1 # Demo of reading and writing to disk.
 2 #
 3 # Steps for trying it out:
 4 #   1. Translate this example into a disk image code.img.
 5 #       ./translate ex9.mu
 6 #   2. Build a second disk image data.img containing some text.
 7 #       dd if=/dev/zero of=data.img count=20160
 8 #       echo 'abc def ghi' |dd of=data.img conv=notrunc
 9 #   3. Familiarize yourself with how the data disk looks within xxd:
10 #       xxd data.img |head
11 #   4. Run in an emulator, either Qemu or Bochs.
12 #       qemu-system-i386 -hda code.img -hdb data.img
13 #       bochs -f bochsrc.2disks
14 #   5. Exit the emulator.
15 #   6. Notice that the data disk now contains the word count of the original text.
16 #       xxd data.img |head