how to repair efi/gpt bootloader on windows 10

How to repair EFI/UEFI bootloader on GPT HDD?

If you don’t have the Windows 8/8.1/10 installation Media, follow these steps to repair EFI/UEFI Bootloader on GPT HDD: 1. Restart your Windows 8/8.1/10 PC and tap rapidly on the F8 key before the Windows splash screen appears.

How to manually restore EFI Windows 10 bootloader?

Now let’s see how our Support Engineers manually restore the EFI Windows bootloader. To repair the bootloader configuration, we have to boot from the original installation of Windows 10 media. After booting into the recovery environment, we open a command line: select System Restore >> Troubleshoot >> Command Prompt.

How to verify EFI Bootloader is using FAT32 file system?

Verify the EFI partition is using FAT32 file system and assign a drive letter to it > Type command and hit Enter each time: If you don't have Installation Media for Windows 10/8.1/8, follow below guide to repair Windows 10/8.1/8 EFI bootloader without Installation Media:

How to fix EFI boot error in Windows 7?

If you have the Installation Media, follow below tips to fix EFI boot in Windows 7: 1. Insert Windows 7 Installation Media (DVD/USB etc.) in your PC. 2. Restart PC and boot from Installation Media > Select "Repair Your Computer" > Select operating system and click next

How do I fix UEFI bootloader?

Fix #1: Use bootrecInsert the original Windows 7 installation CD/DVD and boot from it.Select a language, keyboard and click Next.Select the operating list (Windows 7) from the list and click Next.At the System Recovery Options screen, click Command Prompt. ... Type: bootrec /fixmbr.Press Enter.Type: bootrec /fixboot.More items...

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 boot from EFI in Windows 10?

To boot to UEFI or BIOS:Boot the PC, and press the manufacturer's key to open the menus. Common keys used: Esc, Delete, F1, F2, F10, F11, or F12. ... Or, if Windows is already installed, from either the Sign on screen or the Start menu, select Power ( ) > hold Shift while selecting Restart.

How do I rebuild Windows Boot Manager?

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. After Startup Repair, select Shutdown, then turn on your PC to see if Windows can boot properly.

How do I manually rebuild my BCD?

To do this, please follow the steps below.Press F8 during your computer's startup (before starting Windows). ... Select the operating system you want to repair, click next.In the system recovery options, click "Command Prompt".Type at the prompt, Bootrec / RebuildBcd, and then press enter.

How do I make my GPT disk active?

Convert the primary and shadow drives to DynamicWith Diskpart.exe, select the disk that you want to convert to dynamic, and then convert it to dynamic. Perform this on both the shadow and primary GPT disks. ... Shut down and restart your computer to complete the conversion of the system drive (disk-0) to dynamic.

How do I run a repair on Windows 10?

Use a fix-it tool with Windows 10Select Start > Settings > Update & Security > Troubleshoot, or select the Find troubleshooters shortcut at the end of this topic.Select the type of troubleshooting you want to do, then select Run the troubleshooter.More items...

How do I remove grub and restore Windows bootloader?

To remove it:Hit Windows + X and select Disk Management .Find the Ubuntu partition. It will probably be a large partition without a drive letter.Be sure you have the correct partition!Right-click the partition and delete or reformat it with a Windows filesystem.

Is EFI and UEFI the same?

The Unified EFI (UEFI) Specification (previously known as the EFI Specification) defines an interface between an operating system and platform firmware.

How do I fix corrupted MBR in Windows 10?

Fix the MBR in Windows 10Boot from the original installation DVD (or the recovery USB)At the Welcome screen, click Repair your computer.Choose Troubleshoot.Choose Command Prompt.When the Command Prompt loads, type the following commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.More items...

What do I do if Windows Startup Repair doesn't work?

If you cannot use Startup Repair, then your option is to disable automatic restart, run chkdsk and rebuild bcd settings....Type following command lines and press Enter after each to fix Startup Repair stuck issue:bootrec /fixmbr.bootrec /fixboot.bootrec /rebuildbcd.

How do I recreate EFI partition?

