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  1. #1
    Late 2007 27" iMac

    Member Since
    Feb 03, 2012
    Location
    Gilbert AZ
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    3
    Specs:
    2007 27" iMac; iPad 2; iPhone 5; 2012 MacBook Pro; AppleTV 1 and 2
    Late 2007 27" iMac
    So a couple months ago my beloved iMac (my first) booted to a grey screen with a never-ending circle on the screen. It had been running slow and weird ever since upgrading to Lion (lesson learned).

    The data was not a problem since I had all files backed up to my 2T NAS. I didn't do anything with it until this past weekend when I took on the task of attempting a rebuild.
    I formatted and installed the original OS (Tiger). Once installed, there were updates. Two updates failed. I thought, "no problem", they'll get caught when I upgrade to Leopard. Leopard went in - no problem. Snow Leopard went in no-problem. But on re-boot after Snow Leopard, I was back at the grey screen with the never-ending circle. = (

    I did disk-utility which said I had errors. I zero-wrote the drive, then disk-utility said all was well. I started again.

    Tiger went in fine. Ran disk utility after Tiger install, no errors. I installed Leopard. This time Leopard install failed. Disk utility reported errors. Formatted drive and then disk utility reports all is well.
    Finally, I just installed Tiger and did not do any updates to it.

    Sorry to be so long-winded, but - is this indicative of a hard disk failure or something else? I'll replace the HD if that's all it is. Why does disk utility report that all is well, when it may not be?

  2. #2
    Late 2007 27" iMac
    louishen's Avatar
    Member Since
    Oct 22, 2007
    Location
    London
    Posts
    8,968
    Specs:
    Mac Mini Core i7 2012 | White 2009 MacBook 2 Ghz | 733 Mhz G4 Quicksilver
    Why didn't you just reformat and install Snow leopard

    There is no need to start with tiger
    Member of the Month September 2008 & August 2012 | Found advice useful? use the rep system

  3. #3
    Late 2007 27" iMac

    Member Since
    Apr 24, 2009
    Location
    UK
    Posts
    593
    Specs:
    MacBook Pro 15" 2.8 GHz
    Quote Originally Posted by brooksmf224 View Post
    Sorry to be so long-winded, but - is this indicative of a hard disk failure or something else? I'll replace the HD if that's all it is. Why does disk utility report that all is well, when it may not be?
    You have been describing one way in which a hard drive can fail. Disk Utility often reports
    a failed or failing drive as good. It only performs basic tests, your drive failed as you wrote extensively to it, Disk Utility does not read and write to every sector, so will not identify every way in which a drive can fail.
    Steve
    UK

  4. #4
    Late 2007 27" iMac

    Member Since
    Feb 03, 2012
    Location
    Gilbert AZ
    Posts
    3
    Specs:
    2007 27" iMac; iPad 2; iPhone 5; 2012 MacBook Pro; AppleTV 1 and 2
    Quote Originally Posted by louishen View Post
    Why didn't you just reformat and install Snow leopard

    There is no need to start with tiger
    Sorry, I think I did start with just Snow Leopard, but the process halted at some point saying there was a problem and I believe I had a "restart" button. After that, disk utility reported an error - then I ran the zero-write, then disk utility reports "all OK". That's when I started with Tiger-->Leopard-->Snow Leopard.

  5. #5
    Late 2007 27" iMac
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,190
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Trash that drive and get a new one. You'll be fooling with it for hours on end only to finally have it completely crash and not be recognized. Save yourself aggravation and get a new drive and then install Snow Leopard. Afterward, restore your data from the backup.

  6. #6
    Late 2007 27" iMac
    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,206
    Specs:
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '11 1.8 i7 4GB 10.10; 21" iMac '13 2.9 i5 8GB 10.10; 5s & 5c
    ^^^^ Agreed with chscag. Once a drive starts these type of problems, you end up just spending countless wasted hours. Can't tell you how many times I've gone through that type of thing. No more... Drives are too cheap.

    (And the upgrade to Lion would not be the cause - only coincidental.)
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  7. #7
    Late 2007 27" iMac

    Member Since
    Feb 03, 2012
    Location
    Gilbert AZ
    Posts
    3
    Specs:
    2007 27" iMac; iPad 2; iPhone 5; 2012 MacBook Pro; AppleTV 1 and 2
    Update: Installed new HDD. Snow Leopard went in - no problem - did the Lion upgrade, Parallels VM with Office 10 Ultimate, Aperture, etc., etc. Works like a dream! Thanks!

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