Can't update from 10.4 to 10.5

[Velmonk]

I have a 2.4GHz Intel Core 2 Duo Macbook Pro running 10.4.11
I want to upgrade to 10.5 but when I run the install disk, it says it "can't find os x 10.4 on this computer".
Since I most certainly DO have 10.4 on this computer, any ideas of what the issue might be or how to work around it?
Thanks

 

[Tallest Skil]

Is the disk Leopard retail?

 

[Velmonk]

it came with another macbook pro that was bought later.
it says 'cpu drop-in kit' on it.

 

[Tallest Skil]

Then it won't work. Sorry.

 

[Duff-Man]

Duff-Man says....this topic comes up again and again. The discs that come with other Apple computers are not meant to be installed anywhere, and you are not licensed to install them anywhere you please. If you want 10.5 on this Macbook Pro then you'll need to buy a properly licensed copy.....oh yeah!

 

[Velmonk]

Really? Is this new with leopard? I've done this exact thing a number of times with the 10.4 installer disk. In fact, I used this exact same disc to put Leopard on my Mac Mini with no issues.

 

[Tallest Skil]

Really? Is this new with leopard? I've done this exact thing a number of times with the 10.4 installer disk. In fact, I used this exact same disc to put Leopard on my Mac Mini with no issues.

Was it gray or did it have an X on it? The gray restore disks and drop-in upgrade disks are machine specific.

 

[Sky Blue]

Was it gray or did it have an X on it? The gray restore disks and drop-in upgrade disks are machine specific.

The CPU drop in disc looks like a Leopard retail disk, but says CPU Drop-In instead the OS version.

 

[Velmonk]

no it's black with the big X logo and graphic.
like i said, i used this exact disk to install on my mini, so it should theoretically work on my macbook pro, no?
also, wouldn't i get a different error msg than "can't find 10.4"?