![]() Hmm, that sounds like it should be working, so I’m not really sure. The community has been terrific to view over and look forward to you coming through for me again! I have read about rEFInd but not really sure what that is or how to get it installed. I am not a techie by any stretch but would appreciate any advice anyone can provide. I have tried both USB ports upon booting and although the key is recognized in Finder on both, it won’t show up on the boot menu. The USB is fine, I have tried it on other Apple computers that I have yet to move over, the key is being recognized in the MBP Finder as “Generic Flash Drive” through Disk Utility so I know it’s not the key. I only see the HDD and the Recovery disk. However, we also have a MacBook Pro that I have tried everything I can to get it to load but when booting and holding down the alt/Option key, the USB is not recognized. My explanation is just one possible scenario.Recently moved my MacBook Air over to Ubuntu Mate and had absolutely no issues. The method used can depend on the model/year Mac you are using. Grub will then boot the live version of Ubuntu.īe aware, often a Linux ISO will offer more than one way to boot. You can select to boot from a live version of Ubuntu. Eventually, Grub will execute and often you are presented with a menu of boot options. If you select this icon, then the Mac Startup Manager will instruct the boot loader in the firmware on the logic board to boot from this file. If found, then a icon with the label EFI Boot will appear. The Mac startup manager looks for external drives with readable volumes containing the file \EFI\BOOT\BOOTX64.EFI. This instructs the Mac to boot to the Mac Startup Manager stored in the firmware on the logic board. You state in the comments that you would like a conceptual understanding of what is even happening when Mac "boots" from any external memory device. If etcher will not accept an SD card, then try the command line method. Select to boot from the icon labeled EFI Boot. Restart the Mac and hold down the option key. The simplest instructions would be to use Ubunutu's instruction for transferring to USB stick. ![]()
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December 2022
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