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I have 4 Hard drives in my Mac Pro, which are all connected directly to the motherboard using the supplied cradles. One of them is constantly ejecting itself for some reason, and i get a message saying the disk was not ejected properley. I need to shut the computer down and start it again to get the drive to show. If i do a re-start it still wont show, i have to actually shut down first.
Any ideas?
Mac Pro, Mac OS X (10.7.2)
Could be a bad connection or a sign the drive may be failing. What happens if you swap it with one of the other drives? At least this way you can determine if it's the drive or the slot.
Pauly78, I'm having the same problem as you are -- one of my internal HDD's spontaneously ejects itself and I have to powerdown/up to get it back again. Did you solve your problem yet? I'm looking for all the help I can get. Thx.
I e tried swapping bays and it's still the same, sometimes it ejects aft an hour, sometimes it takes 12 hours. But I always have to shut down the mac and restart it again. I really don't think this can be a hard drive issue - surely if it was a defective hard drive sometimes on restarting the mac it wouldn't work..
So in answer to your question. Kcannon, as of yet, no fix, just constantly shutting down and starting back up. I'm thinking of just buying a new one and transferring all my stuff to i and solving the issue, the only reason I'm hesitant is cos the HD isn't really that old.
surely if it was a defective hard drive sometimes on restarting the mac it wouldn't work..
That will begin happening soon. The criteria for mounting at Startup are low. The criteria for staying mounted are higher. Make sure you have backups of that drive, as it WILL fail suddenly, and probably never work again.
"Any drive can fail at any time."
I'm tending to agree with Grant, that this may be a hardware issue. I've tried a number of potential solutions I found online, none of which made any difference. In my case, the spontaneous ejects have always occurred when copying a large file to (not from) the drive in question. I have an identical drive in the same machine which seems rock solid in similar circumstances. I'm going to start using the 2nd drive in place of the 1st (possibly failing) one and see what happens. After a good backup, of course! Will report results.
The 2nd drive worked w/o a hitch while the 1st drive continued to eject. I'm satisfied this is a hardware problem and am going to exchange the bad drive, which luckily is still returnable.
kcannon wrote:
...I'm satisfied this is a hardware problem and am going to exchange the bad drive, which luckily is still returnable.
Before you exchange it, be sure to wipe it clean. Since writing to the drive is what's related to ejection, let's hope you can zero it out.
And just out of curiosity, have you checked that drive's temperature?
Good point about possible problem wiping the drive. We'll see how that goes after I have the replacement in hand.
The temp of the apparantly failing drive is 81 degrees F and the identical one that's working is 79 F.
Following up on this issue. I purchased and installed a replacement drive, with assurances from the retailer that I could return the original "defective" one. Long story short, the new drive failed in the same way as the other, and in the end it turned out it was the data cable that was defective. I put a new cable on the original drive and it now works perfectly and throughput is excellent. Returned the replacement drive I had bought. Interestingly, the bad cable was a relatively expensive one, labled "SATA III," while the one that's working now is a cheapo brandx I had laying around. YMMV, but this is what worked for me.
Internal Hard drive ejecting
