Upgrading to Mountain Lion - What will TM save?

Discussion in 'OS X Mountain Lion (10.8)' started by 0000757, Jul 10, 2012.

  1. 0000757 macrumors 68040

    Dec 16, 2011
    So I'm debating between doing a clean install or just a straight upgrade. The things that are most valuable to me that I need to keep are:

    My iPhoto Library
    My iTunes Library (Music & Movies)
    My iMovie Projects & Events
    My Final Cut Pro Projects & Events
    All of my iLife Apps
    All of my Microsoft Office Apps
    All of my Adobe CS6 Apps & Utilities

    Which of these can Time Machine save? Would it be better for my system (Which I recently reinstalled [Mac OS X Lion] on 6/18/12) to clean install and then put everything back, or will my system perform just fine with a standard upgrade? (I come from a Windows background [my first mac], so upgrading is always hell to me)
  2. Cougarcat macrumors 604

    Sep 19, 2003
    TM backs up all of that, but an upgrade will be just fine.
  3. clukas macrumors 6502a


    May 3, 2010
    Ok this is very important, performing a clean install followed by a time machine backup does not count as a clean install. You will not see any performance gains, as time machine puts all the crap you have deleted back.

    If you want to see real performance gain, backup all your stuff manually onto a external hard drive, and perform a clean install (with no time machine backup). If you don't want to go through all this hustle just do an upgrade.
  4. eddjedi macrumors 6502

    Sep 7, 2011
    Agreed, doing a clean install and then Migrating just takes you right back to square one. As long as you do a bit of house keeping now and again (eg don't have a 100GB Library folder) then a clean install really isn't necessary.
  5. 0000757 thread starter macrumors 68040

    Dec 16, 2011
    My Library is only 8GB, so I should be good.

    Just to double check, upgrading will not affect my iPhoto and iMovie projects, correct? (Too many projects lost upgrading with Windows.....)

    Also, will upgrading to the GM version affect anything, or will it upgrade normally?
  6. Jelite macrumors 6502a

    Feb 16, 2008
    If you only installed Lion less than a month ago then there is even less reason to do a clean install, nothing will be lost or changed upgrading to the GM.
  7. ixodes macrumors 601


    Jan 11, 2012
    Pacific Coast, USA
    Although it's more work, I always wipe the drive and do a clean install. Starting from ground zero, just like it came out of the box when new, has always served me very well. My ongoing desire to continue to improve my setup and optimization techniques, can only be practiced when starting fresh.
  8. eddjedi macrumors 6502

    Sep 7, 2011
    As with any upgrade or major system change, do a backup first, preferably with Time Machine. Then if anything goes wrong, one click and you're back to where you were.

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