Alright, I've got a new PC here at work and WinXP is being a bitch. I've got 2 hard drives: 1-40 GB & 1 200-GB. I want XP to be installed on the 40 GB (C: ) and the 200 GB drive (D: ) to be open for storage. Initially when I booted to the WinXP CD it wouldn't let me install XP on the 40 GB for some reason. It wouldn't give me the option to format it. So I installed XP to the 200GB drive. Once I was in XP, I formatted the 40GB drive with no problems. Then I booted to the XP CD again and installed XP to the 40GB drive. Now when I boot up it gives me the option to boot to either one of the XP installations. Both drives have XP installed on them but the 40GB is now D: and the 200GB is C:........... Computer Management >> Storage >> Disk Management Code: Volume Layout Type File System Status Capacity Free Space C: Partition Basic NTFS Healthy (System) 186.30GB 183.29GB D: Partition Basic NTFS Heathly (Boot) 37.26GB 34.71GB When I boot to D: it won't allow me to format C: What I need to do is have the 40GB be the C: drive and the 200GB to be the D: drive. How can I do this?? By the way this is on a Intel D865PERL motherboard and I'm using SATA150, if that helps any.