[Cialug] rip an ISO

[Renegade Muskrat]

At 05:24 PM 11/6/2005 -0600, you wrote:
 >On Sun, Nov 06, 2005 at 04:45:55PM -0600, Renegade Muskrat wrote:
 >> Awhile back i downloaded a Debian DVD and burned it. Now i'd like 
to
 >> make another copy. However, i've since deleted the original ISO. 
When
 >i
 >> use dd to rip the burned DVD to an ISO, the MD5 sum is different 
from
 >
 >> the original ISO that i downloaded. I don't believe the disc is
 >> corrupt, just the ISO that is ripped is different from the one that 
i
 >
 >> downloaded. I've noticed this in the past with CDs as well.
 >>
 >> Is there a way to rip a previously burned CD or DVD such that the 
ISO
 >
 >> is identical to the ISO that was used to burn the disc originally?
 >>                                                -- Dan
 >
 >dd if=/dev/hdc of=debian.iso

Doing that creates an ISO, but it is not identical (according to MD5) 
to the one used to burn the disc with (even if the disc is good). Is 
there a different way to rip an ISO that results in an identical file 
to the original?
                                                -- Dan
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