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Hard disk spins during sleep

Somehow even when the screen is black my hard disks keeps spinning which is surely likely to wear it out sooner rather than later.

Any idea what I can do?

iMac (21.5-inch Mid 2010), OS X Mountain Lion (10.8.1), iPad 2 32gb WifI + iPhone 4 32gb

Posted on Sep 10, 2012 3:18 PM

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15 replies

Oct 31, 2012 12:33 PM in response to Shawdavid

Anymore word on this, I posted a similar question with no answers. What did you find out? Anything? I noticed when I was taking a nap that it was in sleep, but made the little purring sound and slight spin, which, to me, "oh mine has been doing it for 5 years" isn't a great answer to hear. Did you ever find out what was causing it, and were you able to resolve the issue? I paid 1800$ for this machine and i'd like it to run properly without having to tweak this and tweak that.

Oct 31, 2012 12:50 PM in response to milew66

nmilew66,


Your machine is running properly! The HD will continue to spin and will be more reliable because of that. What tends to kill HD's is startup and shutdown therefore letting the HD spin (as it should) will lengthen it's life span. Kind of like what kills brakes and engines on cars which is stop and go driving. If you do lots of highway miles the brakes and drivetrain will last much much longer


Leave your machine alone and under most circumstances it will last a very long time.

Nov 2, 2012 9:54 AM in response to rkaufmann87

"Your machine is running properly! The HD will continue to spin and will be more reliable because of that. What tends to kill HD's is startup and shutdown therefore letting the HD spin (as it should) will lengthen it's life span. Kind of like what kills brakes and engines on cars which is stop and go driving. If you do lots of highway miles the brakes and drivetrain will last much much longer


Leave your machine alone and under most circumstances it will last a very long time."


Can anyone vouch for this? I have heard the exact opposite in other forums, people say when it is in sleep mode, it should NOT spin at all.

Nov 2, 2012 10:57 AM in response to rkaufmann87

Thanks, unfortunately I do not have applecare, although still have time on my warranty. It ***** that no one can answer a simple question for me over the phone. I pay 1800$ for a computer that is supposed to be top of the line, 6 months later it is talking in its sleep, and they want 19$ to answer a question over the phone. I really do not want to lug my 27 inch computer an hour away if this can be resolved another way.


Are there ANY doagnostic/hardware tests/software that I can buy or whatever to run and let me know if the HDD has errors? I have windows installed as well via bootcamp. If I run a hard drive scanner on that side, will it only scan that partition?

Nov 2, 2012 11:24 AM in response to milew66

milew66 wrote:


Thanks, unfortunately I do not have applecare, although still have time on my warranty. It ***** that no one can answer a simple question for me over the phone. I pay 1800$ for a computer that is supposed to be top of the line, 6 months later it is talking in its sleep, and they want 19$ to answer a question over the phone. I really do not want to lug my 27 inch computer an hour away if this can be resolved another way.


Are there ANY doagnostic/hardware tests/software that I can buy or whatever to run and let me know if the HDD has errors? I have windows installed as well via bootcamp. If I run a hard drive scanner on that side, will it only scan that partition?

OS X has exactly what you need built into it, OS X is a much more efficient system than MS Windows.There is a utility called Disk Utility built into the system, to repair the HD and check for it's overall health boot in the Recover Partion, to do this when you hear the startup tone hold down the OPTION Key and choose the Recovery Partion, then choose Disk Utility and you can run Repair Disk. If it has errors (which I'm almost certain yours does not) they will be reported. I would also recommend you run Repair Disk Permissions and also read:


http://support.apple.com/kb/TS1448


BTW as long as your machine is less than 1 year old you can still buy AppleCARE, if you still can then I'd strongly recommend you do so. If for no other reason it will provide you 3 years of peace of mind and you can call AppleCare support if you have anyquestions. If your machine is covered by AppleCARE and requires a part replacement 3x Apple will replace your machine. In addition if you live within 50 miles of an AASP you can request on-site service.

Nov 2, 2012 11:50 AM in response to milew66

As I said OS X has all the utilities already built in. For 99% of the users out there no third party utilities are necessary. However if you still don't believe me you can invest in Disk Warrior and/or Drive Genius.


BTW you can easily find discounts on AppleCare by buying from authorized resellers such as Amazon and LA Computer Company. Doing a little shopping could save you a lot of money. I just looked on Amazon and there are sellers listed it for as low as $98! However of course it's your call, to me $160 for 3 years of peace of mind is well worth it.

Nov 2, 2012 12:09 PM in response to Malignance

What is the nature? Things go wrong that you do not know if they are acutally wrong because there is no other software to test besides what is pre configured with the machine? I mean, If I had to rely on Microsofts windows defender for protection, my pc would have died years ago. I just want to know if there is any other software, for mac, that does not come with the computer, used for scanning and reparing disk errors?





Thanks, and I like the mac for the most part, it is the support I am not a fan of

Hard disk spins during sleep

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