Can't install Windows 8.1 on rMBP

[AndersBrohus]

Hi

I can't install Windows 8.1 on my rMBP, i use Yosemite...

I have used Windows 8.1 when i was on Mavericks...

I can only install via USB?

It says

"The selected disk has a MBR partition table. On EFI sistems, Windows can only be installed on GPT disks"

 

[maflynn]

Its possible that because you loaded the beta software it altered the partition table to a degree that its now having an issue.

I saw a number of posts in the Yosemite forum where people were complaining that it mess up the partitions.

With Yosemite, are you on a single partition now? Try to redo the Bootcamp assistant?