November 6th, 2011 at 6:03PM
  • $ dd if=/dev/scd0 of=cdimage.iso # NO!
  • $ cat /dev/scd0 > cdimage.iso # NO!
  • As you are probably thinking, the problem with the two commands above, is that they provide no error checking while building the image.
  • [..]Thankfully, there is a better way, one which handles the checksum while doing the copy. You want to use readom(1) (“read optical media”) from the wodim(1) (“write optical disk media”) package. Consider the following command:
  • $ readom dev=/dev/scd0 f=cdimage.iso # YES!
Source: pthree.org
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