[G4] G4 won't read OS X upgrade CDs

[Robert A. Rosenberg]

At 13:53 -0700 on 07/21/2007, Mike Lemos wrote about Re: [G4] G4 
won't read OS X upgrade CDs:

>Hi robert,
>
>Thank you for your reply and the information provided. I have 
>actually tried these suggestions and the disk does show up as 
>bootable in the system preferences and I select it, restart and the 
>computer does the mac "chime" after which it ejects the disk. When I 
>try holding down the option key the DVD does not list. I also have 
>tried holding down the "C" key and the disk simply ejects although I 
>have had one other occurrence when doing this and that is it starts 
>up in OS 9 with desktop messages appearing that state that since I 
>have started up from the DVD certain functions will not be available.
>So after all this I was able to speak with tech support from the 
>people I purchased the disk from and their feelings are that the DVD 
>is a bad disk and they are going to replace it. (YAY!)
>So we'll see once I receive the new disk if my problem is solved. If 
>you would like, once I do (or if) I'll update you so that you can be 
>informed as to what ended up solving this issue. Let me know.
>
>Once again, I thank you for your help.
>Best.
>Mike Lemos

Yes please keep me updated. As you guessed I like to know the outcome 
of my attempts to help <g>.

BTW: Failure to show up in the option-key list implies that the disk 
has no System folder and is thus not bootable. You can check by just 
mounting and opening the DVD.