Replacing Snow Leopard with Leopard in a new iMac

Hello people,
I intend to get a new iMac, but I'd like to replace the Snow Leopard OS with the Leopard of my present Mac (because it supports a number of my PPC applications). I presume I will simply have to do an "Erase and Install" of Snow Leopard and insert the Leopard CD. Am I right and will I run into any problems? Thanks in advance for your answers.
Gregory T.P.

Gregory T. P. wrote:
I presume I will simply have to do an "Erase and Install" of Snow Leopard and insert the Leopard CD. Am I right and will I run into any problems?
First of all, there is no "Erase and Install" option in the Snow Leopard installer, & even if there was, you would not want to use it -- what you want to do is erase the existing Snow Leopard installation & then install Leopard from a suitable Leopard installer DVD. You can do the erase step while booted from any disk that includes an OS that supports your Mac & its own copy of Disk Utility.
As others have mentioned, the problem is that your Mac may not be supported by any Leopard installer DVD disc. The last retail Leopard installer discs Apple offered only included version 10.5.6, so any Mac that requires a later version of that OS can't boot from them. Similarly, many Macs that shipped with Leopard installed after 10.5.6 was released included system-specific installer discs that work only with that model, so you could not use them either.

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