A step-by-step guide to fixing a black screen on MacBook Pro or an external monitor.

I'm running Snow Leopard v10.6.8 on a Mac Book Pro 13" that I received for Christmas last year. Everything is fine with this computer but a couple weeks ago I went to open Disk utility because I ...

TL;DR - every external HDD gets "the volume /dev/rdisk[X]s1 [with UUID etc] was found to be corrupt and needs to be repaired" (it doesn't repair it). Even though those disks were fully erased and ...