Re: how to MD5 sum a DVD without copying it.
MD5 on the device file won't work. But this works: http://www.troubleshooters.com/linux/coasterless.htm On 11/02/2009 11:41, Geoffrey S. Mendelson wrote: Hi, I want to make an MD5 checksum of a DVD ROM to verify that it was burned properly. Is there a way to do this without making an ISO file from it? While I obivously have to read it, I don't want to do anything with the data other than calculate the checksum. Thanks, Geoff. ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: how to MD5 sum a DVD without copying it.
On Thu, Feb 12, 2009 at 11:47:30PM +0200, Michael Vasiliev wrote: MD5 on the device file won't work. But this works: http://www.troubleshooters.com/linux/coasterless.htm Thanks, I'll look at it. Well, it sort of worked. It pointed out any read errors, but it did give me a different MD5 sum. So I was able to tell that the copies I burned were identical. but not that they matched the original. For those that don't know, some CD and DVD drives have trouble writting a few specific bit patterns. Look up weak sectors for more information. Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel g...@mendelson.com N3OWJ/4X1GM ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
how to MD5 sum a DVD without copying it.
Hi, I want to make an MD5 checksum of a DVD ROM to verify that it was burned properly. Is there a way to do this without making an ISO file from it? While I obivously have to read it, I don't want to do anything with the data other than calculate the checksum. Thanks, Geoff. -- Geoffrey S. Mendelson, Jerusalem, Israel g...@mendelson.com N3OWJ/4X1GM ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: how to MD5 sum a DVD without copying it.
Hi Geoff,
On Wed, Feb 11, 2009 at 11:41:23AM +0200, Geoffrey S. Mendelson wrote:
I want to make an MD5 checksum of a DVD ROM to verify that it was burned
properly.
Is there a way to do this without making an ISO file from it?
While I obivously have to read it, I don't want to do anything with the
data other than calculate the checksum.
What about (assuming that you DVD is /dev/scd0):
md5sum /dev/scd0
baruch
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Re: how to MD5 sum a DVD without copying it.
Baruch Siach wrote: Hi Geoff, On Wed, Feb 11, 2009 at 11:41:23AM +0200, Geoffrey S. Mendelson wrote: I want to make an MD5 checksum of a DVD ROM to verify that it was burned properly. Is there a way to do this without making an ISO file from it? While I obivously have to read it, I don't want to do anything with the data other than calculate the checksum. What about (assuming that you DVD is /dev/scd0): md5sum /dev/scd0 baruch Just keep in mind that if the DVD is encrypted, the hardware may not let you access it. The simplest solution is to load a DVD player and start playing the DVD, and then run the above command. The DVD player will authenticate with the hardware, and after that it should allow you free access to the whole medium. Shachar ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
Re: how to MD5 sum a DVD without copying it.
Hi, You could make an ISO image to stdout and pipe it to md5sum. This still makes the image of course but it won't take up disc space. I've not actually tried this but it should be possible. Geoff. ___ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
