Accidently installed Windows 7 on the D Recovery drive

When prompted for installation of W7, I chose the highlighted option which was the D drive (Duh!).

• I don't care about any programs or data on the system. I am wiping it clean to pass along to my daughter as a Christmas present.
• The D drive acts as primary and is the only OS installation now.
• I have plenty of space on the C drive.
• The D drive is too full to download any programs or .exe files to assist with moving the installation to C.
• I don't know how to move space from the C drive to the D drive.
• Windows boots up w/out issue.
• I am unable to install W7 on C because the registration key is already in use.
• The D drive will not allow me to uninstall Windows 7.

With those factors in mind, would I be able to highlight and delete all files in the D drive, then install W7 to the C drive? Or, can you think of a simple and elegant way to back out of this quandary?

I appreciate your assistance and guidance.

Thanks!
Tammy

Thanks so much for your response.

Yes I would redo it but this time correctly boot the Win7 installation media and delete all partitions using the Drive Options in Steps 7 and 8 of Clean Install Windows 7
to create a new installation partition for Win7.

Other tips here for getting and keeping a perfect Clean Reinstall - Factory OEM Windows 7