Diskpart

lastmod 2019-03-16created 2019-03-161 edits

How to repair startup in UEFI mode

• [https://prolite.tistory.com/729 Windows 10 startup repair (Diskpart)
• Windows 10 format and install: bootrec /fixboot Access is denied
• Windows10 boot repair error

Windows 10 startup repair (Diskpart):

1. Create USB installation media with the Media Creation Tool
2. Boot from the USB installation media
3. On the Windows 10 setup screen, press Shift + F10 on the keyboard to open the Command Prompt.
4. Enter the commands as follows. (The following is an example.)
   • diskpart
5. Select the disk where Windows 10 is installed with the sel disk 0 command.
6. Check the list of volumes with the list vol command.
7. Once you have selected the volume, enter the assign letter=b: command to mount that volume as drive B.
8. To exit diskpart, type the exit command and press Enter.
9. Enter the cd /d b:\EFI\Microsoft\Boot\ command to move to the boot folder.
10. Enter the bootrec /fixboot command to repair the boot sector.
11. Enter the ren BCD BCD.bak command to back up and remove the BCD.
12. To recreate the BCD, enter the bcdboot c:\Windows /l ko-KR /s b: /f ALL command and press Enter.
13. Remove the installation media, reboot the device, and check whether the problem is resolved.

See also

• Windows
• Windows Recovery Environment (Windows RE)