Difference between "Upgrade DVD" and "CPU Drop-in DVD"?

[Topher15]

The £5 upgrade DVD is labeled "Upgrade DVD" while the DVD which was bundled with my MacBook is labelled "CPU Drop-in DVD". Is there a difference?

 

[Tallest Skil]

The one you paid for cost £5.

 

[Topher15]

The one you paid for cost £5.

No ___ Sherlock! 🙄

Is there an actual difference with the discs? Why the different label?

 

[Tallest Skil]

One was an upgrade and one was a drop-in. The words on the physical disk are the only difference. Except for the shipped-with boot disk versions of Leopard, there is absolutely no difference from one version to the next.

And the only difference on the shipped-with ones is the coding that tells it what Mac it came with so that it can't be used with any other. For example, so that you cannot use a MacBook's restore disk to install Leopard on a Mac Pro.