![]() You'll be brought into an EFI text-mode GUI. I was able to fix the UEFI problems as follows (credit to the VirtualBox forum): After manually directing EFI to boot into macOS for the first time, macOS automatically fixed up the boot partition, and subsequent boots worked properly. In my case, after installing macOS into a virtual machine according to these instructions (running the macOS installer from an ISO image downloaded from Apple), on first boot, the boot partition was present, but unconfigured (probably no boot image installed). By now you may have surmised boot.efi is an EFI standard filename that lives at an EFI standard path in a disk partition, and it contains OS-specific boot firmware (e.g., Windows, Linux, etc. Ultimately, the objective is provide a boot partition that contains a macOS boot.efi. Your immediate objective is to help EFI locate and execute OS-specific boot firmware. However, assuming you have a macOS recovery partition on that disk, it should contain a copy of boot.efi (macOS-specific boot firmware) that you can boot into the OS with. As such, I am asking here for more things to try out before sending it out to the service center.UEFI requires intervention, because the EFI firmware on the Mac's motherboard can’t find valid OS-specific EFI boot firmware in the standard location on disk. ![]() I am almost at the end of the list of all things to try. I also tried unloading and even deleting the Apple HIDKeyboard, TopCase and MultitouchDriver kexts, thinking maybe the driver isn't able to communicate with the built-in keyboard/touchbar/touchpad properly, but that didn't help either. I have already tried NVRAM reset, SMC reset, DFU firmware revive, installing Mojave, Big Sur. I am not sure if that's the reason for it not booting up, but just putting it there. Then I clicked Continue, and I try clicking on the button to the right of the left shift key, i.e., Z: I know because I tried booting another working MacBook to safe mode and I don't see that button there.īTW I got the above screen on the first safe mode boot as well. The "Change keyboard type." shouldn't ideally be there. If I go to keyboard settings in safe mode, I see the following screen: Also while in safe mode, I noticed that it can't properly recognize my in-built keyboard, even though all keys work just fine on trying. However, it boots just fine in safe mode. So now I did a Disk Utility "Restore" via target disk mode from the other MacBook, but on booting, I was getting APFS PreBoot volume not found error, I followed this guide to manually create that volume: and now that the SSD was fixed, I clean reinstalled macOS Catalina via Internet recovery.īut after installation, it seems to be stuck at the loading screen with the Apple logo and the loading bar at around 60%. Internet recovery now downloaded fine, but now I got "Downloading installer information to the target volume failed" on trying to install the OS. So I booted it in Target Disk mode and wiped the SSD clean from another MacBook. But because of this, I wasn't able to install macOS back as Internet Recovery wasn't able to download. I had installed Bootcamp on my MacBook and to give it more space, I had deleted macOS recovery and system partitions from Easus Partition Manager on Windows.
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