A while ago I posted about changing my W10 32 bit install which works flawlessly, to a W10 64 bit install.
My desktop PC is fully 64 bit compliant and before upgrading I ran a full retail version of W7 (I have both 32 and 64 bit versions).
Anyway, I backed up everything I wanted to keep to a spare usb hard drive, and put the install disk saved from an ISO 64 bit version of W10 into my DVD drive and re-booted.
The setup started and I got as far as the option to perform a repair or custom install, I choose 'custom' and a screen appeared showing my drive partitions and various options including 'format'.
That is where the problems started: I could not format my drive (format option did nothing), and got this error message: " Windows cannot be installed to this disk. The selected disk has an MBR partition table on EFI systems,Windows can only be installed to GPT disks."
Anyone got any idea what this means?
So I re-booted again and tried to start the already installed 32 bit version ..... It wouldn't start! Instead I got messages saying that the system was trying to repair Windows, this ultimately failed, and I haven't been able to start W10 since?
I also found out that no restore points have been saved, so can't go back to a working version.
Any ideas what I should do to correct this problem? Or better still how to install the 64 bit version?
Edited by Willabong, 08 September 2015 - 04:16 AM.