ref: 2d6526b1a8b6b155c7e4b76efad124cbdd8d3c42 dir: /sys/src/9/boot/disk.proto/
$objtype bin 9660srv cfs cwfs64x disk cryptsetup edisk fdisk prep dossrv gefs hjfs rc lib local.rc 555 sys sys ../boot/local.rc bin fstype diskparts