Here is the quick and dirty Old 120 GB C:. XP/NIS formated twice. In a Dell 4550. It is bloated with Norton and other stuff. Only use 40GB of space. Decided to get new HD, do clean install, and use for boot disk, wipe my old C: and use solely for backups and images. I plug in new 160 GB HD, desgnated as D:, do XP install from scratch. Went with NOD32/ZA/TI10. Get everything the way I want and copy my files over from C:. Can boot either HD. Decide everything is good on D:, go to format C:, but XP won't let me. Change jumpers, try a few things, but my BIOS will only boot from C: Will it only boot from C: cause that is the only bootable HD? C: has a FAT32 partition on it, but my D: does not. I don't know if that is important or not. I don't get it. I formated and installed from scratch to my D: Why won't my BIOS boot from it when I set it as master? Now I am confused what to do. I would rather not do a complete install again. I have a pristine updated install on D:. I need to move that somewhere. Wipe my D:, remove both HDs and install my new one as C: and move my clean install back to it. Is that possible? What have I missed? Am I making this too complicated? I have the Seagate disk wizard software too, but didn't use it to set up my new drive as my boot drive. Can I just use that? Any help is most appriciated.