virtualbox.org

I have used CentOS in a Virtual Box guest for many years, and starting today it no longer boots.

I get to the kernel select menu, but no matter what option I pick (even rescue mode) I get a black screen. I upgraded to latest version 6.1.16 with no difference, rebooted Windows, no difference (Windows 10 Pro, Version 2004, Buid 19041.572).

I figured it was time for a reinstall of CentOS anwyay and created a new guest and booted from latest available ISO CentOS-8.2.2004-x86_64-boot.iso. I get to the first menu where you can select between install and verification of installation media. No matter what option I pick, black screen.

The only thing I can think of is that a Windows update did something? I have verified that Hyper-V is disabled, but I no longer know how to trouble shoot any further.

Any tips?

Though I'm not sure why it became and issue right now, I got it to work by disabling WSL. I didn't use it anyway, but activated perhaps a 3-4 weeks ago.

WSL2 enables Hyper-v. WSL did not. You certainly have the former rather than the latter.