2 Replies Latest reply: Jul 12, 2012 3:00 PM by Klaus1
star1248 Level 1 (0 points)

How to know when a hard drive has failed ?

iMac, Mac OS X (10.5.8), Imac A1076 20 inch G 5
  • rccharles Level 5 (7,090 points)

    Machine doesn't boot.  You experience strange crashes.  Gets wrong results.  Your harddrive is five or more years old.  Time to consider repacing it.   You do have backup?


    You may want to run these "standard" fixes if the problem persists.


    1) Check the amount of free space on your harddrive.  You should have a several gigs free.


    2) You should run disk utility

         a) verify the disk

         b) update your permissions.


    3) Try a safe boot.

        Shutdown your machine.  Hold down the shift key.  Poweron.  Wait awhile Wait awhile while you harddrive

          is being checked.



    4) You may want to run applejack to clean up your machine.




    a lot more ways to fix your Mac.





    verify & repair your startup drive

    To verify & repair you file system on the startup drive, you will need to run disk utility from you installation DVD.


    This article  will tell you how to get to disk utility.  Once in a disk utility, you can go and attempt to recover the disk.


    To repair your startup drive, you will need to run disk utility from your startup DVD.
    Mac OS X 10.4: About the utilities available on the Mac OS X 10.4 Install DVD



    How to run disk utility from your startup DVD.

    1. Insert your  startup DVD  into your reader.  Power down your machine.  Hold down to the c key.  Power on your machine.  This will bootup your startup DVD.
    2. This will bring you to a panel asking you for your language.  Pick your language.

    3.          /___sbsstatic___/migration-images/188/18899229-1.jpg
    4. You you come to the Install Mac OS panel.  Do not install.
    5. Click on Utilities menu item.  This will give you a pulldown list of utilities. /___sbsstatic___/migration-images/188/18899229-2.jpg
    6. Click on the disk utility.
    7. You are now in disk utility.  Pick your disk.  Click on repair it should be on the lower right of the panel. /___sbsstatic___/migration-images/188/18899229-3.jpg
    8. Once the repair completes successfully, you should update your permissions.




    Verify a disk

    As an alternative, you can verify that the filesystem on the disk is correct. You will not be able to repair the file system.

    I suggest that you use disk utility to verify that your startup disk is OK. 
    Macintosh-HD -> Applications -> Utilities -> Disk Utility 
    Start up disk utility.  On the left pane view, you will see a list of all your disks.  
    Click on your startup disk.
    Click on the First Aid  Tab.
    Click on verify.  


    Hopefully your disk will verify.  If not, you have to boot from your installation DVD and run Disk Utility from there to attempt to repair your file-system.

  • Klaus1 Level 8 (47,600 points)

    Insert the following at the top of RCCHarles's great post:


    An early indication of a hard drive about to fail is a continual clicking sound.