Beyond frustrated trying to install 2019 Server OS on new gen2 hyper-v VMs. This seems to be a common complaint, but none of the fixes I've found, many of them here, are working:

- Hypervisor is run as administrator
- DVD points to a 64-bit UEFI ISO that I have confirmed bootable by creating a bootable USB drive from the ISO and booting the UEFI host server from it
- DVD is at the top of the boot order
- Secure boot is disabled
- Network adapter has been disconnected from the VM
- Changed location of DVD to "0: and HDD to "1"
- Reset permissions on the ISO, giving Everyone full control
- Shortened the ISO filename

When "Install an operation system from a bootable image file" is selected during new VM creation, and pointed to the ISO copy on the host's C: drive, nothing happens.

No "Press any key to boot from CD/DVD" prompt is displayed though it (shouldn't matter, with the DVD at the top of the boot order and no alternate bootable options). Tried the "hold a key down during boot" fix for displaying the prompt with no effect. The following boot summary is instantly displayed (no error messages, no errors in the Hyper-V event logs except "failed to load an operating system"

Virtual Machine Boot Summary
1. SCSI_DVD (0,1)
The boot loader did not load an operating system.
2. SCSI_Disk (0,0)
The boot loader did not load an operating system.
3. Network adapter (00155D141501)
A boot image was not found.

Ideas? I've burned hours on this, and the server needs to be deployed for customer this week and data transferred over the New Year holiday.

RouterOS is linux based! Will not boot on Gent2 because does not support uefi!