IMac 21.5 hard drive fan increases speed after HDD Replacement
The hard drive on my iMac 21.5 failed two months out of warranty, so I decided to replace it myself. I replaced the drive with a duplicate of what was already in the iMac, which is a Seagate 500GB Barracuda 7200. The replacement and restore went well, however, now the hard drive fan slowly increases speed during operation, until I assume it reaches maximum RPMs. The increase in fan speed happens regardless of how busy the unit is. This is not particularly a problem, but the noise at maximum RPMs is annoying and I assume the life of the fan will be shortened. I ran the Apple Hardware Test and received the error "4SNS/1/40000000:TH00-9.000" which I've seen from another post that this may or may not indicate a problem with the thermal sender unit on the HDD. During installation I was careful to verify the proper orientation of the thermal sensor cable, so doubtful that is the problem. Is there a way to definitively determine whether the thermal sensor is bad on the HDD, or do I need some type of Apple-specific firmware installed on the HDD?
Beginning in late 2009 Apple began using HD's that had the heat sensor integrated into it, if you are absolutely positive your replacement drive has an integrated sensor in it then your problem might be solved by doing a SMC reset. If you haven't done one before here are the instructions:
SMC RESET
• Shut down the computer.
• Unplug the computer's power cord and all peripherals.
• Press and hold the power button for 5 seconds.
• Release the power button.
• Attach the computers power cable.
• Press the power button to turn on the computer.
PRAM RESET
• Shut down the computer.
• Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
• Turn on the computer.
• Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
Similar Messages
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As I stated my late 2009 iMac 27 inch hard drive failed and is being replaced.. I am being charged as machine does not qualify for the call back program..call backs are on 2011 machines.. However i am in shock that my segate internal iMac hard drive failed in less than two years.. are there others with similar issue? Also when I get machine back will new hard drive be stable .. How do I make sure my working environment is reliable.. I have all my data and work backed up and will be able to rebuild my system but I really do not want to have to go through this down the line again.
Just to update everyone and maybe help people down the road .... It has been a week of **** .... I may have finally solved a problem that I have seen a ton of people in all different types of discussions around the world having trouble with ...... I am going to upload some pictures of what I was getting in the beginning and it came out of no where .... I had the random pixel problem with my display and to make a long story short I came across an article two days ago regarding internal temperatures and fan speed ...... I kept reading about apples approach which is not the point ..... More importantly I dug deeper into temperature control and fan settings .... I discovered all kinds of software and there is only one in my eyes that can help anyone dealing with this display problem .... I will be honest, I do not have the money right now for anything extra and am barely getting by and that is why I kept at it ... I figured keep trying different things because a repair is out of the question ... http://www.crystalidea.com/macs-fan-control - This program has solved my problem - I get to adjust three internal temperatures inside my Imac and slowly but surely as the temperatures remained constant the display is fine .... Like new again .... I cant believe it ..... Turns out the ATI Radeon HD 4850 512 MB graphics card gets very hot causing it to not do what it is supposed to ..... Anyone that has any questions do not hesitate to contact me ...... I am going to upload some pics .... They are not that clear but if you are going through this you will recognize the images for sure - There was so many more variations but this should help out - Thanks to everyone that takes the time out to help people on this support site .... I want to send a shout out to The Art Of Sound .... He is the most knowledgeable Apple person I have ever come across and I am an Apple user for 20+ years
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IMac i7's Hard Drive is 56 Degrees Celsius?
Hi. The newscast report it's around 32 degrees celsius. The iMac i7's hard drive using SMARTReporter says the hard drive is at 56 degrees celsius with just Safari and Mail launched. Will the hard drive be damages (and the iMac itself). It's not really hot, it's a cloudy day. I have a western digital Firewire Time Machine backup. The iMac was bought last March 2010 only, 4 months ago. Nothing's blocking the ventilation. Would this iMac be ok?Please advise. Thanks in advance.
Gbu.That's very hot, and I don't know if your fans are ramping up or not. My guess is probably not; I have no idea how hot things have to get before the fans get off their minimums. I noticed my drive was getting up to 51C and the HD fan was still running at its slowest. You can install a little fan program which will allow you to set minimum fan rpms. I have 3 different settings in increments up to around 2K for when things get really hot.
In very hot weather I allow the computer to sleep and cool off more often.
SMCFan Control
http://www.eidac.de/
For ten bucks you can also install Hardware Monitor, which will give you readouts of mostly everything, including the fan rpms. It is very accurate.
http://www.bresink.com/osx/HardwareMonitor.html
Message was edited by: WZZZ -
My computer is part of the iMac 1TB Seagate Hard Drive replacement program. What is the best external modem to use in order to back up my files prior to me dropping off my computer.
As Babowa says, get an external disk. You should have one for normal backups anyway.
