Traceback (most recent call last):
  File "/usr/share/checkbox/scripts/usb_test", line 141, in <module>
    sys.exit(main())
  File "/usr/share/checkbox/scripts/usb_test", line 123, in main
    child_hash = test.MD5HashFile(target)
  File "/usr/share/checkbox/scripts/usb_test", line 28, in MD5HashFile
    fh = open(path,'r')
IOError: [Errno 2] No such file or directory: '/cdrom/tmp0mto2z'