Windows 10: Native VHDX boot - Windows won't use a pagefile

Right now I'm booting off of a VHDX file natively. Works great, except no matter what I do, Windows won't create or use a page file! I did some research, and unlike when the VHDX is booted in Hyper-V, native VHDX boot won't put hiberfil.sys, pagefile.sys, and swapfile.sys on C:\, the VHDX file. Fine, fair enough.But every time I boot from the VHDX, the advanced system options menu opens, and says no page file is created. If I set a pagefile on the physical disk volume, the pagefile.sys will be created, and the timestamp will be updated, but then never used. The only thing I haven't done is try

:)

 

Native booting vhdx file not working

Testing in a virtual machine will not work unless the vhdx has boot files.

All you need to do to native boot vhdx file is

1. Boot to Windows.

2. Attach vhdx file from disk management.

3. Note the drive letter of windows in attached vhd.

4. Type following

bcdboot #:\windows

where # is drive letter from step 3.

 

Native booting vhdx file not working

Done all that. The problem seems to be with the vhdx file being located on another drive. It works fine from the primary drive, which is no good for my strategy.

I found a post on another forum where it was suggested to use mount point GUID instead of drive letters in the bcdedit command as the drive letters of other disks may not be assigned at the time. If you can explain how to do that I'd be grateful.

 

Reusing vhdx (native boot) in Hyper-V

Hey all,

I created a .vhdx in disk management, initialised, new volume and formatted.

Deployed Win 10 Insider 17754 to it using dism /apply-image etc. Updated the bcd store on main OS, booted to .vhdx natively no issues.

Now since MSoft doesn't allow the upgrade to newer builds for vhd's I wanted to attach the .vhdx to a virtual machine in Hyper-V (on my main install obviously) and then perform the upgrade process.

Tried creating a gen 2 machine, attached the .vhdx, didn't boot. Tried attaching an .iso of the Win10 install also, still didn't boot.

Created a gen 1 machine, with both .vhdx and .iso attached, it booted from the .iso but said no disk drive was detected/installed.

I tried using the repair computer option, setup couldn't repair it, so loaded up command prompt used diskpart, it picked up the drive, marked the current partition active, and tried to manually enter the following commands:

bootrec /fixmbr (successful)
bootrec /fixboot (fail) said something like access denied
bootrec /rebuildbcd (success)

Restarted the VM in Hyper-V still not booting from the attached .vhdx nor did the install from .iso detect the drive either.

Any suggestions as to how I can boot from the vhdx and upgrade the windows installation to build 17760 and then reuse the same .vhdx to boot natively?

Regards