Block id
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get the block id
# blkid /dev/sda1
change fstab to mount by uuid instead. e.g.
UUID="b8f0a58b-6dce-4d8a-89f0-d82bb2edcd01" /nfs ext4 defaults 0 2 UUID="6af41e26-7634-4bb1-9ea0-902401b45375" none swap defaults 0 0