Am I not sweating it because I have a nightly backup plus Time Machine?
You bet your ass I’m not.
N.B. Using a folded up piece of scrap paper to force Mac to boot [from optical drive | from internal HDD | without extensions] so you can [continue using left hand | go get more coffee | play Crystal Caliburn | ogle photos of Bettie Page on CompuServe] is ©1993, Merlin Mann. All rights reserved.