It wasn't working!
@ -171,7 +171,7 @@ for base_version in base_versions:
vol = machfs.Volume()
vol.name = 'Test-' + base_version
vol.read_folder(TestBed, date=0xC0000000)
vol.read_folder(dest_dir, date=0xC0000000)
vol = vol.write(10 * 1024 * 1024)