When my iMac 27" is in sleep mode I have noticed that the hard drive spins up very regularly every 4 or 5 minutes. Also when placed in sleep, the monitor takes about 30 seconds to go black. It also wakes on its own for no apparent reason. No new software has been added, only normal updates, running Lion. Time machine backup is done every couple weeks.
View 5 RepliesI just had the original 300 GB hard drive fail in my aluminum 24" inch iMac running the latest update of Leopard. I wasn't able to save it using diskwarrior (diskwarrior said it was some sort of mechanical failure) but I was able to recover most of the data from it by booting from an external hard-drive.
So I went out and purchased a brand new Western Digital Caviar Black 1TB drive. The install went fine, it found the drive partitioned it and installed Leopard successful. Then is crashed and disappeared when I left it alone to run all the software updates. I came back and the computer was stuck on "Restart Required" after downloading all the updates. I went to hit restart now, and the system just hanged, wouldn't do anything. So I hard powered down the system and restarted it. It came up with nothing, just stuck on the White Screen of Death. So I plugged the external drive back in and booted from it. Mac OSX couldn't find the drive and diskwarrior would crash if I tried to run it. I tried to boot up from the OSX start-up disk and it couldn't find the drive either.
So I took the case apart and made sure all the connections were solid and the drive was mounted correctly. Everything looked fine so I plugged it in and it started up fine. Finished the updates and the iMac ran great.
So I thought maybe it was overheating, so I've installed smcfancontrol and started to monitor the temp of the drive. I also took the mac apart again and sucked out any dust in the fans or vents. The drive never goes over a 105 F, so it doesn't seem to be overheating.
However, this is where the problem is consistent: everytime the iMac goes into sleep mode, it crashes and the iMac is unable to find the hard-drive again. Unless I unplug it completely for 5 minutes or so. Once I unplug it, it finds the drive and operates like a champ.
I think maybe there's an issue powering the drive back on? Anyone have any ideas?
And my follow up posting later that day:
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So I ran some tests just to see if was an overheat issue, hard drive malfunction, or sleep issue. I decided to start encoding a video, pulled up Word, Power Point, Excel, started downloading all 6000 mail messages off my server (I never delete my e-mail :-/), also started installing iLife 09, and pulled up a bunch of webpages in Firefox with multiple tabs.
However, I shut off all sleep mode options on the hard drive. I let it run for an hour and came back. Everything is fine, hard drive isn't locked up and smcfancontrol shows the hard drive running pretty hot (115 degrees) but not so hot I'm worried. So it's definitely something to do the hard drives going into sleep mode and not powering back on. It's also weird that I have to leave the computer completely unplugged for 10-15 minutes before the drive is recognized again.
So turning off sleep seems to be my work-around, however, this shouldn't be a long term solution. I'm worried that there is a bigger issue with the iMac, but I'm not sure what would cause this. I've been a PC guy for years, this was my first Mac, and honestly I don't know enough about the inner workings to narrow this down. I would assume this would have to do with the motherboard in some way? But I'm not sure how you would even test it.
I just got a new Mac Mini, and I notice that when it's in sleep mode, the hard disk is constantly spinning up and then spinning down again. It spins down roughly every thirty seconds, the power light starts blinking in the "I'm sleeping" pattern, but then the drive spins back up in a matter of seconds and the light is on constantly until the next spin-down. I've tried turning off the network, disconnecting the display, fiddling with the Energy Saver settings, quitting all programs, all to no avail. All updates are installed.
Info:
Mac mini, Mac OS X (10.7.3)
Is it possible to have an external HDD connected to an iMac or Mac Mini on a regular basis? I have a Power Mac G4, and it's always had issues with going into sleep mode when there is any external storage connected via the USB 2.0 ports (and I've put in replacement ports to try and remedy this, to no avail). The main problem is that once the system wakes up, it thinks you've improperly removed the device. Apple told me, way back, that this was normal and to just eject all external storage before going into sleep mode. Which is a pain, but looking at a new desktop Mac I would like to just get the tiny, base HDD and use a beefy external for all my media - unless this is still an acceptable norm with new macs.
View 1 Replies View RelatedLately I've noticed that whenever I put my Mac to sleep, I lose a few megabytes. At first I didn't think anything about it. Until one day I let sleep for a while I was doing something, and came back to, and saw that I had lost about 300 megabytes. While it was in sleep, no applications were running and nothing was downloading. My mac is Macbook pro, 3 years old, 120 gigabyte, 2 gb of ram, 2.33 Ghz Intel Core duo, Model Identifier: 2,2, and Serial Number:W86481HGW0H Right now it's running leopard. I'm about to upgrade to Snow Leopard. So why would it lose this hard drive space when it's in sleep mode? By the way, I bought it used one year ago. So I've only had it a year. I haven't downloaded anything from any untrustworthy websites. I only download things from trusted sources(i.e. itunes.) Please help. Right now my only solution is to keep a close eye on it, and make sure that it does not go to sleep!
View 3 Replies View RelatedI put it on Craig's list so wanted to wipe the drive and figure I'd play around with OS 9 a little just for fun. While in OS 9 it prompted me to upgrade the firmware on the DVD-ROM drive. I thought that sounded like a good idea since it makes some terrible noises when a disc is in... anyway, I did the firmware upgrade and everything went fine. That's the only real change I can think of that might have contributed to this new issue.Anyway, after that I put 10.3 on it again (I had 10.4 on it before) and it wouldn't sleep correctly. Everything looks like its going to sleep ok, then the hard drive spins up, then back down, over and over again endlessly.
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Info:
iMac (27-inch Late 2009), Mac OS X (10.7.4)
My iMac is some 2 years old and have never had this problem before but twice in the last week it has failed to awake from sleep mode and I have had to hold the start button to 'wake' it up. It then goes through the usual procedure that transpires afte 'logging off'
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AppleTV 2, Mac OS X (10.7.3), I have an o2 router
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iMac, Mac OS X (10.4.9)
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iMac, Mac OS X (10.6.8)
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iMac, iOS 5.0.1
I have a macbook pro, running os X leopard. Whenever I bring it back from sleep the cd drive spins to read what's in it. If nothing is in it it makes 3 rounds of unpleasant noise, then stops. If it's got a cd it spins for a minute or two. Is there any way I can stop this? I know it's kind of a picky thing to complain about, but I've switched to Mac a week ago and it's the only complaint I have so far.
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iMac (27-inch Mid 2010), Mac OS X (10.6.8), 12 GB RAM
I'm having a problem with my PowerBook G4 where is goes into sleep mode at random times. Mostly when I am streaming video..or at times the fan comes on, it sounds super high then boom. sleep mode again. After hitting the space bar, it comes back on, but it'll happen again shortly after. I've played with the sleep settings
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Mac OS, Mac OS X (10.6.7)
my mac is hot even if its in sleep mode..
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iMac, Mac OS X (10.7.2)
I have resolved my MacPro sleep issue by removing the Seagate 320GB stock drive. For whatever reason, if that drive is plugged in, it reboots my MacPro when waking from sleep. I had setup 2 WD 500GB drives in RAID 0 as my boot volume and this was configured with Windows XP Pro for other uses.
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