Specs: Mac Pro, running OS X 10.6.6. 9 GB RAM. One 1TB HD (boot drive), 3x1.5TB HD, all internal bays. I use the computer for heavy photo editing, ftp, and general web surfing.
It is about 2 1/2 years old. The boot disk has about 100 GB of free space; two of the 1.5 TB drives are 95% full. The last one has about 800 GB of free space on it.
Today, I restarted my computer after some general slowness. I noticed a Console message regarding some problem with VM or a swap file. Unfortunately, I don’t remember the exact message, and I’m not at my desktop at the moment. Upon reboot, I noticed one of my full hard drives (simply named Internal Bay 2) no longer appeared on my desktop. Odd. I go into Disk Utility, and it’s there, but greyed out. S.M.A.R.T. status is verified, and says the drive is OK. I try mounting it, and Disk Utility hangs.
I run Disk Warrior, and Disk Warrior also sees it, no problem. I fix the directory, it shows me all the folders on the disk after the verification process, so all my data seems to be there. However, it, too, doesn’t remount the drive (I’m not sure if Disk Warrior normally mounts unmounted drives or not after completion of the directory optimization.) So I reboot the computer. Still no drive.
I shut down the computer, and it hangs on the blue screen at the shutdown, with that spinning little icon (not a beachball, but the startup and shutdown icon–like the one that appears below the Apple logo as you’re starting up the system.) I wait about two minutes, grow impatient, and force a shutdown by holding down the power. I remove and reinsert the drive. No dice. Shutdown. Same weirdness, had to force it.
I remove the harddrive, stick it in an enclosure, and connect it to my MacBook Pro. It’s fine–it shows up, data is there and accessible. (The disk is backed up, anyway.)
I haven’t done any general maintenance on the boot drive, and Disk Warrior says that 34% of the directory is out of order, so I rebuilt the directory, and am currently running a file system check on the boot drive. After removing the hard drive, the desktop didn’t seem to have any problems restarting (although I only tried “restart” and not “shut down”–I’m not sure if the two routines are significantly different.)
My next step is to stick another hard drive in the empty slot and see what happens. I’m not going to be able to get around to that until tomorrow.
In the meanwhile, how concerned should I be (like I said, my data is backed up), and what should I be looking out for? Does this sort of behavior sound familiar to anyone? First, I get that odd paging file log entry, then the drive won’t mount internally (even though it’s recognized by Disk Utility and shows up fine in a hard drive enclosure), and then the computer won’t shut down properly. I did notice today that the computer seemed to be running slower than usual. Is this just a run-of-the-mill drive issue, or could it be something more serious?