Back in the olden days, I had a junior dev ask me if he could learn ops, I said sure, I was just a hacker myself. He wrote a script to make sure the hard drive

Back in the olden days, I had a junior dev ask me if he could learn ops, I said sure, I was just a hacker myself. He wrote a script to make sure the hard drives in all the servers were good. A month or so later we rebooted a server and it wouldn't come back up. We finally rebooted another to see if we could learn something about the dead server. But it also wouldn't boot. Then to our horror we learned that the disk check script was writing and reading to the boot sector to make sure it was good. All of our servers were affected. Good times.