I think my first drive that dad got for me with the 386 DX-40 was a 30MB Conner drive.
I did not get into the innards of a computer until my 486DX2-66 died and I opened it up to see if I could fix it. A corner of the mobo near some port had been covered in dust and mold and I think that caused a short circuit. I cleaned it up but it still wouldn't run. Then I did something truly stupid. I plugged the 220V naked cables directly in the mobo. A capacitor launched into the air and got incinerated in front of my eyes. If I had been even more stupid to have been looking at the mobo from directly above, I most likely would've died from a serious injury or badly disfigured.