how to repair efi system partition

Rebuild EFI System Partitions

1. Run EasyUEFI as administrator, then click the button.
2. Click the button.
3. Select the destination disk in the drop-down list. If the destination disk is not correctly recognized by EasyUEFI, you...
4. Select the boot partition and system partition from the partition list, the selected partitions will be marked as red.
5. Click the "Rebuild" button to rebuild the partition.

Full Answer

How to restore EFI SYSTEM PARTITION in Windows 10?

Remove the installation media of Windows from the computer and reboot it. Another method with which you can restore the EFI system partition is via clean installing Windows 10 altogether. The steps involved are:

How do I get to the EFI drive?

Boot into something like Windows Setup or Windows Recovery where you'll have access to Command Prompt. Make sure that both your Windows partition and your EFI partition are assigned a drive letter.

What happens if EFI partition is missing?

As mentioned above, EFI partition is quite useful to Windows systems, especially those that use the Unified Extensive Firmware Interface (UEFI). Now, if the EFI partition is missing, there will be a problem with your system booting.

How do I repair the EFI Bootloader?

However, if you must repair the EFI bootloader, follow the appropriate instructions below: Insert the Media (DVD/USB) in your personal computer and restart. Boot from the media. Select Repair Your Computer. Select the operating system, and click next. Verify that the EFI partition (EPS - EFI System Partition) is using the FAT32 file system.

What is EFI recovery partition?

EFI System Partition is a partition dedicated to system installed with UEFI BIOS. Recovery Partition is created by windows, holds data to restore/repair windows in case of troubles.

How do I access my EFI System Partition?

3 AnswersOpen an Administrator Command Prompt window by right-clicking the Command Prompt icon and selecting the option to run it as Administrator.In the Command Prompt window, type mountvol P: /S . ... Use the Command Prompt window to access the P: (EFI System Partition, or ESP) volume.

What is the EFI partition Windows 10?

The EFI system partition is a partition on a data storage device that is used by computers adhering to the Unified Extensible Firmware Interface. When a computer is booted, UEFI firmware loads files stored on the Extensible System Partition to start installed operating systems and various utilities.

How do I reinstall Windows 10 bootloader?

Automatic Windows Bootloader Repair with WinREBoot your device from the recovery disc or Windows 10/11 installation media;Click the Restore System on the installation screen;Then select Troubleshoot -> Startup Repair and select the OS whose bootloader you want to try to repair;More items...•

How do I open an EFI partition in Windows?

Here is what I do:restart machine with Windows 8.1.determine "EFI System" partition with the Disk Management utility.run command prompt as administrator.type diskpart.type select disk 0 then select partition 2 then assign.open windows explorer windows+e.refresh if the drive is not showing F5.More items...

How do I make my EFI partition active?

Method #2: Set Active Partition with the help of Disk ManagementPress shortcut key WIN+R to open RUN box, type diskmgmt. msc, or you can just right-click on Start bottom and select Disk Management in Windows 10 and Windows Server 2008.Right-click on the partition you want to set active, choose Mark partition as active.

What happens if I delete EFI system partition?

Without the EFI partition, your computer won't be able to boot into Windows. In a word, EFI system partition deletion will cause the installed system unbootable. Therefore, EFI system partition is usually protected and locked by the Windows operating systems to prevent and avoid accidental deletion.

How do I fix Windows detected that the EFI system partition was formatted as NTFS?

How to fix Windows detected that the EFI system partition was formatted as NTFS error?Restart your PC. ... Insert your installation USB stick or DVD drive and restart your PC. ... Choose language, time and currency format and input method, and click Next.Press Install Now button.More items...•

Can I move EFI system partition?

Select the EFI System Partition (ESP) you want to move in the first disk/partition list, then select the destination partition in the second disk/partition list, the selected partitions will be marked as red. Step 4. Click the "Move" button to move the partition.

How do I fix EFI Microsoft boot BCD?

File :\EFI\Microsoft\Boot\BCD Error code: 0xc0000034Insert the Windows installation disc in the disc drive or connect USB media and then start the computer.Press a key when you are prompted.Select a language, a time, a currency, a keyboard or an input method, and then click Next.Click Repair your computer.More items...

How do I fix UEFI boot and startup?

Follow these steps:Restart your computer.Press the necessary key to open UEFI/EFI. The key depends on your PC manufacturer and PC model. ... Once inside the UEFI/EFI setup menu, search for Secure Boot. ... Make sure Secure Boot is either Disabled or Off.Save these settings and exit the UEFI/EFI setup menu.

How do I fix a corrupted boot disk?

