How to Repair EFI Bootloader on Windows and Mac

In this article, we will learn how to Repair EFI Bootloader on Windows and Mac instead of a classic BIOS and a GPT disc partition table instead of an MBR table. Corruption of the Windows bootloader can happen after installing a second OS (in Dual Boot configurations).

if the file system is damaged, if you do something wrong during Windows recovery, if you delete some data from hidden partitions, or if you have malicious software (like a virus or ransomware) on your computer. UEFI came before EFI (Extensible Firmware Interface), which Intel has since stopped using.

How to Repair EFI Bootloader on Windows

Create a WinPE bootable disk

• Launch EaseUS Partition Master, and click “Bootable Media” on the toolbar. Select “Create bootable media”.
• Click “Next” to finish the process.

Boot Partition Master Bootable USB

• Connect the bootable USB or CD/DVD to your PC. 
• Press F2 or Del when you restart the computer to enter the BIOS screen. Set and boot your computer from “Removable Devices” or “CD-ROM Drive”. And then EaseUS Partition Master will run automatically.

Rebuild MBR

• Click “Toolkit” and choose “Rebuild MBR“.
• Select the disk and the type of MBR. Then, click “Rebuild“.
• After that, you can see “MBR has been successfully rebuilt on Disk X“.

Repair EFI Bootloader on Mac

Reinstall macOS

• 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.

you can visit Microsoft support center for further help.

What Is EFI System Partition?

• OS System utility programmes’ boot loader files
• The files for the device driver
• Data files
• This EFI System Partition is there to make sure that the UEFI tends to boot up the OS and the rest of the device’s features right away when you turn on the computer. EFI boot loader makes sure that the most important programmes are running and ready to use before the computer starts up.

ESP also makes sure that problems with the system that the operator often runs into are fixed. In an operating system, the boot loader is a part that makes sure that the PC is fully booted when the user turns it on.

Also, if you delete an ESP system partition, the device might not work right and the installed system might stop being able to start up. Because of this, Windows operating systems often protect and lock the EFI system partition. It stops the EFI System Partition from being removed by accident. So, this is the reason why Windows File Explorer doesn’t show ESP.

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