Red Hat Bugzilla – Bug 807349
BIOS boot partition should not be used with combined GPT and EFI
Last modified: 2013-05-07 19:08:23 EDT
Description of problem: The BIOS boot partition (code EF02) should not be created nor used (for grub2 image) when booting with combined GPT and (U)EFI. Instead, the file /EFI/redhat/grub.efi on the EFI System Partition contains everything that is needed. Creating a BIOS boot partition wastes 1 of the 15 available partitions. (15 partitions is a limitation of Linux, not the GPT.)
Version-Release number of selected component (if applicable):
How reproducible: every time
Steps to Reproduce:
1. During install, then partition a GPT disk on a (U)EFI box.
Actual results: The installer demands (and creates if necessary) a BIOS boot partition, code EF02 (revealed by gdisk), size 1 MiB, and puts an image of grub2 on it, and uses that image for booting.
Expected results: Do not demand or create a BIOS boot partition. Instead use the /EFI/redhat/grub.efi on the EFI System Partition (code EF00).