kthreadd writes: GNU GRUB has been updated to version 1.99. Among the many improvements are support for two new filesystems, BtrFS and ZFS. For Linux users this means that it's now possible to move to BtrFS entirely and not use it only for non-bootable volumes.
A method of solution is perfect if we can forsee from the start,
and even prove, that following that method we shall attain our aim.