Is SL OSX for Mac Pro different than for an Imac?

[3GEE]

Hey folks. I have an iMac with Intel Core 2 Duo running Leopard. I borrowed my buddy's Snow Leopard OSX installation disk, he has a Mac Pro. Are the operating systems different?

The installation disk is not loading for me. I just get a message saying that OSX 10.6 can not be installed on this computer.

Any thoughts on what is going on? I have plenty of space and the disk checks out ok on disk utility. I'm kind of stumped here. Thanks.
Don

 

[robbieduncan]

The grey restore DVD shipped with Macs are locked to that specific Mac model to prevent this sort of casual piracy.

 

[3GEE]

The grey restore DVD shipped with Macs are locked to that specific Mac model to prevent this sort of casual piracy.

Really? Didn't know this, thanks. I fully intend to buy Lion, but it is only going to be offerred through the App Store. I didn't want to buy Snow Leopard and then have to buy Lion also.