Getting really frustrated with the Mac boot process. Has someone actually documented this properly, or do I really need to play a random guesswork game until I stumble upon something that works?
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Every article I find about this is some incomplete explanation, usually involving bless, but never actually going down a step by step list of what the Apple boot manager supports and doesn't support, and what the specific requirements are, and what other magic knobs exist.
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There are at least *some* reports that Macs know how to boot from BOOTx64.EFI, so that's going to be my next blind shooting attempt, which will involve converting this Linux install from MBR/BIOS to GPT/EFI in place. Wish me luck. Hope it's not for nothing.
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@winocm already answered my exact question already (and her answer is correct and works), so you can stop recommending random alternate bootloaders now, thanks :-)https://twitter.com/winocm/status/1282199345576566784 …Show this thread -
Now figuring out why boot gets stuck on penguins and no text, but that's not an EFI issue any more. Probably missing GPU firmware.
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I've done this successfully before but don't remember how (it was an ad-hoc "poke it until it works" process). the procedures I've seen tend to all involve rEFInd which adds yet another layer of indirection and complexity
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oh nvm just saw the much better and more complete answer
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I tried exactly that a few weeks ago. EFI partition ready but Grub stage 2 didn't load anymore. I couldn't reconfigure/reinstall grub as GPT/EFI then change MBR->GPT successfully. Please document it when you success.
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Dunno if you've already tried it, but there's a uefi boot menu called http://www.rodsbooks.com/refind/ That I've used instead of bootcamp, which you.really haven't needed since 2010...
Bootcamp creates a "hybrid" GPT/MBR partition, which causes all sorts of problemsThanks. Twitter will use this to make your timeline better. UndoUndo
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Not sure about linux, but with osx/win10 You boot to a uefi shell (from usb) and use the native efi commands to add /edit the boot paths That way both OSs think they're booting directly with no middle stage
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