ref: e7a3cd0fd0f41e03f7b861d5e092f8a4a51f5fa8 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