Trying to reinstall Windows 7 but I get a error that says "the selected drive has a MBR partition table. On EFI systems. Windows can only be installed to gtp disks"
select the desired partition then click "delete" button with the red 'x' symbol next to it.
it will leave you with empty uninitialized disk space, select it and click the "new" button with the orange star next to it. then click next and it will proceed with installation