I have a dell precision 490 dual core set up. It has twin 130g drives, and I added the 160g drive from my old xp machine. It is in slot 2 for sata drives. I went to F2 and turned on the power to it and then when I go to computer management the drive is there and partitioned into 3 segments. The first is only about 30 meg, the second i am sure has the window xp and all my folders are at, the third is a 3.5g section. The 3.5 g segment is formatable and i can assign it a letter but it wont let me assign a letter to either of the first two sections. The menu showes up but all that is highlighted in blck is delete volume and I can't do that else I will lose all the pictures music ect. Other than taking apart my tera drive and dropping this xp drive into it ( to try to gain access via usb port) into it how can I assign a drive letter to the segment so i can access my folders. After that is done I would have no problem formating the drive to make it one partition.