修正後

# / was on /dev/sda2 during installation
UUID=6f1bbb77-c44c-4e33-9686-de20e121e09c / btrfs defaults,noatime,subvol=@ 0 0
# /home was on /dev/sda2 during installation
UUID=6f1bbb77-c44c-4e33-9686-de20e121e09c /home btrfs defaults,noatime,subvol=@home 0 0
# /boot/efi was on /dev/sda1 during installation
UUID=8C89-6ED3 /boot/efi vfat umask=0077 0 1
# swap was on /dev/sda3 during installation
UUID=8c4db4b1-849e-4ba6-ba65-05727e3ece8b none swap sw 0 0