More secure way to restore EFI partition in Windows 10Select the system backup task and click "Next". ... Select to restore entire backup or a part and click "Next".Confirm operations on the “Operation Summary” page and click on “Start Restore” button.Restart your computer to boot from the original hard drive.

What is 0xc0000098?

0xc0000098 is a BSOD error code that may appear after cloning OS or upgrading to Windows 10. This error code is caused by two issues: The BCD has no entry, which may be caused by disk write errors, power outages, boot sector viruses, or errors made while configuring the BCD manually.

How do I fix 0x00000f?

"Error code 0x00000f Windows 10" may be caused by a change in BIOS settings. The change might have affected the booting setting of the BIOS which causes the error. Try reset your BIOS settings to restore it to default....1. Reset BIOSAccess BIOS.Load default settings.Save changes and Exit BIOS.Restart your PC.

What does Bootrec ScanOs do?

/ScanOs. This option scans all disks for installations that are compatible with Windows Vista or Windows 7. It also displays the entries that are currently not in the BCD store. Use this option when there are Windows Vista or Windows 7 installations that the Boot Manager menu does not list.

The Boot Configuration Data For Your PC Is Missing: Efi\Microsoft\Boot\Bcd

If the bootloader in Windows on UEFI system is corrupted – it’s impossible to start the system or user facing a blue screen with the following erro...

Automatic Windows Bootloader Recovery

The procedure for automatic recovery of the bootloader, which is used in the Windows Recovery Environment (WinRe), is usually powerless in such cas...

Manually Restoring The Windows 10/ 8 Bootloader Using The Installation Media

Let’s proceed to the procedure of manual recovery of the EFI boot loader on Windows 10 / 8.1.So to recover the loader (BCD) configuration, you have...

How to repair bootloader?

The procedure for the automatic repair of the bootloader used in the Windows Recovery Environment (WinRE), is usually useless in such cases. But it’s worth a try anyway: 1 Try to boot your device from the recovery disc or installation Windows 10 media; 2 On the installation screen, click the Restore System; 3 Then select Troubleshoot -> Startup Repair and select the OS whose bootloader you want to try to recover; 4 But most likely the result will be negative: Automatic Repair couldn’t repair your PC.

Can I use an EFI bootloader on a GPT partition?

The point is that the EFI bootloader is used only on disks with a GPT partition table. If the disk has an asterisk ( *) in the Gpt column, then the GPT partition table is used, if not, the MBR is used. If your disk uses a GPT partition table, follow the steps below in the instructions to repair the Windows EFI bootloader.

Does bcdedit see EFI partition?

The bcdedit tool doesn’t see this EFI partition, and cannot manage the bootloader configuration on it. If the computer boots with a black screen with the message “Operating System not found”, most likely the Windows bootloader is completely removed. Follow the instructions on the link.

How to fix UEFI bootloader?

1. Restart your Windows PC and tap rapidly on the F8 key before the Windows splash screen appears. 2. Select Repair your computer->Command Prompt. The next steps are the same with the Windows 7 Installation media method, which is from the above step 5 to step 8. >>Repair EFI/UEFI Bootloader in Windows 8/8.1/10.

What is EFI in Windows 10?

The E FI (Extensible Firmware interface), which has been deprecated by Intel, is the predecessor of UEFI.. It replaces the Basic Input/Output System (BIOS) firmware interface, but the UEFI/EFI firmware implementations provide legacy support for BIOS services. The Bootloader is a program that loads the Windows 10/8/7 operating system ...

What is UEFI in BIOS?

The UEFI (United Extensible Firmware Interface) is an updated version of BIOS which defines an interface between an operating system and platform firmware. The interface consists of data tables that provide a standard environment for booting an OS and running pre-boot applications. The EFI (Extensible Firmware interface), ...

How to make bootable media with Windows 10?

1. Choose an empty USB flash drive (the capacity should be larger than 13GB) or external hard drive to make bootable media with a working Windows 10/8/8.1/7 PC, which has the same operating system and EFI/UEFI as yours. 2.