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Apple Computing Products:
macOS - Operating System
iMac won't boot from USB but MBP will?
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<blockquote data-quote="Lifeisabeach" data-source="post: 1458072" data-attributes="member: 38864"><p>Did you update it to at least 10.6.3? If not, do so. Those model iMacs came with 10.6.3 pre-installed and won't boot anything earlier due to lack of drivers. You may as well just update all the way to 10.6.8.</p><p></p><p>If that doesn't work, and if you made the USB key with an OEM install disk that came with that MBP, then that may be the problem. The OEM disks lack drivers for anything but the specific Mac model they came with.</p></blockquote><p></p>
[QUOTE="Lifeisabeach, post: 1458072, member: 38864"] Did you update it to at least 10.6.3? If not, do so. Those model iMacs came with 10.6.3 pre-installed and won't boot anything earlier due to lack of drivers. You may as well just update all the way to 10.6.8. If that doesn't work, and if you made the USB key with an OEM install disk that came with that MBP, then that may be the problem. The OEM disks lack drivers for anything but the specific Mac model they came with. [/QUOTE]
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Apple Computing Products:
macOS - Operating System
iMac won't boot from USB but MBP will?
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