UEFI Client PXE Boot error fails with BSOD: Unmountable_Boot_Volume

[moob]

Hi experts

When I try to boot my uefi client from LAN it successfully downloads boot.wim from my WDS 2012, shows the Windows Logo for some seconds, but then it crashes, showing BSOD and the message "UNMOUNTABLE_BOOT_VOLUME".

I'm using the same x64 boot.wim as with the BIOS clients, but with the mbr clients it works.

What is it, that makes my boot.wim unusable for uefi clients?

[anyweb]

for UEFI boot to work, you need the architecture of the boot wim to match the architecture of the UEFI device, does it ?

also, what about storage drivers for your hardware, have you added any to your boot image ?

[moob]

for UEFI boot to work, you need the architecture of the boot wim to match the architecture of the UEFI device, does it ?

also, what about storage drivers for your hardware, have you added any to your boot image ?

boot.wim contains Win PE and Windows Setup, both x64

I have not added any drivers since the boot.wim works as soon as I switch back to legacy mode.

[anyweb]

ok is the disc formatted as GPT or not, when you change hardware to UEFI the disc must be in the right format,

can you video the booting process so i can see the errors as they occur ?

[moob]

ok is the disc formatted as GPT or not, when you change hardware to UEFI the disc must be in the right format,

can you video the booting process so i can see the errors as they occur ?

ok, I'll do the vid.

I thougt the formatting would be done during Unattended Setup by the component Disk Configuration in WindowsPE???

[anyweb]

are you deploying systems solely with WDS, why not use MDT which is free and well documented (and supported) ?

[moob]

because I know nothing about mdt and because wds has been running without any issues until I started playing around with uefi...
here's the video

[anyweb]

MDT is easy, you should get into it sooner rather than later, plenty of videos and guides out there to help you along, if you run my powershell script you'll have a working server up and running in minutes.

 

as regards the video, clearly it's bluescreening but i'm not sure if that's the OS on the computer or otherwise, didn't see how you booted it to the boot image.... (network, usb, whatever)

[moob]

It is a network boot and the bluescreen appers right after successful download of boot wim, video starts right after this

 

ok, I'll look into mdt. but my guess is that also with mdt my uefi client would need to be able to boot from LAN...

[anyweb]

with mdt you can boot from lan/usb/media no problem, and it handles uefi as well as legacy easily

[moob]

I installed mdt on my wds server and made a lite touch boot image.

Guess what.

I pxe boot my uefi client, select the lite touch boot image and: bluescreen and unmountable_boot_volume.