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Apple Computing Products:
macOS - Operating System
Bootable USB Issues OS X 10.11
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<blockquote data-quote="Rod" data-source="post: 1845139" data-attributes="member: 204485"><p>Just to eliminate one possibility, can you check that the USB is bootable on your MBP? </p><p>Just go to Startup Disk in System Prefs with the USB plugged in and see if it comes up in the options. If so you could try booting from it to be sure.</p><p>How are you attempting to boot the USB on the iMac, just holding the option key? </p><p>Here is an article on the process. Note that the USB needs to be using GUID mapping.</p><p><a href="https://www.isumsoft.com/it/how-to-boot-a-mac-from-a-bootable-usb-drive/" target="_blank">How to Boot Mac from a USB Drive? Fix Mac won't Boot from a USB Drive</a></p></blockquote><p></p>
[QUOTE="Rod, post: 1845139, member: 204485"] Just to eliminate one possibility, can you check that the USB is bootable on your MBP? Just go to Startup Disk in System Prefs with the USB plugged in and see if it comes up in the options. If so you could try booting from it to be sure. How are you attempting to boot the USB on the iMac, just holding the option key? Here is an article on the process. Note that the USB needs to be using GUID mapping. [url=https://www.isumsoft.com/it/how-to-boot-a-mac-from-a-bootable-usb-drive/]How to Boot Mac from a USB Drive? Fix Mac won't Boot from a USB Drive[/url] [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Bootable USB Issues OS X 10.11
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