If the installer started then you don't have a master/slave issue. If  
that was the case then you wouldn't have been able to boot off the CD/ 
DVD at all.

It sounds like you have bad media or the drive your trying to read  
from can't accurately read the burned disk. This could be from using  
cheap CDs or DVDs. It might also be because you burned the CD/DVD at a  
speed not compatible with the drive your trying to read it in. Try  
burning your media at the lowest speed possible for the best possible  
compatibility.
---
Jon M. Hanson (N7ZVJ)
Weblog: http://the-hansons-az.net/wordpress/
Homepage: http://the-hansons-az.net/
Jabber IM: jon@the-hansons-az.net



On Nov 4, 2008, at 9:33 PM, Mike Hoy wrote:

> Hi,
>
> Just built a new computer and having some minor problems. First time
> building one so I'm not surprised that something went wrong. It boots
> up to cmos fine and shows a dvd rom and a hdd. So I install Ubuntu and
> it says 'unable to read from disk' even though the installer started
> up and everything. I chose 'Install Ubuntu'. Tried a knoppix cd and
> got a similar error, it dropped me to a basic shell and did nothing
> after that. I rebooted and went into CMOS and it shows no
> Master/Slaver selected. How do you do that? I don't see any jumpers to
> set. I remember having to set jumpers a long time ago when I actually
> did some work on hardware. Any suggestions as to what might be causing
> this?
>
> -- 
> Mike Hoy
> http://www.saguarosports.com/
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