Well the garage lost all power due to a wire pack that was spliced 4 ways in the attic and held with electrical tape. There weren't even wire nuts and some of the wires just lost contact enough to kill the power (and start a fire, we were lucky that didn't happen!)
So I begged and pleaded with the electrician to replace the 20ft run of the only 2 wire electrical in the house to the junction box that replaced the other end, which was wire nutted and outside between the house and the garage.
But lo, there was still no ground in the garage. Through previous "what the heck is going on?" inspection we had a pretty good idea of where the next splice from hell was, but as it's a rental and he was tasked only with restoring power he was (ahem) powerless to do any more.
I was just thankful that A) we didn't have a fire and B) I knew there was a good ground going all the way INTO the garage, I just couldn't figure out how it got in, or where it turned into multiple ungrounded wires.
After prying apart 3 walls and some moulding outside, I was convinced it was behind a wooden section which I cut out and found this little rats nest:
"Gee, think this might be your problem mister?"
Another junction box and an outlet later (can't have to many outlets) I had GROUND in the garage! Now I can shore power my SMB without leaving the kitchen window open and going under the garage door!