I had my whole story written here; but when I went to post, Neowin 404d. I'm far too aggravated to retype it all...
Basically, I deleted a partition and expanded Mulsivaas partition. I want to delete Windows 7 partition as well, but cannot because it is set as both Active and System. When I set Mulsivaas as Active, expecting it to drop the Windows 7 Active status, I got an MBR boot error (I couldn't find the MBR files I needed to move). I used the Windows 8 disc and did the auto boot fix. It set both Windows 7 and Mulsivaas as Active, but made Windows 7 "System" and Mulsivaas "Boot." Mulsivaas is definitely the primary boot drive, because I get the Windows 8 OS selector when I boot.
I used the cmd on the disc to override delete Windows 7 partition, but got the same MBR error when booting. I used the auto boot fix which simply brought back the Windows 7 partition.
So what do I do to delete this pesky Windows 7 partition?
P.S. If it helps: I can never reboot my computer. Every time I try to reboot manually or restart after an installation, my system hangs during the spinning dots of Win8 startup. At this point I have to manually shut down and turn back on. I always have to do this every time.
Best Answer +Karl L. , 27 June 2013 - 20:09
Have you considered using GParted Live to delete the partition? GParted is much more powerful than the Windows partition manager, and it will not have a conflict with the partition flags because you are using it from a live disc.
Windows not allowing you to properly reboot your computer sounds like another issue entirely. Try rebooting from Windows into the GParted Live disc, and vise-versa. If that does not work you likely have a hardware problem; if it does I would suspect something with your Windows installation - maybe the chipset drivers. In the former case the verbose output GParted Live will give you when booting could help narrow down the issue. In the latter case I recommend that you check your Windows event logs for errors and maybe warnings for the same purpose.Go to the full post