This is still an issue with grub 2.02.beta2-15 (on Manjaro OpenRC) - the fix mentioned above from Gentoo still works:
set GRUB_SAVEDEFAULT=false in /etc/default/grub & run update-grub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/736743 Title: environment block not implemented on btrfs To manage notifications about this bug go to: https://bugs.launchpad.net/grub/+bug/736743/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
