We are going to install an emulator (Windows 10X Emulator) inside another emulator (Hyper-V), which needs nested virtualization. If your computer is not on Windows 10 Insider builds, you will ...

KB5049981 is the first Patch Tuesday update for this year, and Windows 10 is left high and dry with no new feature additions.

you need to be able to boot from it on your old PC where you want to install ChromeOS Flex. If your PC runs Windows 10, the easiest way to do this is to use the Advanced startup options.