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Apple Computing Products:
macOS - Notebook Hardware
Help - Mac Pro Start up issues
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<blockquote data-quote="harryb2448" data-source="post: 1513954" data-attributes="member: 42497"><p>You do need that disk to boot from and run Repair Disk. Sounds like your hard drive may be shot. Are you using a Windows keyboard with Alt? On a Mac keyboard it is Command, Option P and R keys all at the same time after the chime and keep held down until after the third chime.</p></blockquote><p></p>
[QUOTE="harryb2448, post: 1513954, member: 42497"] You do need that disk to boot from and run Repair Disk. Sounds like your hard drive may be shot. Are you using a Windows keyboard with Alt? On a Mac keyboard it is Command, Option P and R keys all at the same time after the chime and keep held down until after the third chime. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
Help - Mac Pro Start up issues
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