How to Fix Efi Boot on Mac?

How to Fix a Broken EFI Partition

Reboot your Mac and then press and hold the Command + R keys immediately until the Apple logo appears.
Choose “Reinstall macOS” from the macOS Utilities screen.
Select the target drive, and then just let macOS do its job.

What is EFI Boot on Mac?

The " EFI Boot " appears because the Mac firmware finds the boot file BOOTx64. EFI in the folder \EFI\BOOT on the EFI partition of your internal drive. This is part of the UEFI specification. For example, if you go to the "uefi.org Specifications web page", you can download and view the "UEFI Specification Version 2.5".

How do I Reset my EFI Partition Mac?

First off, reboot Mac. Then, during boot, hold down “ Command + Option + R” key button. When a spinning globe icon appears on the screen, you have entered Internet Recovery mode. When finished downloading, in the subsequent “OS X Utilities” screen, you should choose “Reinstall OS X”.

How do I Access EFI on Mac?

Like the BIOS, the EFI has its own interface or "shell" that allows you to change hardware settings. Apple does not include this shell in its Macintosh computers. Despite misconceptions about different types of Mac firmware, there is no way to access the EFI directly.

How do I Fix my EFI Partition?

Insert the Media DVD/USB in your personal computer and restart.
Boot from the media.
Select Repair Your Computer.
Select Troubleshoot.
Choose Command Prompt from the menu: ...
Verify that the EFI partition EPS EFI System Partition is using the FAT32 file system.