Deleting Windows 7 partition from Windows 7/8 Dual Boot

I recently installed Windows 8 on a relative's PC, since it was eligible for the $14.99 upgrade, being unsure of whether my relative would like W8 I decided to dual boot it alongside W7.  My relative loved W8, however, and is now using it as her primary OS.  My problem is, how do I safely get rid of the Windows 7 partition? Trying to delete it causes the laptop to be unable to boot since it seems the boot files are still on the W7 partition.  Is there a way to make the W8 the 'boot' partition, perhaps by creating/copying the boot files somehow?
Answer
Answer

Solved it, here's how I fixed it in case someone else runs into a similar problem:

1. Installed and ran EasyBCD on Windows 8

2. Opened the BCD Backup/Repair, and set C: as the default boot drive

3. Used Minitool Partition to delete the partition in which Win 7 was installed and expand the Win 8 partition over the unallocated space

4. Rebooted, the Dual Boot screen showed up, even though there's only one OS installed, so reopened EasyBCD on Windows 8 and deleted the Windows 7 entry from the Dual Boot menu

Note that it is a VERY good idea to keep a Windows 8 install disc/USB at hand at all times during this procedure, in case something goes wrong.

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Last updated March 24, 2018 Views 1,581 Applies to: