OS X Server: AAAAAARG or, "No Mountable File Systems" = bad RAM

I started getting "No Mountable File Systems" SOMETIMES when opening a DMG.

So, I did what I usually did when that sort of thing occurs. I start hammering the system. In this case, memtest reported a RAM failure. Also it reported the same failure in single user mode which really means RAM is bad.

Removing the RAM, reseating, and even different RAM slots all had the same effect.

Check out memtest and rember.

If you're having goofy problems, check your RAM. You will not get any sort of warning. Microsoft is nice enough to provide a utility for this.

You have to burn a CD for it, but not a big deal. Then you just reboot from that CD.

Apple, you could learn something here.

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