A bit of advice required, hard drive click and Harman Kardon speakers

Discussion in 'MacBook' started by myuserid08, Mar 19, 2008.

  1. myuserid08 macrumors 6502

    Joined:
    Mar 15, 2008
    #1
    1) Hard drive:
    Had my macbook for a few days now, but for some reason every so often I hear a slight "click" as though the hard drive had turned off, is this normal?

    2) Harman/Kardon
    I've had the HK speakers for a while now, they were connected to my iMac. Upon stating the iMac you would hear a couple of bangs/distortion whatever you want to call it. On my Macbook I have that all the time very minute or two, is this normal if so can it be prevented, settings etc?
     
  2. myuserid08 thread starter macrumors 6502

    Joined:
    Mar 15, 2008
    #2
    I know no one replied to this but after a number of posts on a few other forums and a lot of research I managed to find fixes for the above problems.
    1) The clicking hard drive is to do with Mac OS X over doing it on the head parking, if your drive clicks download and run "hdapm"

    2) The speaker bang is to do with Mac OS turning the sound card on and off, download and run "KeepSoundAwake 1.3". Although this was written for Mac OS 10.1 it still works with intel macs and Leopard.
     
  3. ChrisA macrumors G4

    Joined:
    Jan 5, 2006
    Location:
    Redondo Beach, California
    #3
    So now you disk will be destroyed if the computer is dropped (parking heads prevents this) and the sound card is drawing battery power full time even when there is no sound to play. It's a trade off but I kind of think the head parking is a good idea
     
  4. myuserid08 thread starter macrumors 6502

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    Mar 15, 2008
    #4
    Doesn't it park the heads when the macbook is switched off?
    It was parking the heads every few seconds which was ridiculous, plus this causes premature drive failure.
     
  5. skorpien macrumors 68020

    Joined:
    Jan 14, 2008
    #5
    Don't mean to hijack the thread but I'm having the hard drive head parking issue too. Every 20 seconds or so. My MBP is only 12 days old (since it's arrival in the mail) so it's not like it's had a significant amount of wear. Is this a regular thing to have the head park this frequently?
     
  6. myuserid08 thread starter macrumors 6502

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    Mar 15, 2008
    #6
    I dont know, its very confusing as apple dont seem to know either. I contacted the nearest apple repair center and they have told me to post the hard drive for replacement.
     
  7. priller macrumors regular

    Joined:
    Dec 15, 2007
    #7
    The heads are parked when its off & the SMS still parks the heads when it needs to.

    skorpien, has yours always done it or did it start a few days ago?
     
  8. skorpien macrumors 68020

    Joined:
    Jan 14, 2008
    #8
    I'm starting to think it's always done it but I just noticed two days ago. Considering it's only 13 days old it's very likely that it just took a really quiet room for me to hear it. In this other thread that I posted, I've come to understand that it's OSX that's parking the drive head regularly when it's idling (every 20 seconds or so) and that the Hitachi 7200 rpm drive is generally louder than others out there. There are programs that disable that feature, but honestly I'd rather live with the noise knowing it's normal than disabling it and running the risk of damaging my computer.
     
  9. priller macrumors regular

    Joined:
    Dec 15, 2007
    #9
    Hard disks are normally rated for between 300,000 & 600,000 load/unload cycles. Parking the heads every 20 seconds could cause your hard disk to fail

    You can check how many yours has done with http://www.apple.com/downloads/macosx/system_disk_utilities/smartutility.html
     
  10. skorpien macrumors 68020

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    Jan 14, 2008
    #10
    Pardon my ignorance... I've downloaded and ran this, but I'm not entirely sure what to look for and where. And how do I know if my drive falls within the proper range?
     
  11. priller macrumors regular

    Joined:
    Dec 15, 2007
    #11
    By Attributes click the show all button, Load_Cycle_Count is the one you're looking for.

    Code:
    193 Load_Cycle_Count        0x0032   098   098   000    Old_age   Always       -       4695
    That's my one month old macbook.
     
  12. skorpien macrumors 68020

    Joined:
    Jan 14, 2008
    #12
    Okay, that's good news. My MBP is only 2 weeks old and it's sitting at ~1980. So judging from your number, I shouldn't be worried right?
     
  13. priller macrumors regular

    Joined:
    Dec 15, 2007
    #13
    At that rate it will be at least 4 years until you get to 300,000, I'm not worried about mine unless the count starts increasing quicker. Other people have had over 40,000 load/unload cycles in a month.
     
  14. skorpien macrumors 68020

    Joined:
    Jan 14, 2008
    #14
    That's good to know then, thx. In 4 years I'll probably have an upgrade anyway, so there's definitely no reason to worry. Thx again for all the help.

    And to the OP: sorry for hijacking your thread. I hope this has at least helped you with your original question...
     
  15. myuserid08 thread starter macrumors 6502

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    Mar 15, 2008
    #15
    I just ran that program and it says my brand new 160gb hd is failing.
    Went to show all, and AIRFLOW_TEMPERATURE_CEL is highlighted in red, should I be concerned?

    Load cycles 2115 (48 hours use).
     
  16. priller macrumors regular

    Joined:
    Dec 15, 2007
    #16
    2115 in 48 hours sounds a lot, considering mines 4695 after 1 month ( almost 350 hours ).

    No idea about AIRFLOW_TEMPERATURE_CEL, but I'd contact applecare if it shows up as failing.
     
  17. myuserid08 thread starter macrumors 6502

    Joined:
    Mar 15, 2008
    #17
    Update:
    Received a new hard drive from Apple yesterday. They have replaced the original fujitsu with a hitachi. Maybe they have realized there is a problem with the fujitsu drives not being liked by leopard.
    Anyway I can now work in silence!
     

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