This code is for testing the Rockbox fat code on a dummy drive image file. Dummy image ----------- Here's how to create a 1 gig dummy drive image in linux: # dd if=/dev/hda of=disk.img bs=1M count=1024 You can then format disk.img as a FAT32 partition: # mkdosfs -F 32 disk.img To mount the image, your linux kernel must include the loopback device: # mount -o loop disk.img /mnt/image Now copy some test data to the disk, umount it and start testing. The test script mounts the disk image in order to initialize it will a number of dummy files. Since users are no longer allowed to mount loopback devices, you can either run the test script as root (not recommended) or add a line to your fstab file: /path/to/disk.img /mnt/dummy vfat loop,users,noauto 0 0 Test code --------- The files in this dir build the 'fat' program. It will read 'disk.img' and treat is as a real disk, thanks to the ata-sim.c module. Modify the main.c source code to make it perform the tests you want.