Dave's REALLY Close Call...

Regarding past work fuckups - when I was new at a cloud/sysadmin job, I accidentally overwrote the MBR (first 512 bytes exactly) of a production server's data drive. Oops! Since this was linux, there was no immediate affect, but I knew if the server was to later reboot, it would be screwed.

The fix? Copy the MBR from another identical server's drive! I did this then walked away. And be amazed, it never did become a real problem!