How to identify that you're running under a VM?

Question

Is there a way to identify, from within a VM, that your code is running inside a VM?

I guess there are more or less easy ways to identify specific VM systems, especi

Answer 1

I once ran across an assembly code snippet that told you if you were in a VM....I googled but couldn't find the original article.

I did find this though: Detect if your program is running inside a Virtual Machine.

Hope it helps.