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  1. #1

    Unit134679's Avatar
    Member Since
    Apr 06, 2008
    Location
    NC
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    64
    Specs:
    iMac C2D | 2.66 GHz | 2GB RAM | 300GB HDD | OSX 10.6.2
    iMac SLOW After Snow Leopard Upgrade
    Since I upgraded my iMac to Snow Leopard, it has been running very sluggishly, in particular when running an up-to-date Flash. For some reason it runs at 32-bit and slows all computer performance.

    Normally I find myself having to Force Quit applications like Safari, Firefox, Mail, and iTunes.

    Anyone experiencing something similar?

  2. #2

    PowerBookG4's Avatar
    Member Since
    Jan 08, 2005
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    New Jersey
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    6,188
    Specs:
    Mac Pro 8x3.0ghz 12gb ram 8800GT , MBP 2.16 2GB Ram 17 inch.
    Yes, after updating my macbook it went into being a super slow, horrible, experience to use it. I reformatted and did a fresh install of SL and now its running super fast.
    My Website
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    I was on the M-F honor roll for Febuary:2006

  3. #3

    Unit134679's Avatar
    Member Since
    Apr 06, 2008
    Location
    NC
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    64
    Specs:
    iMac C2D | 2.66 GHz | 2GB RAM | 300GB HDD | OSX 10.6.2
    Did you go with the option of keeping a complete filesystem backup but not restoring to previous state?

  4. #4


    Member Since
    Nov 09, 2009
    Posts
    9
    I would suggest to fresh install SL. I upgraded from leopard, although I didn't have the slow problem as you, what I found was that the space used by the upgrade was much more than Leopard alone. After I fresh installed SL, it only took up half of what fresh install of Leopard would take up. Really space efficient. And the upside is its faster, although just.

  5. #5

    Unit134679's Avatar
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    Apr 06, 2008
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    NC
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    Specs:
    iMac C2D | 2.66 GHz | 2GB RAM | 300GB HDD | OSX 10.6.2
    Quote Originally Posted by macalex View Post
    I would suggest to fresh install SL
    Since I got SL installed already, just pop in the SL install disc and install again? I'll do that today, report back later.

  6. #6

    PowerBookG4's Avatar
    Member Since
    Jan 08, 2005
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    Mac Pro 8x3.0ghz 12gb ram 8800GT , MBP 2.16 2GB Ram 17 inch.
    Quote Originally Posted by Unit134679 View Post
    Did you go with the option of keeping a complete filesystem backup but not restoring to previous state?
    I just used my time machine back up.
    My Website
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    I was on the M-F honor roll for Febuary:2006

  7. #7

    Unit134679's Avatar
    Member Since
    Apr 06, 2008
    Location
    NC
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    64
    Specs:
    iMac C2D | 2.66 GHz | 2GB RAM | 300GB HDD | OSX 10.6.2
    Wow. Seems to be working much much faster, thanks.

    Does it matter that Flash Player (Safari Internet plug-in) runs at 32-bit instead of 64-bit? It and a DashboardClient are the only apps at 32-bit.

  8. #8


    Member Since
    May 17, 2008
    Posts
    34
    I know this is an old thread but can someone walk me through what I need to do to get my imac back to running fast? I just upgraded to SL and now everything is slow and I always have to force quit everything! Please help!

    All I did was get the CD...run it and install it. Now everything is slow

  9. #9

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
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    48,248
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    Did you do a fresh install and restore from your Time Machine backup? Or did you just do an over the top upgrade?

    If the latter, try the former.

  10. #10


    Member Since
    May 17, 2008
    Posts
    34
    OK your speaking to a "dummy" LOL Can you explain to me what the difference is between the 2.

    Here is what I did. I ordered the CD..got it and inserted it and followed the promts and insltalled it. I also installed ilife 11. Did the same thing. I don't know about time machine? I thought that was an extra service you paid for.

    So are you saying to just pop in the CD and install again? Do i remove anything? Will I lose anything?

    Thanks and sorry I am not up to speed in doing this all

  11. #11

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
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    48,248
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    You did an upgrade rather than a clean install. That almost always results in fragmentation which will cause slow downs.

    Here's what you need to do: First, buy an external drive. Use Time Machine to make a full backup of everything. Make sure it's a good backup.

    Then boot with your Snow Leopard DVD. Use Disk Utility to wipe the drive clean, and then reinstall Snow Leopard. During the reinstall, it will ask if you have a backup from which to restore. Respond yes, make sure the external drive is attached. The backup you made will be restored automatically and all the fragmentation will be gone. The system should then boot faster.

    After the backup is restored, it's a good idea to also do a PRAM - NVRAM reset. See the following Apple KB article: LINK

  12. #12


    Member Since
    May 17, 2008
    Posts
    34
    OK I have a C;lick-Free External drive and I already backedup everything. Can I do this now?

  13. #13

    Stretch's Avatar
    Member Since
    Jan 13, 2007
    Location
    Central New York
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    4,773
    Specs:
    15in i7 MacBook Pro, 8GB RAM, 120GB SSD, 500GB HD
    If you have a backup of your current drive, then yes, you can erase and reinstall Snow Leopard. When loading up the installer, select Disk Utility from the Utilities menu at the top.
    Blog and Photo Gallery: http://philolin.me/

    Currently running OS X 10.10

  14. #14


    Member Since
    May 17, 2008
    Posts
    34
    I'm so confused.
    I did my backup. Put the SL disk in but it didn't bring up the disk utility so I searched and found it and opened it.
    I don't know what to erase? What I think I should erase isn't highlighted under format and name so it won't let me select it.

    I am constantly have to force quit my iphoto and email and firefox. EVERYTHING is running so slow.

  15. #15

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    48,248
    Specs:
    Late 2013 27" iMac, iPad 3, iPhone 6s+, iPhone 6+, 3 iPods, El Capitan
    Let's see if we can help:

    1. Boot with SL DVD.

    2. Do not proceed with the install. Click on the top menu, "Utilities", click on "Disk Utility".

    3. Highlight your hard drive on the left side. Click on the line that shows capacity.

    4. Click erase at the top of the screen.

    5. Select the format - Mac OS Extended

    6. Name the hard drive "MacIntosh HD" (no quotes)

    7. Click erase at the bottom of the screen, then click erase again on the second window. It make take a bit to finish.

    8. After that's completed, continue with the Snow Leopard install.

    9. Here is where you will be asked about the backup. Make sure your external hard drive is attached and contains the backup you made with Time Machine.

    10. Your backup will be restored minus any fragmentation.

    11. Reboot.

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