ref: 3a4a6d2dd2a3dc812ad31a2c1ee663a7e7ed0bfa dir: /sys/src/cmd/aux/flashfs/mkit/
#!/bin/rc echo 0 0 0 0 0 16 16384 > fs.filectl 8.mkflashfs -n 16 -z 16384 -f fs.file