question about burning and then reading (dd) to confirm sha256sum

[Robert Nichols]

On 04/01/2015 02:18 PM, jd1008 wrote:
> After burning 3 DVD's, and reading them back to compute sha256sum.
> all three of them generated these error messages during readback,
> and all 3 messages show the error was past the 4gb offset.

The DVDs will have some zero padding appended, and that will affect
the SHA256 sums. You have to be careful not to read more bytes from
the DVD than there are in the original ISO file.

-- 
Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.