I'm trying to install Windows 7 x86 and x64 as well as Windows 8 x86 and x64 on a laptop, however, after installing the first three, it will not allow a forth primary partition to be created. When I installed Windows 7 x86 first, it created a system partition of 100MB as well as the primary partition. I then installed Win7 x64 and Win8 x86 each on their own primary partition.
I need to have all four installed for testing purposes and VMs will not suffice. I thought that 4 primary partitions could be created with MBR, however, there are only three listed as well as the 100MB system partition. Am I missing something?