My system has UEFI, and I want to install both Windows 7 and 8 on a large drive formatted for GPT (I want to also install a few other operating systems, and I need more than 7 partitions).
After installing Windows 7, when I try to install Windows 8, I can't select the partition for installation and I get the message "Windows cannot be installed to this disk. The selected disk is of the GPT partition style."
As far as I understand, I can install one Windows system on each drive, because Windows need to create an EFI boot partition (and an MSR, whatever that is). A second installation will refuse to install if there is already an EFI boot partition.
Is there a way to work around that - except disabling UEFI and using MBR for the drive?