[yash101]

Ok. I thought by virtualization, you meant that you switch OSes by using a command or something. There could be some sort of host OS that requires a few MB of RAM, and barely any CPU. The RAM could be rationed and divided, or maybe even dynamic (One OS requires more RAM than other, so the one requiring more get's more)!

I use virtualbox. However, I haven't been able to boot Ubuntu on Virtualbox. My Processor is an i3-2367, so it isn't ideal for virtualization (lowest end processor that Intel manufactures, except celerons). My BIOS says that it supports virtualization. However, I am only able to boot 32-bit Debian! I should be able to install 64-bit Debian. I want to install Ubuntu, however, it always says that I have an i686 processor, so I am using the wrong kernel! What do I do?