Stephen J Smoogen wrote:
If the installer is doing that then it usually means that the UEFI firmware is either a) not in BIOS compatibility mode b) does not respond in a way that Linux detects or c) the disk is larger than what BIOS compatibility mode will allow.
On the MBR disk, I already have a CentOS 6 partition which works well. I presume that means that there's no problem with the UEFI firmware, no?
(The disk has 240 GB; size isn't the problem.)