Re: MDK9.1 CD1 - no good burn yet

["Ken Keefe" <kjkeefe@siu.edu>]

I'm not familiar with checksumming of CD's and so forth, but I was able to
install MDK 9.1 on my server and my laptop. It seems to have gone smoothly,
I'm really hoping the new WiFi support will work on my laptop. I hope that
helps. If you tell me how to run the tests, I'll try it on my machines.
Unfortunately, it doesn't look like getting my WiFi working is going to be a
simple task...

-Ken

-----Original Message-----
From: silug-discuss-owner@silug.org [mailto:silug-discuss-owner@silug.org]
On Behalf Of mike808@users.sourceforge.net
Sent: Saturday, March 29, 2003 2:37 AM
To: discuss@sluug.org; silug-discuss@silug.org; luci-discuss@luci.org
Subject: MDK9.1 CD1 - no good burn yet

The MDK 9.1 CD1 is 682164224 bytes (i.e. 333088 2K blocks)
and has an MD5 checksum of 6f1581974e12420fef87868ed6caa31f.

I've burned it at several speeds with some "Precision" brand (BestBuy)
CDRs that claim to be 40x speed and to hold 700MB.

When I've burned it at 24x, 12x, 8x, and 4x, I get 333088 blocks written
reported by KonCD (with Burn-Proof enabled).

But, when I read back the CD and calculate the md5sum, I don't get back
the md5sum of the ISO.

Has anyone else been able to write a verified CD1 for the new MDK 9.1?

If the last 24 blocks (48K) are junk, why did they make the ISO that big
to begin with?

Mike808/

Here's the details...
> 24x burn (default block size and read until error)
> dd: reading `/dev/cdrom': Input/output error
> dd if=/dev/cdrom | md5sum
> 1332248+0 records in
> 1332248+0 records out
> 2b18c29cea96d28ad15d2b5b68e88516  -
>
> 16x burn
> dd if=/dev/cdrom bs=2048 count=333088 | md5sum
> dd: reading `/dev/cdrom': Input/output error
> 333062+0 records in
> 333062+0 records out
> 2b18c29cea96d28ad15d2b5b68e88516  -
> 
> # 8x burn (tried sample Lite-ON 700MB CDR media)
> dd if=/dev/cdrom bs=2048 count=333088 | md5sum
> dd: reading `/dev/cdrom': Input/output error
> 327304+0 records in
> 327304+0 records out
> 1c4e08e11f4d0fe76b4e3f540e3457d5  -
> 
> # 4x burn
> dd if=/dev/cdrom bs=2048 count=333088 | md5sum
> dd: reading `/dev/cdrom': Input/output error
> 333062+0 records in
> 333062+0 records out
> 2b18c29cea96d28ad15d2b5b68e88516  -


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