BTRFS-SELECT-SUPER(8) Btrfs Manual BTRFS-SELECT-SUPER(8) NAME btrfs-select-super - overwrite superblock with a backup SYNOPSIS btrfs-select-super -s number dev DESCRIPTION btrfs-select-super destructively overwrites all copies of the superblock with a specified copy. This helps with certain cases of damage, especially when barriers were disabled during a power failure. You can find a valid copy of the superblock with btrfs check -s. The filesystem specified by dev must not be mounted. OPTIONS -s|--super <superblock> use <superblock>th superblock copy, valid values are 0 up to 2 if the respective superblock offset is within the filesystem SEE ALSO btrfsck check(8) Btrfs v4.4.1 11/05/2016 BTRFS-SELECT-SUPER(8)