I've just taken delivery of a Dimension 9150 and it was originally configured as a Raid 0.  I have reverted the two disks to non-raid and I need to start from scratch and install an operating system (XP Pro).

 

When I get to the bit of the set up where I select the drive and create the partition Setup tells me that I have 4 unknown drives with no disks in them.

 

Can any kind soul tell me how to install a new OS on a 9150 (with two 160gb SATA drives)

 

Richard