root@markwalling:/mnt# fdisk -l

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System

Disk /dev/hda: 80.0 GB, 80026361856 bytes
16 heads, 63 sectors/track, 155061 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1               1        1984      999904+  82  Linux swap
/dev/hda2   *        1985      155061    77150808   83  Linux
root@markwalling:/mnt# mount /dev/sda1 /mnt/exhdd/
mount: /dev/sda1 is not a valid block device
root@markwalling:/mnt#