Spent time repairing computers in college. Replacing the disk drives was a very common task for lab computers. I managed to spend 3 hours assembly and disass

Spent time repairing computers in college. Replacing the disk drives was a very common task for lab computers. I managed to spend 3 hours assembly and disassembling this one machine before finally figure out that my test floppy had gone bad. Another one was this student whose assignments were constantly being erased. After watching him go through the motions of what he was doing, I asked him if his bracelet was magnetic. Problem solved.