I have a hard drive with 2 partitions, Windows 10 (Cand Windows 7(D. Win10 Disk Management shows that Win 10 contains (Boot, Page File, Crash Dump, Primary Partition) - Win 7 contains (System, Active, Primary Partition) I assume that when I boot up, Win 7 is in control. I now want to delete the Win7 partition, but Disk Management shows Delete Volume greyed out. If I use Easybcd to move the System files to drive C (Win10), I'm told that these files stay on D. How do I then delete the D partition? I have a tbi backup file for Win 7, which I intend to bring back to a new second HD which I am about to buy. Please advise. Many thanks, Errol.