Method 1: Startup Repair toolStart the system to the installation media for the installed version of Windows. ... On the Install Windows screen, select Next > Repair your computer.On the Choose an option screen, select Troubleshoot.On the Advanced options screen, select Startup Repair.More items...•

Where is the EFI folder located?

The Windows boot manager is located at the \EFI\MICROSOFT\BOOT\ subfolder of the EFI system partition.

How do I open an EFI file?

How to open an EFI file. Typically, EFI files are not meant to be opened. Hardware developers and other advanced PC users can open EFI files using the EFI Developer Kit (cross-platform).

What is an EFI System Partition and do I need it?

EFI or Extensible Firmware Interface System partition is a hidden storage space on Windows PC that is usually spotted on the computer of which the BIOS is UEFI. When the PC is booted, the UEFI loads the file stored in the EFI partition to start the Operating System and any other utilities required.

How do I access my EFI partition in Windows 7?

Reputablerestart machine with Windows 8.1.determine "EFI System" parition with the Disk Management utility.run command prompt as administrator.type diskpart. ... type select disk 0 then select partition 2 then assign.open windows explorer windows+e.refresh if the drive is not showing F5.More items...•

What to do if EFI partition doesn't work?

If it doesn't work, try formatting your EFI partition as FAT32 just to erase it and start from scratch, then try running that command again. Again, that command is what Windows Setup runs when it first installs Windows in order to set up the EFI partition, so it should be able to get you a working EFI partition again.

What does RAID mode mean on Dell?

@hosu6 RAID mode means the Intel Rapid Storage Technology controller is active and abstracting the underlying storage from the OS. That can be the case even if there's no actual RAID virtual disk involved. Switching to AHCI completely disables the RST controller. Dell defaults to RAID mode on all systems for a variety of reasons that have to do with functionality and a bit of history -- except on the handful of systems that they ship with Linux pre-installed from the factory. If you don't actually need RAID mode, then you can switch to AHCI, but that is generally done before reinstalling an OS, not in the middle of a live OS installation.

Can EFI partitions be assigned a drive letter?

Make sure that both your Windows partition and your EFI partition are assigned a drive letter. The EFI partition by default is not assigned a drive letter, but you can use diskpart to assign a letter temporarily. Then make sure you know which drive letter each partition is assigned in the environment you're using.

Can I access my SSD in Linux?

I'm surprised you're able to access your SSD from Linux if your system is in RAID mode. Typically you have to switch to AHCI mode in order to allow Linux to see internal storage. Maybe Linux now has an Intel Rapid Storage driver that supports at least certain generations of the Intel RST controllers built into laptops.

Does EFI bootloader work on Linux?

That will cause the EFI bootloader files from your Windows partition to be copied onto your EFI partition, which should get it working. It won't do anything to help Linux, but it should at least get Windows working.

Is MSR before EFI?

The EFI and MSR partitions are supposed be before any OS partitions. I don't know if it HAS to be that way in order to make things work, but Microsoft's guidance is that the MSR partition must be directly after the EFI partition, and both of those partitions need to be before any OS partitions.

Does Reflect work on Windows?

It supports Linux partitions, although Reflect itself only works in Windows, so if you wanted to access data from your Linux partitions in the backup without having to restore the backup onto a physical disk, you would need to make sure you have a way to read Linux partitions within Windows.

What is EFI system partition?

EFI System Partition is nothing but the formation of various sections in a PC, primarily to ensure that it's possible to control data from every single part independently through the OS connected to a computer system.

Where to find EFI file?

You can find the location of an EFI file in the Boot Order variable. Any computer that has an operating system installed in it will have a boot manager. Many times, you can find the location of this EFI file in a special system partition. Well, this partition doesn't contain a drive letter.

Why is EFI boot loader important?

EFI boot loader ensures that the essential programs are active and ready for use ahead of the booting.

How to fix bootloader?

Step 1: Open the Troubleshoot window . When you open the Automatic repair window, select the "Ad vanced options" button . Now, it will open a window where you will get an option to choose the "Troubleshoot" option. Note that, when your Windows cannot automatically repair the bootloader, then it gives an "Advanced Options" button ...

How to rebuild a BCD file?

Now, it's time to run the REBUILDBCD command. For that, write BOOTREC/REBUILDBCD and hit the enter button. It will rebuild the BCD file and also eliminate the possible issues.

Can UEFI bootloader be broken?

In short, repairing the EFI bootloader in Windows 10 is an easy process. All you have to do is follow the two solutions given in this post. Remember, if your UEFI becomes corrupted or gets damaged, then it will affect the bootloader and also break them. A broken bootloader further affects your Windows, making it fail to reboot.

