Checking MD5SUM from CDROM copy

[Ossama Khayaat]

> Hi,
> I searched the archives for an article about verifying a copied .iso
> image.
> I found what I need but the problem is that when I issue the command,
as
> follows, what is the number specified after count= ?
> [SNIP from thread: How to check *CDROM* correctness?]
> [http://www.redhat.com/archives/shrike-list/2003-April/msg00637.html]
> # dd if=/dev/cdrom bs=2048 count=326656 | md5sum
> 1+0 records in
> 1+0 records out
> c99a74c555371a433d121f551d6c6398  -

Sorry, I checked the man page and it's number of blocks, which you can
get if you use:
# du /mnt/cdrom -s

Ossama