 488278015 244035584 7 HPFS/NTFS/exFAT
Disk /dev/mapper/nvidia_djfebffd1: 104 MB, 104857600 bytes
255 heads, 63 sectors/track, 12 cylinders, total 204800 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: 0x6e697373
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/mapper/nvidia_djfebffd1p1 ? 1936269394 3772285809 918008208 4f QNX4.x 3rd part
/dev/mapper/nvidia_djfebffd1p2 ? 1917848077 2462285169 272218546+ 73 Unknown
/dev/mapper/nvidia_djfebffd1p3 ? 1818575915 2362751050 272087568 2b Unknown
/dev/mapper/nvidia_djfebffd1p4 ? 2844524554 2844579527 27487 61 SpeedStor
Partition table entries are not in disk order
Disk /dev/mapper/nvidia_djfebffd2: 249.9 GB, 249892438016 bytes
255 heads, 63 sectors/track, 30381 cylinders, total 488071168 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: 0x420a0d00
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/mapper/nvidia_djfebffd2p1 ? 1936028272 2154160610 109066169+ 20 Unknown
/dev/mapper/nvidia_djfebffd2p2 ? 1094921044 2976083617 940581287 4c Unknown
/dev/mapper/nvidia_djfebffd2p3 ? 1701994857 2238868341 268436742+ 69 Unknown
/dev/mapper/nvidia_djfebffd2p4 ? 2794192906 2794245570 26332+ 61 SpeedStor
Partition table entries are not in disk order
lubuntu@lubuntu:~$