Editing win 10 boot loader options install#
Editing win 10 boot loader options driver#
Editing win 10 boot loader options windows 10#

Editing win 10 boot loader options driver#

Run list volume again and note that the ESP is now assigned a driver letter. Now do select volume x (where x is the volume number for the ESP) and then assign letter=N: to mount the partition. Note the volume number for your EFI system partition (ESP). Select that disk with select disk x (where x is the disk number from the last step). Note the disk number for the disk with your EFI system partition (ESP). When prompted, choose 'Repair your computer', followed by 'Troubleshoot', 'Advanced Options', and finally 'Command Prompt'.

Editing win 10 boot loader options windows 10#

Grab the Media Creation Tool, make yourself a Windows 10 installation DVD or USB drive, and then boot into it. There's unfortunately almost no up-to-date guides on fixing the UEFI Windows Boot Manager (almost all of them just say to run the graphical Startup Repair utility, but that doesn't fix the problem in all cases), but I finally found the correct solution buried in this article, which requires the use of the bcdboot command instead: If I remember I’ll try to make some time to do that tomorrow.The other answers given here work great on MBR/BIOS systems, however if you're on a UEFI system like I am, bootsect will just write a semi-functional boot MBR over the GPT protective MBR and bootrec just gives an 'Access denied' error message, and neither one has a functional option to fix a broken EFI system partition, which on a UEFI/GPT drive is what contains the bootloader that used to be stored in the MBR. Probably will put them in the fog community scripts git or add them to my fogAPI module, the former might make more sense, so they’re findable outside of a single blog post.

When I get a moment (like that will ever happen) I’ll try to universalize my bootmgr configuration powershell functions a bit and share them.

Editing win 10 boot loader options install#

I am fairly sure this is a ‘feature’ of windows 10 with the intent of helping users that had changed their boot order to boot to install media and then don’t have to worry about going back into the bios settings and changing it to the new boot manager. I find it gives a nice balance between faster boot time for users and flexibility in support. That way I have a boot menu that I can pick between windows, fog (required copying latest ipxe.efi file to each machine’s uefi partition), and even options for uefi shell and uefi firmware settings without any special keystrokes. My workaround for this happening was to use refind as my default bootloader, which I configure before capturing the image and then again after I deploy the image in scripts to ensure it sticks. But that would be a dell hardware specific tool, where the efibootmgr would be hardware agnostic. There is a linux version of cctk that again could be used in a postinstall script. At this time I don’t know if the efibootmgr is compiled into the inits or I grabbed it from a centos install when I was testing the project.Īnd in the fwiw bucket, the dell cctk was mentioned below. So it may be possible to write a postinstall script to change the order to what ever order you need (if its fog that is changing the boot order and not windows). When I was working on another project I know that efibootmgr (linux utility) can be used to modify the uefi boot order.I can understand why this seems a bit broken but in this case FOG didn’t change the boot order. In this configuration the Windows Boot manager was not installed in the firmware and I had to go in manually and select the hard drive for booting. The system is/was in uefi mode but I had to deploy the image in bios mode because in uefi mode iPXE will never finish initializing the devices.

This may be useless information at the moment, but I’m going to post it here for completeness.