Installation good, but now cannot boot from install disk

Hi I installed leopard via upgrade and install all is working well apart from the occasional sound issue.
however when i try to boot from the leopard install disk I get a kernel panic saying that the computer is not recognized. If i boot from my original disk that came with my computer and run disk utility i get file errors. Should I repair these or will it ruin the leopard file system. And is the leopard install disk only suitable for intel macs.
ray

It sounds like the lens on your optical drive is dirty if you're not getting to the installation menu. Use a cleaning DVD or wrap a microfiber cloth around a credit card and carefully slide it in and out a few times.

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    { edited 2x }

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