software:microsoft:windows:boot
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software:microsoft:windows:boot [2018/05/13 19:14] – superwizard | software:microsoft:windows:boot [2022/09/18 18:43] – superwizard | ||
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+ | ====== Boot ====== | ||
+ | |||
+ | ------------------------------------------------------------------------------------------------------------------------------------------------\\ | ||
+ | ====== Windows 10 bootrec /fixboot access is denied ====== | ||
+ | |||
+ | |||
+ | From: https:// | ||
+ | |||
+ | |||
+ | < | ||
+ | Windows 10 Installation Media: | ||
+ | |||
+ | Insert the Media (DVD/USB) in your PC and restart. | ||
+ | Boot from the media. | ||
+ | Select Repair Your Computer. | ||
+ | |||
+ | Select Troubleshoot. | ||
+ | |||
+ | Choose Command Prompt from the menu: | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | Diskpart | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | List disk (Note which disk is your Boot drive number mine is 0) | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | Sel disk 0 | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | List vol (Note which volume is the EFI partition mine is 4) | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | Sel vol 4 | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | assign letter=V: | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | Exit | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | V: | ||
+ | |||
+ | After you have assigned a drive letter Using Diskpart You can format the EFI partition: | ||
+ | |||
+ | Example: if you assigned a letter V to the partition the command would be: | ||
+ | |||
+ | format V: /FS:FAT32 | ||
+ | |||
+ | After the format you need to recreate the EFI directory structure with the command: | ||
+ | |||
+ | MD \EFI\Microsoft\Boot | ||
+ | |||
+ | Then change to the Boot directory with: | ||
+ | |||
+ | cd /d V: | ||
+ | |||
+ | Then run: | ||
+ | |||
+ | bootrec /FixBoot (if -Access Denied- See correction below) | ||
+ | |||
+ | Finally run: | ||
+ | |||
+ | bcdboot c:\Windows /l en-us /s V: /f All | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | bcdboot C:\windows /s V: /f UEFI (This replaces the above crossed out lines and works in Win 10 1709) | ||
+ | |||
+ | </ | ||
+ | |||
+ | < | ||
+ | Remove This | ||
+ | |||
+ | After the format you need to recreate the EFI directory structure with the command: | ||
+ | MD \EFI\Microsoft\Boot | ||
+ | Then change to the Boot directory with: | ||
+ | cd /d V: | ||
+ | Then run: | ||
+ | bootrec /FixBoot | ||
+ | Finally run: | ||
+ | bcdboot c:\Windows /l en-us /s V: /f All | ||
+ | |||
+ | </ | ||
+ | |||
+ | < | ||
+ | |||
+ | A D D T H I S | ||
+ | |||
+ | Type in the command: | ||
+ | |||
+ | bcdboot C:\windows /s V: /f UEFI (This replaces the above crossed out lines and works in Win 10 1709) | ||
+ | |||
+ | </ | ||
+ | |||
+ | From < | ||
+ | |||
+ | I struggled with this error too. I got it working by booting for an USB drive created with Rufus. A Windows DVD or another bootable medium would work too. Maybe the path changes in that case. | ||
+ | I verified if the BCD-Template file exists from the command prompt (which in my case didn' | ||
+ | dir %WINDIR%\System32\Config\BCD* | ||
+ | |||
+ | Then I copied the BCD-template file from the Rufus disk (X:) by issuing: | ||
+ | xcopy X: | ||
+ | |||
+ | From < | ||
+ | |||
+ | |||
+ | ====== Access Denied ====== | ||
+ | |||
+ | Step 9. Type assign letter=N: and press Enter. N: can be replaced by any drive letter that is not taken by any partition. Remember which drive letter you assign here for it is rather useful in the rest steps. | ||
+ | Step 10. Type exit and press Enter to leave diskpart. | ||
+ | Step 11. Now type N: (the drive lettered you just assigned) and hit Enter. | ||
+ | Step 12. Type format N: /FS:FAT32 and hit Enter. | ||
+ | Step 13. Type bcdboot C:\windows /s N: /f UEFI and hit Enter. | ||
+ | Now repeat the process of running the bootrec /fixboot command, bootrec access is denied Windows 10 should be solved now. But if fixboot access is denied occurs on an MBR disk, continue with Fix #2. | ||
+ | |||
+ | From < | ||
+ | |||
====== How to repair the EFI Bootloader in Windows 10 ====== | ====== How to repair the EFI Bootloader in Windows 10 ====== | ||
+ | |||
+ | From: https:// | ||
+ | |||
+ | < | ||
+ | This article provides information about how to resolve an issue with the EFI Bootloader not booting correctly on a GPT Hard Disk Drive for a number of Windows Operating Systems. | ||
+ | |||
+ | Table of Contents: | ||
+ | Introduction | ||
+ | How to repair your EFI Bootloader | ||
+ | How to repair your MBR (Master Boot Record) | ||
+ | </ | ||
+ | |||
From: https:// | From: https:// | ||
Line 11: | Line 150: | ||
3. Rebuild the BCD store | 3. Rebuild the BCD store | ||
</ | </ | ||
+ | |||
+ | |||
+ | ====== MBR fix ====== | ||
+ | |||
+ | |||
+ | From: https:// | ||
+ | |||
+ | < | ||
+ | Here are commands to fix bootloader: | ||
+ | diskpart | ||
+ | select disk 0 | ||
+ | select partition 2 | ||
+ | assign letter=g | ||
+ | exit | ||
+ | bcdboot c:\windows /s g: | ||
+ | </ | ||
+ | |||
+ | ====== Restore registry ====== | ||
+ | |||
+ | From: https:// | ||
+ | |||
+ | < | ||
+ | Type the following command to move inside the RegBack, which contains a | ||
+ | backup of the Registry, and press Enter: | ||
+ | |||
+ | cd c; | ||
+ | </ | ||
+ | |||
====== Boot Configuration Data in Windows Vista ====== | ====== Boot Configuration Data in Windows Vista ====== |
software/microsoft/windows/boot.txt · Last modified: 2024/04/28 03:40 by superwizard