Can't boot from Core 2 CD

[bscott at ntisys.com]

On Tue, 17 Aug 2004, at 10:15am, steveo at syslang.net wrote:
> The file i downloaded was FC2-i386-disc1.iso and then I sucked it back out
> of the cd using
>   
> dd if=/dev/cdrom of=FC2-i386-disc1B.iso

  In my experience, that does not work right.  Use

	readcd dev=/dev/sgcdrom f=cdimage.iso

instead (where "/dev/sgcdrom" is the SCSI generic device for your CD-ROM
drive).

  Also, use the "-dao" switch to "cdrecord" when recording in the first 
place.  Someone else on this list gave me that tip, and it does appear to 
create a more "exact" burn of the original image.

  Of course, IME, when I had trouble doing a read-and-compare of CDs I 
burned, the discs generally still worked fine.  So I'm not sure how much it 
matters.  But it certainly can't hurt.

  Another compare trick I use is:

	mount -o loop -r /path/to/original/cdimage.iso /mnt/image
	diff -qr /mnt/image /mnt/cdrom

That will at least verify everything in the regular filesystem is a match.  
Of course, your problem appears to be with the boot catalog, which is
"outside" the regular filesystem.  :-/

-- 
Ben Scott <bscott at ntisys.com>
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