Bcdedit [PREMIUM вњ¦]
1. Overview BCDEdit is a powerful command-line tool included in all modern versions of Windows (Vista, 7, 8, 10, 11, Server 2008+). It is the primary interface for managing the Boot Configuration Data (BCD) store, a database that replaces the legacy boot.ini file used in older Windows versions (NT, 2000, XP).
bcdedit /set 5d5f9a7c-... bootlog Yes Disable Driver Signature Enforcement (for test-signed drivers): bcdedit
bcdedit /set current debug on bcdedit /set current debugtype serial bcdedit /set current debugport 1 bcdedit /set current baudrate 115200 Network debugging (WinDbg over Ethernet): bcdedit /set 5d5f9a7c-
bcdedit /copy current /d "Windows 11 - Debug Mode" The command returns a new GUID, e.g., 5d5f9a7c-... . Use this GUID in subsequent commands. Set the boot menu description: Use this GUID in subsequent commands
bcdedit /export C:\BCD_Backup bcdedit /import C:\BCD_Backup /clean bcdedit /copy current /d "Boot from VHD" bcdedit /set guid device vhd=[C:]\Windows.vhdx bcdedit /set guid osdevice vhd=[C:]\Windows.vhdx bcdedit /set guid path \Windows\system32\winload.efi 5.3 Enabling Hyper-V (if disabled) bcdedit /set hypervisorlaunchtype auto To disable Hyper-V:
bcdedit /deletevalue current safeboot bcdedit /delete 5d5f9a7c-... /cleanup The /cleanup flag removes associated files (e.g., hiberfile for that entry). 4. Special Identifiers | Identifier | Meaning | |------------|---------| | current | The OS entry that is currently running. | | default | The entry that will boot if no user selection is made. | | bootmgr | The Windows Boot Manager entry (controls the menu). | | memdiag | Windows Memory Diagnostic entry. | | ntldr | For booting legacy OSes (Windows XP) via ntldr . | | fwbootmgr | Firmware boot manager (UEFI only). | 5. Advanced Use Cases 5.1 Repairing or Rebuilding the BCD Store Boot from Windows installation media в†’ Repair your computer в†’ Troubleshoot в†’ Command Prompt:
bcdedit /set 5d5f9a7c-... testsigning on Set timeout (seconds):