What is EFI partition?

As you may already know, the EFI System Partition or ESP is a special partition on a Mac from which the initial system boot-time device drivers can be loaded and that was created as a BIOS replacement. This means that if there are issues with the EFI partition, then problems arise.

How to fix a broken EFI?

While not too elegant or tricky, the easiest way to fix a broken EFI is simply to reinstall macOS. This is possible in two ways, either through macOS Recovery or – if the Mac won't boot at all – macOS Internet Recovery. It goes without saying that you should back up your Mac (if you can) before the process.

Is EFI a file system?

As you can see from the screenshot below, the EFI partition file system is correctly classified as EFI type; error s occur when this EFI partition – for whatever reason – receives a new file system and is classified as something else, as was the case when a user reported to the Apple community that their EFI partition was incorrectly classified as HFS+.

Does gdisk work on macOS High Sierra?

Unfortunately, the gdisk command is no longer available on macOS High Sierra, so this trick only works on systems prior to APFS. Have you managed to fix the broken EFI partition using another method? If so, share it with us in the comments section.

How to recover a partition on a hard drive?

Step 1. Open EaseUS Partition Master and click " Partition Recovery " on the top menu. A new window will pop up and ask you to select a disk to start searching for lost partition (s). So choose the desired disk and click " Scan ". Step 2.

What is a BCDBoot boot?

BCDBoot copies the boot files from the Windows partition to the EFI System partition and creates the BCD store in the same partition.

What happens if you don't have an EFI partition?

EFI boot partition missing will cause your computer to have no boot partition to boot from, so you will need to create EFI partition in Windows 11/10, or recover missing EFI boot partition with third-party partition recovery software.

Why do I need an EFI partition?

As we mentioned, the EFI partition is essential if you want to be able to boot up the operating system that you have installed on your internal hard drive. Unless you use an external hard drive to boot Windows OS rather than an internal one, you don't require an EFI partition to boot from the drive. Therefore, when the EFI boot partition in your computer accidentally gets deleted, feel no hesitate to follow the advice here to recover the deleted boot partition, or manually recreate the EFI boot partition by yourself.

How to preview partitions?

You can double click on the partition you're looking for to preview its content.

What is partition master free?

Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

Can I redownload boot files into EFI?

You can check or redownload boot files into the EFI partition, set the computer to boot from your restored EFI partition again in BIOS. Reboot your PC and then you can continue using your computer again.

How to rebuild EFI partition?

Step 1. Run EasyUEFI as administrator, then click the 'Manage EFI System Partition' button. Step 2. Click the 'Rebuild EFI System Partition' button. Step 3. Select the destination disk in the drop-down list.

What happens if you delete EFI partition?

If you delete the EFI System Partition on the system disk by mistake or files stored on this partition are damaged or lost due to unknown reasons, the Windows OS will not be able to start successfully.

How to recover EFI partition?

You can restore the lost EFI partition through Command Prompt or via a Windows 10 clean installation. Both methods are quite effective so either one you choose is fine. If you cannot boot your computer because the EFI partition is broken, Recoverit Data Recovery can restore your system files and data.

What is EFI Partition?

EFI system partition (ESP) is a partition found on a storage device such as a hard drive, the files of which are used by UEFI (Unified Extensible Firmware Interface) to start different utilities, as well as the installed operating system i.e Windows. EFI stands for Extensible Firmware Interface. EFI partition creates various sections on the hard disk of your computer. The information stored in these different sections is normally managed on a separate basis by Windows OS. EFI partition contains four major parts including device drivers, data files, boot loaders, and system utilities.

How to restore EFI partition in Windows 10?

To restore or create an EFI partition in Windows 10 using Command Prompt, follow these steps: Use your Windows 10 installation or bootable media to boot your PC since your PC is unbootable on its. When the computer is on the first screen, press these keys on your keyboard: "Shift" and "F10", altogether. This shortcut will lead you ...

What happens if you don't have EFI?

Now, if the EFI partition is missing, there will be a problem with your system booting. While the boot loader (UEFI in this case) is tasked with loading all the necessary utilities and files before the booting sequence is complete, the ESP resolves any errors that could prevent the booting from being a success. In a nutshell, if the EFI partition goes missing, your Windows will be unable to boot.

3 ways to repair Windows 11 UEFI bootloader

The corruption mentioned in the scenario is the corruption of the Windows bootloader, which usually happens while users try to install the second operating system or remove data and files on the hidden partitions.

Bonus tips

In this post, we introduce three ways to repair Windows 11 UEFI bootloader, you can try them according to your situation.