I am currently using Ubuntu 20.04, but I still have my old PC with Ubuntu 10.04 installation, and I want to keep it available for occasional use (because there are some things in that version that worked good - and I'm used to the way they worked - and they don't work so good in the recent one). However, I don't want to keep the actual hardware, so I decided to convert the old Ubuntu 10.04 installation into a virtual machine and run it under my current system.
My current system is Ubuntu 20.04 64-bit, and the old one is 10.04 32-bit. What type of virtualization should I use? Do I need the full virtualization (I mean KVM - that was my first idea, as I already have some experience with it), or can I use something "lighter", ie. some container-based solution? I have no experience with containers, but as far as I understand, containers need to use the same kernel, so it seems to be impossible in my case? Am I right?
To clarify: I'm not asking about opinions "which virtualization is the best". I'm also not asking for any help with Ubuntu 10.04. I'm asking, if it is possible to run 32-bit kernel 2.6.32 (the one from Ubuntu 10.04) as a guest OS on current Ubuntu 20.04 64-bit kernel using anything "lighter" than full virtualization (mean: containers)?
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