/dev/sdb = System HDD
/dev/sda = RAID HDD

root@GPR0082 /mnt # fdisk -l

Disk /dev/sdb: 500.1 GB, 500106780160 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976771055 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: 0x000f35e5

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048   937193471   468595712   83  Linux
/dev/sdb2       937195518   976769023    19786753    5  Extended
/dev/sdb5       937195520   976769023    19786752   82  Linux swap / Solaris

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   937193471   468595712   83  Linux
/dev/sda2       937195518   976769023    19786753    5  Extended
Partition 2 does not start on physical sector boundary.
/dev/sda5       937195520   976769023    19786752   82  Linux swap / Solaris