Why do I get software cannot be installed message?

Question

iBook G4 12" 1.33 GHz

Model A1133

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I try to install mac os x 10.5.7 dvd its a grey disc. My ibook is a 12 inch but the disc says 15 inch installation disc.

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score 2 · Answer 1 · 2016-04-13T20:07:59-07:00

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The gray disks are machine specific disks and will only install on a specific series of Macs.

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