Removing old windows from disk?
I have Windows 8 Release Candidate installed on my d:\ partition and RTM installed on the c:\ partition. I want to get rid of the RC on d. I also want the bootloader to stop prompting me about which windows 8 to start. How do I do this?
Just remove the extra OS from the boot loader as described here. Then you can just delete the files on D: or format it.
Remove the D:\ drive. Here are instructions to help you:
http://www.eightforums.com/installation-setup/5857-delete-windows-8-cp-partition.html#post86501
I personally think the last post is the best solution.