Question : Windows installed on wrong letter drive

My builder pretty well gutted an old case and installed a new motherboard, chip, power supply and video card. We kept the two existing data SATA HDDs and trashed the C drive which had the OS and program files. We installed a new 500 gig sata which was to be our new C drive. My builder started the new Windows XP SP2 install and left it with me while I was busy on doing graphics on another machine. When I we to finished the new OS installation, I discovered that Windows had named the new drive, not C, but G and had installed itself on that drive. While I know the computer will function normally that way, anything you install looks for the C drive and it is a PITA to have to continually work around. I want my OS on C. Is there a way to fix this without a reinstall. Annnnnnnnd, if we have to reinstall, how do we avoid the same problem? My builder has ERD commander ... could it be done with that. I am not an OS guy by any stretch of the imagination, I am a graphics guy who depends on computers to make a living. I probably know enough about this end of it to be dangerous ... at best
TNX,
Joe

Answer : Windows installed on wrong letter drive

Unfortunately, the drive letter is embedded in an image ... so an image/restore won't work.

It IS possible to change the system letter, but it's not recommended (too many potential issues if you miss anything in the registry).

The best path here is to simply re-install the OS.   Before you do so, disconnect your other drives and any USB card readers you may have in the system.   Then install the OS to your new drive -- when the XP installation CD shows the current partitions on the drive, delete them all;  then create a new partition for the install (this should show as C:) & do the installation.   After it's done, simply reconnect the other drives ... you can easily change those drive letters to whatever you'd like with Disk Management [the system drive is the only one you can't change through the management plugin].