Actually, I'm a strong fan of having multiple backups. 3 copies including the original, 2 different backup formats, and 1 backup off-site.
And when you have your iMac in for service, if you have just 1 backup at that point in time you have just 1 copy of your data. I get paranoid about my data.
But if you are just making 1 backup, I would use SuperDuper (free for a full clone, and extremely good software, as is Carbon Copy Cloner, but it is not free anymore).
And then I would "Boot" from the clone, to make sure it was a good clone.
Booted from the clone, I would then use Applications -> Utilities -> Disk Utility to zero the original disk, as suggested by Babowa, so that when they replace the disk, the original disk containing your data is not in the hands of strangers. A single pass of zeros is more than good enough as an erase, as the chances are no one is going to spend the money needed to try and read the erased data. It is not like you have any super secret data, just stuff you do not want the casual data theif to get. You will find the zeroing options under Disk Utility -> Erase -> Security Options
Just make sure you actually boot from your clone before erasing your original. And if you are paranoid like me, make 2 backups, then erase the original :-) -
I HAVE 2.4 IMAC 24" THE HARD DRIVE IS LOCKED AND I CANNOT RUN THE CD FOR REFORM AND RUN THE COMPURTER
The thermal load difference between a 5400 and a 7200 RPM HDD is negligible. Mine was custom ordered with the (then available 200GB 7200RPM) fast HDD and the temperature felt from the HDD (under your left palm) as well as the reported temperature (using iStatPro to check) is well within operating parameters. Heck, the CPU or the SuperDrive get hotter!
Note that in HDD upgrades, you have two choices still: size (current record is 1TB@5400RPM) or speed (the 500GB@7200RPM mentioned in this thread). Apple won't do it, so you will either DIY or have to go to an AASP and pay. Task isn't difficult, except for the part where you take the top case off without damaging it. Major PITA along the front edge. -
I have my itunes stored on my external hard drive of my IMac.
I have started to put my Digital Copies to my IMac with external hard drive, then on my MacBook Pro I can see the movies, but if I close out my IMac, I can't access my movies on my laptop???
Can anyone help me out here? Thanks.I have my itunes stored on my external hard drive of my IMac.
I have started to put my Digital Copies to my IMac with external hard drive, then on my MacBook Pro I can see the movies, but if I close out my IMac, I can't access my movies on my laptop???
Can anyone help me out here? Thanks. -
I have an iMac 21.5 inch purchased in 2011 with a failing 1TB Seagate hard drive. Can I get a replacement hard drive thru the Apple Replacement Program? I did purchase the Applecare Plan but it expired in Dec. 2013.
FWIW, if you purchased the iMac in 2011 and purchased Applecare, you are covered for a total of 3 years. You mentioned yours expired in December 2013 - that cannot be unless you bought yours in 2010. If you bought it in December 2011, you should still be covered until December 2014 - if so, contact Apple/make a Genius Bar appointment quickly so the replacement is covered by the warranty. The hard drive replacement program might have expired, but as long as you're covered by Applecare, a drive replacement is covered.
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When ever the power goes out or I restart my iMac the external hard drive that is used for backups by Time Machine is dismounted and all backups are gone. I can reselect it and it will start working again, but I am worried if the iMac hard drive should fail will I be left without a backup ?
fzgy wrote:
"Mac OS X can't repair the disk. You can still open or copy files on the disk, but you can't save changes to files on the disk. Back up the disk and reformat it as soon as you can."
It's possible a heavy-duty 3rd-party disk repair app can fix it, but they're expensive (DiskWarrior is about $100), and there's no guarantee it can do it.
Am prompted to reformat but I don't have a good understanding of what this means and how to do it.
That will erase it. See Time Machine - Frequently Asked Question #5.
It sounds very much like the disk is beginning to fail, although it's possible there's a bad port, cable, connection or power supply (if it has its own).
I'd suggest getting a new one, and using it for your Time Machine backups; once you have a good backup there, reformat the old one (and select Security Options to write zeros to the whole drive -- if that fails, you know the drive is toast). Use it for secondary backups, per FAQ #27. If it has failed, get a second new one for secondary backups. -
24 imac screen freeze hard drive reinstall&hardware test ok
24 imac screen freeze hard drive reinstall&hardware test ok
Do you have a question? If so please ask it and provide more information. If English is not your native language please use Google Translate .
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My iMac Seagate 1T hard drive crashed. I replaced it with a Western Digital 1T hard drive. Where can I get the Lion OS?
The iMac comes up with a ? in a folder, even after starting with Option/Command/R keys pressed.
Please help.Call Apple to purchase replacement discs or order a copy of Snow Leopard from Apple's Online Store. Follow these instructions:
Drive Preparation and Install Snow Leopard
1. Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
7. When completed quit DU and return to the installer. Install Snow Leopard. Once you boot from Snow Leopard you should open Software Update and install all the available updates required. After you complete this and restart the computer open the App Store application in the Dock or Applications folder.
