ref: 2e1cd4eea3163cc033d0eca6ba5e5fd4efc4a5f2 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