ez : how to switch c: hdd for d: ?

[MarcasBakers]

I didn't find my answer on the forum Anyway, I would like to switch my d:/ which contains my OS with my c:/ (backup). Both are WesternDigital 80gb, master drive (D:/ in windowsXP) and slave (C:/ in winXP) are set in the right order into my BIOS. Do I have to reinstall both harddrives or will I have to reinstall my OS so windows file are redirected to the right disc?
I have the same problem on my other computer but it's e:/ and f:/, I don't have any C: nor D:.

 

[grafixmonkey]

First off, I'm not sure how windows XP and your installed programs will react to this change. Some things might break and require reinstalling.

Right click on My Computer. Click on 'Manage'.
Click on Disk Management on the left. (it's under Storage.)

On the right you'll see a list of physical drives that are mounted in windows, and their partitioned spaces that read as logical drives.

Right click on a partitioned space (not a physical drive) and choose 'Change Drive Letter and Paths'. Then you should be able to swap things around.