dd errors with certain DVDs

[Tony Nelson]

At 10:44 AM +1000 3/28/07, Cameron Simpson wrote:
>On 27Mar2007 16:54, Tony Nelson <tonynelson at georgeanelson.com> wrote:
>| dd if=/dev/dvd bs=2048 count=$(isosize -d 2048 /dev/dvd) | sha1sum
>
>isosize is a binary! Ugh. The man page doesn't say: does it do anything
>more than my (fixed) "ls|awk" incantation?

Yes.  It looks inside the .iso header for the size.  It works for .isos on
disk as well as on media.
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