Snow Leopard: Defeated

August 28, 2009 · Posted in Tech · 1 Comment 

After spending years professionally beating irrational computers into acting rationally again, it’s a humbling experience to almost get beaten by a simple software update. That’s not to say software updates are without their eccentricities, but you can at least count on the problems to begin either after the software has finished installing, or right in the middle (ideally at a critical and irrecoverable point). It’s not often that problems begin before the installation takes place, or so I thought until I was staring down Snow Leopard’s missive that “You cannot install Mac OS X on this volume.”

“Can’t, or won’t?” I thought, in my best Kevin Conroy voice.

The problem, it turns out, is somehow related to the destination drive’s partition map, about which a few theories are being floated by others who have been affected. I hear you, PowerPC veterans, exclaiming “Of course! He must have an Apple Partition Table. How 2006.” Not so fast: the issue affects the requisite GUID Partition Table, and while there seems to be a few different causes, you’re more likely to run into this problem if you’ve chopped up your hard drive for a dual or multi-boot machine, or say installed Fedora and added a 2GB swap partition.

At least the solution is simple: pop open Disk Utility and resize your destination partition a couple times. Whatever the reason, most users are back in business after this digital flexing. My computer understands that I’ve made a profession out of fixing far worse nightmares, and would have none of this quick fix nonsense. Disk Utility managed to ratchet up the difficulty level by arbitrarily hating the ext3 file system upon which Fedora was installed, and crashed whenever asked to modify the partition map.

My computer forgets who its dealing with: someone who keeps a full back up and isn’t afraid to erase the partition map. Long story short, the software is installed.