show_progress(0.1, 0);
assert(package_extract_file("misc.img", "/tmp/misc.img"),
       write_raw_image("/tmp/misc.img", "misc"),
       delete("/tmp/misc.img"));
assert(package_extract_file("persist.img", "/tmp/persist.img"),
       write_raw_image("/tmp/persist.img", "persist"),
       delete("/tmp/persist.img"));
show_progress(0.2, 10);