While booting a Hyper-V virtual machine, if you get No operating system was loaded error, this guide will help you fix the issue.

To fix An operating system wasn’t found error on Windows computers, first check if the Disk Type is GPT or MBR, and then follow these steps.

If the previous steps did not fix operating system error in Warzone 2.0, you also need to make sure that Modern Warfare 2/Warzone 2.0 game is not set to run in compatibility mode.