• Boot to unlocked/advanced BIOS settings menu
• This installs to internal HDD and adds to UEFI boot menu
• zedk should be added before the OS when re-creating boot entries from scratch with efibootmgr (like remove shim) ¹⁾
• 2026/02/28: Doesn't seem to expose unlocked menus on Latitude 5591 like UMAF

• https://github.com/kohlschuetter/zedk

• Windows 10 (21H2)

• /S specifies system EFI partition for MOUNTVOL and assigns unused drive letter Y for Y:\EFI (source)
• Add to boot menu in firmware settings after copying ²⁾

DEL /Q "%UserProfile%\Downloads\zedk.zip" & "%SystemRoot%\System32\curl.exe" --output "%UserProfile%\Downloads\zedk.zip" --location "https://github.com/kohlschuetter/zedk/releases/download/zedk-20260224/zedk-20260224.zip" && RMDIR /S /Q "%UserProfile%\Downloads\zedk" & MKDIR "%UserProfile%\Downloads\zedk" && "%SystemRoot%\System32\tar.exe" xf "%UserProfile%\Downloads\zedk.zip" -C "%UserProfile%\Downloads\zedk"

• Uncomment last 3 for auto-start

"%SystemRoot%\System32\notepad.exe" "%UserProfile%\Downloads\zedk\startup.nsh"

MOVE /Y "%UserProfile%\Downloads\zedk\EFI\Boot\bootx64.efi" "%UserProfile%\Downloads\zedk\EFI\Boot\zedk.efi"

"%SystemRoot%\System32\mountvol.exe" Y:\ /S

"%SystemRoot%\System32\Robocopy.exe" "%UserProfile%\Downloads\zedk" "Y:" /MOVE /E

"%SystemRoot%\System32\mountvol.exe" Y:\ /D & DEL /Q "%UserProfile%\Downloads\zedk.zip"