11 Replies Latest reply: Aug 30, 2010 3:26 PM by Papillon2
The Cardinal Level 1 (80 points)

I have a 24" iMac (2007) which is having a few problems. For example, iPhoto takes forever to open and iMovie is pretty slow too.

I would like to reinstall Snow Leopard to see if that helps. Can anybody advise if I will lose any data etc.? I have the machine backed up on Time Capsule so I can restore it afterwards, but would that just reintroduce the issues I'm seeing? I'm also wondering what a reinstall would do to my Boot Camp partition?


MacBook Pro 17/2.16 GHz & iMac 24, Mac OS X (10.6.4), iPhone
  • sig Level 8 (35,785 points)
    Doing a reinstall is a bit of over kill. Why not post your issues to the particular forums and see if they can be resolved.
  • Neville Mayfield Level 4 (1,305 points)
    Have you done the usual maintenance things - startup from the installation cd and use Disk Utility to repair disk then when all is ok to repair permissions? If not I recommend this as a first step.

    Try starting in 'safe mode' by holding the shift key until the grey Apple logo appears and test iPhoto & iMovie. If they strart well then it is likely some 3rd party software is causing the problem. Hunting this down can be tedious.

    If this works try establishing another account through System preferences/Accounts and see whether these 2 applications work well. If they do it could be that your present account has some glitch.

    If you have done these another suggestion is to download the latest combo update from Apple Downloads and install this over the top of what you have already. This can correct some problems and shouldn't affect your Windows partition.

    Let's know how you get on.

  • mcintoshandpc Level 1 (0 points)
    I prefer to do this :
    -Backup some important Data/Files to Flash Memory;
    -Restart Mac and boot from DVD (C Button);
    -Run Disk Utility;
    -Erase All partition with Mac Format;
    -Re-Install Mac OS X Snow Leopard;
    -You can restore your Data/Files From Flash Memory and setting preferences manually !
  • R C-R Level 6 (17,400 points)
    mcintoshandpc wrote:
    -You can restore your Data/Files From Flash Memory and setting preferences manually !

    For most of us, resetting all our preferences manually would be a very time consuming chore. (For instance, the Finder plist preference file alone can contain hundreds of items.) But manually "restoring" plists from a backup piecemeal fashion is not a good idea for at least two reasons:

    1. These files often contain internal references to one another & to other files. Some of these references are specific to the file system structure at the time of their creation. The OS normally automatically makes any needed changes in these references when the file structure changes. However, if the references are to a file structure that no longer exists, the OS may not be able to resolve them. When that happens, it may simply discard the reference completely, effectively resetting the preference value to defaults. In some circumstances, it will instead resolve the references incorrectly, leading to unexpected results.

    Neither result is desirable behavior.

    2. A common reason for resorting to the "nuclear" solution of erasing the disk & starting over is to eliminate any hard-to-find problems in the preexisting files created by the OS or by applications. A very common cause of mis-operation & unexpected behavior is corrupted preference files. It makes no sense to go to the trouble of erasing the disk if you are just going to put the same potentially damaged files back on it.
  • The Cardinal Level 1 (80 points)
    Thanks for the replies. I have tried starting from the installation CD, clearing the cache, etc. etc. Nothing has changed.

    I'll try the suggestion of starting in safe mode this weekend and see how that goes. I'm minded to format the drive, reinstall OS X and then restore the TM backup to see if that helps though as it really is starting to become a complete pain in the ar$e!
  • Papillon2 Level 1 (0 points)
    I am about to attempt a clean install...any do's & don'ts I should be aware of?

    It's time for a mac make-over, streamline files & applications. My mac needs to run mainstage for live music performance & needs to be firing on all cylinders.

    I have backed up everything & am ready to go...but am unsure of what I am doing so any help & advice would be most gratefully received.

    Many thanks,

  • Allan Eckert Level 9 (50,716 points)
    Hi Nick;

    I guess you didn't read what was said about Macs very rarely requiring the nuclear solution like Windows PC do, have you? Personally, I think your plan is only going to waste time. If you have time to waste proceed. If not, then I would just starting getting ready for the show.



    Message was edited by: Allan Eckert
  • radio50 Level 1 (70 points)
    When my mid-2008 24" iMac developed a problem with the DVD drive (wouldn't recognize blank disks) the Genius Bar person suspected a software problem rather than a hardware one. After a few tests he suggested that I reinstall Snow Leopard. I simply inserted the Snow Leopard disk and told it to reinstall (can't remember the exact wording). I did not erase or repartition the disk.

    It didn't take long, and everything else was left intact: data, settings, preferences, etc. That seemed to solve the problem and was fairly painless.
  • Papillon2 Level 1 (0 points)
    Thanks Allan

    Sorry to say I haven't read much about this at all...so thanks very much for the advice. I was concerned about 'black screen' which I seem to be getting with increasing frequency, a few audio issues with logic & it bothers me that my mac runs so hot! Not even sure if this really is an issue?

    Your thoughts would be helpful as time is very precious just at the moment preparing for not just one show, it's a 4 month residency, 6 nights a week!

  • Papillon2 Level 1 (0 points)
    Thanks, that's very helpful...will give it a try