There seems to be quite a bit of discussion about this but I can't find a simple answer.
When I try to install grub2 I get this error:
# grub2-install /dev/sda Installing for i386-pc platform. grub2-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible. grub2-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. grub2-install: error: will not proceed with blocklists.
Here is the layout of /dev/sda:
Disk /dev/sda: 111.8 GiB, 120034123776 bytes, 234441648 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: 7ECE06D0-9F0C-44FF-BCFB-142283172CCA Device Start End Sectors Size Type /dev/sda1 2048 411647 409600 200M Linux filesystem (/boot) /dev/sda2 411648 4605951 4194304 2G Linux swap /dev/sda3 4605952 46548991 41943040 20G Linux filesystem (/) /dev/sda4 46548992 234441614 187892623 89.6G Linux LVM (/var)
Is there a simple way that I can get around this problem? I understand that I need to create a tiny partition at the beginning of the disk as a "BIOS Boot Partition". I suppose one option would be to move the swap to /dev/sda4 as a logical volume, and use /dev/sda2 as /boot.
Alternatively I could just go back to grub-legacy and not worry about that (is there really an advantage to upgrading to grub2 if it causes this much trouble?).