fdisk output

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 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: 0x0000b11c

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *          63      208844      104391   83  Linux
/dev/sda2          208845     4305419     2048287+  82  Linux swap / Solaris
/dev/sda3         4305420    19679624     7687102+  83  Linux
/dev/sda4        19679625   156296384    68308380   83  Linux

Disk /dev/sdb: 1032 MB, 1032847360 bytes
64 heads, 32 sectors/track, 985 cylinders, total 2017280 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: 0x7bebca20

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           0      759807      379904   17  Hidden HPFS/NTFS

Disk /dev/sdb1: 389 MB, 389021696 bytes
64 heads, 32 sectors/track, 371 cylinders, total 759808 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: 0x7bebca20

     Device Boot      Start         End      Blocks   Id  System
/dev/sdb1p1   *           0      759807      379904   17  Hidden HPFS/NTFS

Disk /dev/mapper/arch_root-image: 536 MB, 536870912 bytes
255 heads, 63 sectors/track, 65 cylinders, total 1048576 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/mapper/arch_lib-modules: 100 MB, 100663296 bytes
255 heads, 63 sectors/track, 12 cylinders, total 196608 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/mapper/arch_usr-share: 465 MB, 465567744 bytes
255 heads, 63 sectors/track, 56 cylinders, total 909312 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