ref: 2d555bc3fcffc27ed2c1e9b40a5a8eef63c0d5da 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