3 Replies Latest reply: Jan 10, 2013 2:00 PM by rccharles
nelsonmcbride Level 1 (0 points)

I can run the iMac G5 for a couple of months and then it's back to the gray screen and the rotating star or whatever. Then I can reboot with the OS 10.5.6 retail install DVD, set up the computer as if was new then a month or two the dreaded grey screen with the fan running fast shows up again. This time I didn't upgrade to the next OS. I am going to let it run at this OS and see what happens. When I set the computer up I didn't install some of the extras such as printers, fonts and languages. Anyone had this problem?

iMac, Mac OS X (10.5.6), I'm running the older OS
  • rccharles Level 5 (7,608 points)

    I'd guess your hd is getting corrupted.


    Should run disk utility off of startup disc.


    I'd guess replacing the hd is in order.  Could run off of an external hd.





    I suspect disk corruptions.


    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. initial boot screen dvd.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.
    6. Click on the disk utility.
      cd pulldown.jpg
    7. You are now in disk utility.  Pick your disk.  Click on repair it should be on the lower right of the panel. http://farm5.static.flickr.com/4020/4307921456_2064c6612c.jpg
    8. Once the repair completes successfully, you should update your permissions.




    You need an external Firewire drive to boot a PowerPC Mac computer.


    I recommend you do a google search on any external harddrive you are looking at.


    I bought a low cost external drive enclosure. When I started having trouble with it, I did a google search and found a lot of complaints about the drive enclosure. I ended up buying a new drive enclosure. On my second go around, I decided to buy a drive enclosure with a good history of working with Macs. The chip set seems to be the key ingredient. The Oxford line of chips seems to be good. I got the Oxford 911.



    Has everything interface:

    FireWire 800/400 + USB2, + eSATA 'Quad Interface'


    save a little money interface:

    FireWire 400 + USB 2.0

    This web page lists both external harddrive types. You may need to scroll to the right to see both.


  • nelsonmcbride Level 1 (0 points)

    Thanks rccharles,

    I ran the install DVD I received a few years ago from apple it's not the orignal but it's OS X 10.5.6 Retail. I'm not sure if this should matter. Anyway I tried a number of times to repair and received:

    incorrect number of thread counts

    invalid volume file count

    repairing volume

    and finally,

    The volume HD could not be repaired after 3 attempts

    Error: file system or repair failed

    What's the next step? New HD?

    Thanks Nelson

  • rccharles Level 5 (7,608 points)

    I recommend a new hd because you have been having the problem for awhile.


    You never can be sure.  I'd go with an external hd, because you can always use it as backup if it doesn't solve the problem.


    There are better file system repair utilities, but I think not in your case.


    Disk Warrior