Dual boot with bitlocker: Troubleshooting Guide

By / March 2, 2023

BitLocker is a Microsoft feature that encrypts the data on storage devices.
BitLocker is most commonly used with hard drives, but it can also encrypt other storage devices, such as USB flash drives, SD cards, and DVDs.
However, some users can’t dual boot Windows and BitLocker.
> So I have a PC with Windows 8.0 (I upgraded from 8.0 to 8.1), and I installed > BitLocker.
When I entered Bios, unallocated some space, rebooted, and > installed Windows 8.1, Windows 10 started to install, and when it reached > 80%, it just stopped installing.
If I try to boot to Windows 8.0, BitLocker > allows me to press F2 (or F8), and boot to BIOS, but while in BIOS, it > doesn’t show the option to recover, repair, or load BitLocker.

Modify the Boot Configuration Data (BCD)

  1. Go to Start > type bcdedit > right-click on BCDEdit > select Run as Administrator.
    Go to Start > type bcdedit > right-click on BCDEdit > select Run as Administrator.”></li> <li>In the BCDEdit window, go to File > Export.</li> <li>Save the BCD file to the USB.</li> <li>Delete the BCD file from the System drive.</li> <li>Plug in the USB into the computer.</li> <li>On the boot screen, press F8 repeatedly until it displays an option to boot from the USB.<br /><img decoding=
  2. Select the USB from the list.

Perform Startup repair

  1. Press Windows Key + X and select Command prompt (Admin) or Powershell (Admin) from the menu.
    When Command prompt or PowerShell starts, enter the following command and press Enter: DISM.exe /Online /Cleanup-image /Restorehealth
  2. Wait while the scan is performed.
    Wait while the scan is performed.
  3. Once the scan is complete, try running the setup again.

Boot to safe mode

  1. Right-click on the Start button and select Command prompt (Admin)
  2. Type the following commands and press Enter after each:bcdboot /enum bcdboot /enable bcdboot /exit
  3. Restart your computer.

Use Command prompt

  1. Type cmd in Run, and right-click on the Command prompt option.
  2. Select Run as administrator from the context menu.
    Select Run as administrator from the context menu.
  3. Now type this command in the Command prompt window, and press Enter: DISM.exe /Online /Cleanup-Image /RestoreHealth
  4. Wait for the command to complete.
  5. Close the Command prompt and reboot the computer.
  6. Restart the computer into Safe mode.
    Restart the computer into Safe mode.
  7. Connect an external drive with Windows 10 on it.
  8. Boot into Safe mode.
  9. Connect your external drive.
  10. Open Windows Explorer.
    Open Windows Explorer.
  11. Right-click on the drive and select Format.
  12. When Format window opens, select NTFS from the File system option and press the Format button.

Turn off Fast Startup

  1. Go to Settings > Update & Security > Recovery
  2. Turn on the Restart now button
    Turn on the Restart now button
  3. Go to Troubleshoot > Advanced Options
  4. Restart your PC
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