can't install from cd after 8.0 upgrade

9 May 2002

      Hi everyone
7.3 to 8.0 update no problems from the cd set. Everything worked. Now I try to 
install a new package and I get (e.g):

Please insert CD 2.
Could not mount the source medium.
mount: error while guessing filesystem type mount: you must specify the 
filesystem type 

The very same CD I'd just installed from. I can mount and read other CD's 
perfectly.

Any ideas anyone? Thanks, Steve.

steve