8. Sign into the App Store with your Apple ID and password. Purchase and download Lion.
9. After Lion's installer downloads, install Lion. -
Replacing my iMac 1TB Seagate Hard Drive
I have to replace my iMac 1TB Seagate Hard Drive. I need to use Time Machine to restore my Mac- anyone have a step by step procedure to complete this?
Welcome to the Apple Support Communities
When you get your Mac after Apple has replaced its hard disk, they can give it to you with a blank hard disk or with Lion installed. I recommend you to make a clone with Carbon Copy Cloner instead of the Time Machine backup. It will make shorter the process of reinstalling everything again.
If it has got Lion installed:
1. Press Command and R keys while your Mac is starting and open Disk Utility.
2. Select Macintosh HD in the sidebar and go to Restore tab.
3. Drag your external disk to Destination box and press Restore.
4. When the restore finishes, restart your Mac.
If the hard disk is blank, it depends if you bought your Mac with Snow Leopard or Lion. If you bought it with Lion, do the same but pressing Command, Option and R keys. If you bought it with Snow Leopard:
1. Insert the OS X disc and press C key when your Mac starts.
2. Go to Utilities > Disk Utility and select Macintosh HD in the sidebar.
3. Go to Restore tab, drag the external disk to Destination box and press Restore -
Have an old purple imac with dead hard drive. Have removed drive, and would like to replace drive, but cannot determine which model imac it is, since the drive is not working. It's at least a 350, because it's slot-load. This drive is a Quantum 30 GB AT Fireball Plus AS, which i do not think is the original. As it is only used for word-processing these days, don't need 30 gb, but don't know how to determine which drive would be ok.
Thanks for any suggestions.
Carolyn
imacs, ibooks, Performas, Quadras, Os X Server Mac OS X (10.2.x) OS 7.1 to 10.2Your iMac can use any 3.5" IDE/ATA desktop drive. The iMac will recognize up to 127 GB of drive space.
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I rceived a 2008 Imac with erased hard drive. They gave me the two install discs but it keeps coming up cannot install OS X on this computer.
Is there anything to do. Thanks hopefullyWell, Apple would probably point out that what you are trying to do violates the EULA.
Technically speaking, however, the issue is that the install/restore DVDs that ship with Macs do not carry all the drivers, or even all of the various versions of libraries that support all of the various models of Macs. The come-with-your-Mac disks are different than the retail versions of the OS (also, the come-with-your-Mac ones bundle iLife, which the retail ones don't).
Because the come-with-your-Mac disk contains only the drivers specific to that generation and model line of Mac, it contains a stub of code that verifies that your hardware matches the driver set on the install/restore DVD.
Your friend has a different model of Mac, with different hardware, so her install/restore disk won't work in yours. Solution: go get the retail boxed version of Leopard. -
G710 hard drive read/write speed
Hello,
I have a brand new Ideapad G710 with 1TB Serial ATA 2, 5400rpm with advertised speed of 3 Gb/s (= 384MB/s).
I am running Windows 7 ultimate x64 with SP1.
When I test hard drive read/write speed (I used CrystalDiskMark) I get results of about 100MB/s, which is 3-4 times slower than it should be.
I am not running any resource heavy applications (Resource monitor reports Disk I/O to be 0 most of the time in idle state). I have 3 partitions, each with 16-32GB paging file size and all are >90% empty. All partitions have been defragmented before testing.
Is this normal? Are there any lenovo drivers or utilities than I might be missing or that can slow/speed this?
Solved!
Go to Solution.hi Daew,
Welcome to the Lenovo Forums.
The results that you got while running CrystalDiskMark is normal. The SATA 2 (3Gb/s) that you mentioned is actually the SATA interface support, not the actual read/write performance.
If you have a Seagate HDD (eg. ST10000LM024), check these specs
From the above specs, the unit has a cache that has a read/write max speed of 145 MB/s but there are environmental factors and power requirements to get this speed (eg. read/write speed on AC power is differente from battery power).
AFAIK, if this is the specs that is design for this drive, there's no way to speed it up.
If you're planning to upgrade in the future though, you can get an SSD for faster read/write.
Regards
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I did backup from my Imac to external hard drive, how can I unzip that backup to my mac
I did backup from my Imac to external hard drive, how can I unzip that backup to my mac again
It may be Time Machine, but Time Machine doesn't store backups in .zip folders. Open Finder and select your backup external disk in the Finder sidebar, under "Devices". If you are using Time Machine, you should see a folder called "Backups.backupdb".
If you are using Time Machine and you want to restore a full Time Machine backup, there are different methods depending on the Mac OS X version you are using. Open > About this Mac, see Version and tell me what version you are using
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