ref: d8bcd6c8e4a31a407aebcc3e60cdf3630b0b3c5f 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