Previous 1 2 Next 15 Replies Latest reply: Apr 14, 2013 11:24 AM by Eric Root
CoolMacFan Level 1 Level 1

If installing mountain lion do I need a clean install?


MacBook Air (11-inch, Mid 2012), OS X Mountain Lion (10.8.3)
Solved by Eric Root on Apr 12, 2013 1:57 PM Solved
Maybe these will help. You have already done some of the suggestions: Startup Issues - Resolve Startup Issues - Resolve (2) Startup Issues - Resolve (3)
Reply by macjack on Mar 30, 2013 4:30 PM Helpful
No, not necessary at all, assuming your Mac is running well.
Reply by arthur on Mar 31, 2013 2:08 PM Helpful
The first restart after an installation can be longer, as the system software has to rebuild the caches. If I were you I'd restart it a time or two and see if it improves. If not, you could try repairing your hard drive with Disk Utility and seeing if that makes a difference.  Personally, I'm a fan of clean installs. I just replaced my hard drive with a SSD and did a clean install of ML. Just seems to save time in the long run.

All replies

  • macjack Level 9 Level 9

    No, not necessary at all, assuming your Mac is running well.

  • CoolMacFan Level 1 Level 1

    Thank you for the reply - I really appreciate the help - My macbook is very slow to restart - takes about 1min 40sec after upgrading to mountain lion [took 20-30 secs before installation of mountain lion] - would installing Mountain Lion on top of Lion cause this?

  • arthur Level 5 Level 5
    expertise.ibooks
    iBooks

    The first restart after an installation can be longer, as the system software has to rebuild the caches.

    If I were you I'd restart it a time or two and see if it improves. If not, you could try repairing your hard drive with Disk Utility and seeing if that makes a difference.

     

    Personally, I'm a fan of clean installs. I just replaced my hard drive with a SSD and did a clean install of ML. Just seems to save time in the long run.

  • CoolMacFan Level 1 Level 1

    Ok thank you - I think I'll have to go for the clean install to resolve. The mac runs fine - it's I just that I dont like the delayed shutdown and start up.........

  • macjack Level 9 Level 9

    Remember the thing about clean installs is they have to be clean. That means starting out with a fresh system, migrating nothing and re-installing all non-default applications. Otherwise you may just be re-introducing the problem.

     

    I don't think it has anything to do with installing on top of, whenever I installed ML the system always seemed snappier. Also, ML introduces some new new features like Resume which will open applications that were opened after the last shutown/restart.

     

    How much RAM do you have?

  • CoolMacFan Level 1 Level 1

    Hi - I have 4GB of RAM - non upgradable though as I believe it's not possible to do this with the macbook air....

  • CoolMacFan Level 1 Level 1

    Ok thank you - I have tried disk utility - I have also ran "clean my mac" - non of this is making the shutdown and start up times any quicker though. Iwill look at doing a clean install of mountain lion - it'll be good practice when I upgrade to Mountain Lion's successor later this year.

  • putnik Level 3 Level 3
    expertise.macosx
    Mac OS X

    You might check what is loading at startup. For example Dropbox updates could take time.   Also, what apps are loading if the "Resume" option has been checked.  There can be delays while some apps like iTunes login to MAS and other such services.  My startup takes ages because of Resume and I normally just sleep the computer for this reason.

     

    Perhaps running the automation script in OnyX will clean out some crud, but note this takes ten minutes or more to run and will actually make for a slow first startup while caches re-populate.

     

     

    Screen Shot 2013-04-07 at 18.50.19.png

  • macjack Level 9 Level 9

    Get rid of Clean My Mac, it's probably the culprit.

    These utilities do more harm than good. Macs should be self-maintaining and when they're not you need to look for the problem.

    How did you get those utilities on a clean install? EDIT: I see you haven't done the clean install yet.

  • macjack Level 9 Level 9

    Try starting in Safe Mode and see if the problem still occurs?

    Restart holding the "shift" key.

    (Expect it to take longer to start this way because it runs a directory check first.)

     

    If this works look in System Preferences > Users & Groups > Login items and delete any third party login items (-), you can always add them back with the (+).

    Also look in /Library/Startup Items. Nothing is put in that folder by default, so anything in there is yours.

  • CoolMacFan Level 1 Level 1

    Ok thanks - tried the Safe Mode and probably took longer to start up. I have cleared out all the start up/login items but the issue is still there - ie taking nearly 2 minutes to restart or 30 seconds to sleep...

  • CoolMacFan Level 1 Level 1

    Ok thanks - tried the Safe Mode and probably took longer to start up. I have cleared out all the start up/login items but the issue is still there - ie taking nearly 2 minutes to restart or 30 seconds to sleep...

  • Eric Root Level 9 Level 9
    expertise.macosx
    Mac OS X

    Maybe these will help. You have already done some of the suggestions:

     

    Startup Issues - Resolve

     

    Startup Issues - Resolve (2)

     

    Startup Issues - Resolve (3)

  • CoolMacFan Level 1 Level 1

    I started up on Verbose mode [command "V"] which showed the start up sequence was hanging on a USB driver. I reinstalled ML and the issue is resolved. Thanks for the assist.....

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