md5sum a dvd?

[Dennis Kibbe]

On Wednesday 27 September 2006 21:11, Dazed_75 wrote:
> I downloaded ubuntu-6.06.1-dvd-i386.iso and verified the md5sum against
> that listed at the download site.  I then burned the DVD and got no errors.
>  One nice thing ubuntu has in the 6.06 release is a menu option (on booting
> the CD/DVDs) to verify the CD/DVD content.  When I tried this, it shows
> errors for some files.
>
> Surely there could be a problem with the burn, but I was wondering if there
> is any way to md5sum the DVD?  The only thing I could think of is to make a
> .iso from it and I do not know if that would even be expected to reproduce
> the original iso and match its sum.
>
> I realize I probably need to burn another DVD, but the question is still a
> valid one.

Look in the root directory of the DVD and you will find the file md5sum.txt 
which will let you verify the DVD with this command.

md5sum -c md5sum.txt

or 

md5sum -c md5sum.txt |grep FAILED

Since all you are interested in are files that don't check out.

If you get an error try reburning the DVD at a slower speed.

Dennisk