Sudo cp -R /Volumes/RESCUE/EFI/boot/ /Volumes/efi/EFI/grub Sudo cp -R /Volumes/RESCUE/boot/ /Volumes/efi/boot Sudo mount -t msdos /dev/disk0s1 /Volumes/efi In this step we will make the macOS boot without the thumb drive.Īfter booting macOS with your thumb drive and with it still plugged, open the terminal and run the following commands (I will assume your thumb drive name is RESCUE, if not, replace RESCUE with your thumb drive name): cd /Volumes You can now boot from the thumb drive without having to change the uuids every time. On your thumb drive, open the file at boot/grub/grub.cfg with any text editor and for each menu entry, replace YOUR_UUID with the uuid you got on the step 3.5. If you haven't added multiple menu entries, skip this step. Change the UUIDs on grub.cfg (Multiple menu entries only) Replace YOUR_UUID with the uuid of your partition. Press e to edit one macOS menu entry you want to boot. Take note of the UUIDs for your macOS partitions. If you have multiple menu entries, when grub appears press c to open the grub console and run the command: ls -lĪ list of partitions should appear. If you haven't added multiple menu entries in the last step, you just need to press enter when grub appears and go straight to step 4. Search -no-floppy -fs-uuid -set=root YOUR_UUIDīoot your mac and when you hear the chimes, press and hold Option (alt) and then choose your thumb drive. If you have more than one macOS installed, add multiple menu entries like this (you can change the name): set timeout=10 If you are using High Sierra with APFS change it to: set timeout=10 Search -set=root -file /System/Library/CoreServices/boot.efiĬhainloader /System/Library/CoreServices/boot.efi On your thumb drive, open the file at boot/grub/grub.cfg with any text editor and change it to: set timeout=10 Then run the following commands to mount and open the iso disk (in my case /dev/disk2) mkdir /tmp/ubuntuįormat your thumb drive as FAT32 and name it RESCUE, then copy the EFI and boot folders from the iso to your thumb drive. Which should return something like: /dev/disk2 Apple_partition_scheme

On macOS, assuming you have the iso in the Downloads folder, run the following command on the terminal: hdiutil attach -nomount ~/Downloads/ On Windows (7 and later) or Ubuntu should be straight forward (you just need to double click the iso). In this step we will create a rescue thumb drive that you can use every time you are having trouble booting macOS. Create a rescue thumb drive (Can be done in any OS)

Change the gpu-power-prefs and disable SIPīoot into recovery single user mode (press and hold Command + S + R) and run the following commands: nvram fa4ce28d-b62f-4c99-9cc3-6815686e30f9:gpu-power-prefs=%01%00%00%00ģ. Known Issues: On High Sierra there are problems related to the screen brightness and sleep issues.

Apple 2011 macbook pro gpu