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Hi folks
Using KVM/QEMU as Host you can create a SINGLE VM which on powering up will allow you to boot different installations of Windows (or even other OS'es).
The trick is to allocate a large chunk of Disk for the primary disk, create single EFI and MSR partitions on it (boot either a Windows install iso ->repair windows system .-> command mode or winpe) , create via DISKPART some VHDX files for Windows and for other OS'es another partition), attach the vhdx file and use /dism Apply-Image and bcdboot to create the boot mgr.

follow the thread I posted on theW10 Forums for details and screenshots. This one shows a VM on booting will show a boot menu to boot either into W10 or W11. Only ONE VM needs to be defined on the HOST.
www.tenforums.com
Cheers
jimbo
Using KVM/QEMU as Host you can create a SINGLE VM which on powering up will allow you to boot different installations of Windows (or even other OS'es).
The trick is to allocate a large chunk of Disk for the primary disk, create single EFI and MSR partitions on it (boot either a Windows install iso ->repair windows system .-> command mode or winpe) , create via DISKPART some VHDX files for Windows and for other OS'es another partition), attach the vhdx file and use /dism Apply-Image and bcdboot to create the boot mgr.

follow the thread I posted on theW10 Forums for details and screenshots. This one shows a VM on booting will show a boot menu to boot either into W10 or W11. Only ONE VM needs to be defined on the HOST.
Running several versions of Windows from the SAME VM config - Windows 10 Help Forums
Hi folks Delving a little more into VHDX files (Physical ones) it seemed to me that if you want to run various builds of Windows on essentially the same PC as Virtual machines - there's no reason why the Virtual machine boot couldn't offer the boot choice

Cheers
jimbo
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