HT201581: Find your Mac's serial number in About This Mac or System Information
Learn about Find your Mac's serial number in About This Mac or System InformationQ: I Have a a older iMac 5,1 and I keep getting the message, Mac os x cannot be installed on this computer, I tried the iMac install ... I Have a a older iMac 5,1 and I keep getting the message, Mac os x cannot be installed on this computer, I tried the iMac install disk and I tried my macBook install disk and got the same message can anyone help. more
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Helpful answers
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Dec 22, 2013 3:15 PM in response to Macattack718by stedman1,What are you attempting to install?
What version of OS X is on the Mac now?
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Dec 22, 2013 6:12 PM in response to Macattack718by stedman1,Are you certain you have the original system disk? Does it have the number as below?
Original OS Mac OS X 10.4.7 (8K1106)
Does the computer have an operating system now?
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Dec 23, 2013 3:55 AM in response to Macattack718by roam,AFAIK there was no iMac 5,1. There was however a Macbook 5,1 whose original OS was Mac OS 10.5.5 and so would not install an earlier OS like 10.4. Grey coloured disks won't help you if the disks you are trying are disassociated from the hardware. You will need to go with the retail disks that have the graphic printed on them such as 10.4 or 10.5 shown below.

