Can't mount burned Sarge - unknown type

[Jere McDevitt <jevansmc@speakeasy.net>]

I used jigdo and created the sarge-i386.1 iso.  Doing a loop back mount
on the ISO everything is fine.  I burned the CD using the command listed
in the FAQ:

  nice --18 cdrecord -v speed=24 dev=1,0,0 -data -pad sarge.iso

Everything seemed ok, but when I mounted the burned CD I get the
standard "unknow filesystem, bad block," etc error.  I notice that the
FAQ command line didn't include either the -J or the -r flag.  Should
these have been necessary or would the iso9660 base been sufficient?
I'll try later with a new blank CD (and drop the burn speed down), but I
was curious about not seeing either flag.  For the record, the burner
worked fine for a 450 meg file that I built to backup important
information and that CD mounted fine.  

Thanks!

Jere
-- 
The sound we heard wasn't the bubble bursting, it was the big bang.
	Rob Carter, CIO FedEx