![]() Just for comparison here are the diskutil and gpt output for my very standard layout. sudo diskutil mount disk0s2Īfter you are finished copying, use the commands below to unmount the two EFI volumes. However if you want to try, then after step 6, use the commands below to mount the two EFI volumes. ![]() I neglected to include a step where any of the contents of the old EFI partition is copied to the new EFI partition. Restart the Mac to reassign the identifiers in ascending order. This command will also arrange the GPT entries in ascending order without changing the identifiers disk0s1 and disk0s3. diskutil listĮnter the command below to remove the original EFI partition. Confirm disk0s2 has a TYPE of EFI and a NAME of NO NAME. Open a Terminal window and enter the command below. This will be fixed in a later step.Įnter the command given below to format the new EFI partition. Note: This will result in GPT entries that are no longer in ascending order. gpt -f add -i 3 -b 6 -s 76800 -t efi disk0 sw_versĮnter the command given below to add a new EFI partition as the third entry in the GPT. Open a Terminal window and enter the command below to confirm the ProductVersion shows the same version or newer than the macOS you are using. The recovery that is already on your internal drive should work just as well. ![]() You do not have to use internet recovery. I do not want to delete both disk0s1 and disk0s2 and then create a new EFI partition in the right disk0s1 location, since I am afraid that deleting disk0s1 will result in problems.īelow are the steps needed to correct your problem.īoot the Mac to a version of macOS Recovery that is the same version or newer than the macOS you are using. I posted this answer since the steps fulfill your requirement given below.
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