<html><body><div>I upgraded from xubuntu 13.04/10 ?? with: <code>do-release-upgrade at the end it said if failed installing grub now when I boot it fails to the grub-rescue prompt. I've booted from live dvd and mounted thus: sudo mount /dev/sda5 /mnt I see this: :/mnt$ l @/ @apt-snapshot-release-upgrade-saucy-2013-11-25_14:41:27/ @apt-snapshot-release-upgrade-trusty-2015-01-06_14:26:30/ @home/ I realized that I had installed with btfrs and get this when trying to install grub (in several locations): sudo grub-install --root-directory=/mnt/ /dev/sda Installing for i386-pc platform. grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible. grub-install: error: filesystem `btrfs' doesn't support blocklists. ubuntu@ubuntu:/mnt/@$ sudo grub-install --root-directory=/mnt/@/ /dev/sda Installing for i386-pc platform. grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible. grub-install: error: filesystem `btrfs' doesn't support blocklists. ubuntu@ubuntu:/mnt/@$ l home ubuntu@ubuntu:/mnt/@$ l bin/ cdrom/ etc/ initrd.img@ lib/ media/ opt/ root/ sbin/ sys/ usr/ vmlinuz@ boot/ dev/ home/ initrd.img.old@ lib64/ mnt/ proc/ run/ srv/ tmp/ var/ vmlinuz.old@ ubuntu@ubuntu:/mnt$ l boot grub/ ubuntu@ubuntu:/mnt$ sudo grub-install --root-directory=/mnt/grub/ /dev/sda Installing for i386-pc platform. grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible. grub-install: error: filesystem `btrfs' doesn't support blocklists. Is there a way I can fix this. Looking at some discussion online, this seems to be a common issue, but I didn't see a fix for this with btfrs setup. Any idea how to get grub installed? Thanks, -wes </code></div></body></html>