System drive letter change help

[Petemj23]

Hello everyone. I hope someone can help. I just upgraded my "guts" (mobo, ram, cpu) and am trying to get all set up. I installed windows XP on a brand new hard drive on a newly created partition. On the setup screen, it says
C: Partition1 [NTFS]

I left some unpartitioned space on the new drive for a later win xp 64bit version install and I also have another HD that is listed as D: Partition1.

After the install, my system disk drive letter was F: and my other HD letter was E:

I go to disk management and I can change my second HD letter but it won't let me change my system drive letter back to C:

How do I get my system drive letter back to C: ????

Thanks for any help!

 

[mikrev007]

The partition where Windows is installed cannot be changed easily (a lot of driveletter references needs to be changed). Normally a reinstall is prefered