1 Reply Latest reply: Jul 4, 2011 3:43 PM by Kappy
geraldfromtemple city Level 1 (0 points)

Hello friends,

I have a 24in iMac. When I start it up it acts normally displaying the familiar apple logo. After a minute it turns into a circle with a diagonal line going through it. If I reinstall snow leopard everything works fine until I shut down and restart.

Any suggestions would help.

iMac, Mac OS X (10.6.8)
  • Kappy Level 10 (263,335 points)

    You may have a bad hard drive or one that is corrupted. If you don't have a backup then give this a try:


    Reinstall OS X without erasing the drive


    Do the following:


    1. Repair the Hard Drive and Permissions


    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. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.


    If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.


    2. Reinstall Snow Leopard


    If the drive is OK then quit DU and return to the installer.  Proceed with reinstalling OS X.  Note that the Snow Leopard installer will not erase your drive or disturb your files.  After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.


    Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.


    If you do have a backup then I would boot from the Snow Leopard DVD. After the installer loads select your language and click on the Continue button. Wait for the menubar to appear (do not install yet) and select Disk Utility from the Utilities menu. Select your system volume from the left sidebar, click on the Erase tab in the DU main window, set the Format type to Mac OS Extended, Journaled, then click on the Erase button. When the disk has been reformatted quit DU and return to the installer. Complete the reinstallation of Snow Leopard.


    Once the installation is completed and you have booted into the Startup Assistant you will be given the option to restore from a Time Machine backup, another Mac, or a backup drive. Select the latter option to restore your Home folder from the backup drive. You can also restore third-party applications and network preferences.