device-major 構文の例（i386 の場合）

device-major   cn              char 0
device-major   ctty            char 1
device-major   mm              char 2
device-major   wd              char 3   block 0   wd
device-major   sw              char 4   block 1
device-major   pts             char 5             pty
device-major   ptc             char 6             pty
device-major   log             char 7
device-major   com             char 8             com
device-major   fd              char 9   block 2   fdc
device-major   wt              char 10  block 3   wt
device-major   scd             char 11  block 15  scd
device-major   pc              char 12            pc
device-major   sd              char 13  block 4   sd
device-major   st              char 14  block 5   st
device-major   cd              char 15  block 6   cd
device-major   lpt             char 16            lpt
device-major   ch              char 17            ch
device-major   ccd             char 18  block 16  ccd
device-major   ss              char 19            ss
device-major   uk              char 20            uk
device-major   apm             char 21            apm
device-major   filedesc        char 22
device-major   bpf             char 23            bpfilter
device-major   md              char 24  block 17  md

device-major   joy             char 26            joy
device-major   spkr            char 27            spkr
device-major   lkm             char 28            lkm