Hm... Let's see how I learn format.
I broke the 512MB hardddrive by dropping it accidentally. I bought a replacement 1GB harddrive and plug it, expect it to work when I turned on the computer, except that it didn't. I had a MS DOS 6.2 3.5 inch floppy disk so I booted of that and start typing in HELP and read thru all the commands. Found FDISK and FORMAT. Ran both and then I can use the harddrive. I was 13 and this was the time without internet, smartphone, nor instruction from anything or anyone. I just figure Operation System must have the things I need to make the harddrive work.
First time I had virtualization experience was watching someone using Windows inside a Mac at school, I think I was 15.