Clean Install or Upgrade?

Discussion in 'OS X Mountain Lion (10.8)' started by adztaylor, Jul 24, 2012.

  1. macrumors 68000

    Aug 20, 2009
    Preston, UK
    I understand there have been threads on this, but wanted to include a poll to sample just what people's preferences are. So please vote :)
  2. macrumors 68000


    Jul 6, 2012
    Kissimmee, FL
    I upgraded to ML GM ( Im back on Lion, not because there were problems) and it ran smoothly! :)
  3. macrumors 6502

    Oct 28, 2008
    I will do a clean install on my MBA to do some spring cleaning on the stuff I don't use anymore.

    my old uMB I will just do an upgrade
  4. macrumors 65816


    May 2, 2005
    Did a clean install on my MacBook and an upgrade on my iMac. Both went smoothly and are running fine.
  5. macrumors 68030

    Jul 13, 2008
    Why not try the upgrade first; if it fails then you can do a clean upgrade. Faster.
  6. macrumors 6502a


    Feb 4, 2010
    After reading for a month on this forum... I think I'll go with the upgrade.

    When I had my 2010 mbp I went with the upgrade to SL. It did make my computer a bit slow where i was constantly getting the rainbow timer. At that time I should have gone with a clean install.

    Now that I have the retina mbp, ML is 'suppose' work well for this laptop and this mbp was made with ML in mind. So, I'll go ahead and just do the upgrade. :D
  7. macrumors member

    May 26, 2012
    seeing as how I just picked up this Mac saturday I'm just going to be upgrading, no point in a clean install for me as there is barely anything on the mac.
  8. macrumors regular

    Jan 8, 2011
    Do I need to have an external hard drive to do a clean install? If so, would it be worth buying one just for it?
  9. macrumors 68040


    Aug 6, 2007
    To me, your computer has to be in pretty bad shape in order to have to do a clean install. I have seen no ill effects form an upgrade. It's really more like a big service pack. Saves a lot of time and keeps your personal settings.
  10. 50voltphantom, Jul 24, 2012
    Last edited: Jul 24, 2012

    macrumors regular


    Jun 23, 2011
    I noticed better performance doing a clean install of Lion after trying the upgrade so it will be a clean install again for me. Purchased new flash drive today.
  11. macrumors 6502a

    Apr 26, 2011
    Upgrade. One of the reasons I went to Macs is I got tired of all the bending over backwards you had to do with Windows. I upgraded my 3 Macs from Snow Leopard to Lion with no problems or performance issues. I'll do the same to ML.
  12. macrumors 6502a


    May 7, 2012
    San Francisco, CA
    I just don't get the part of clean install, redeem code and USB drive. How to put them together? Basically, I wanna USB partition for install ML. I don't wanna waste recovery partition on my HDD.
  13. macrumors 6502a


    Sep 26, 2010
    Peterborough, Canada
    I will be doing an upgrade as I'm too lazy and don't want to re-install anything. Hopefully there won't be issues when trying to download tomorrow.
  14. thread starter macrumors 68000

    Aug 20, 2009
    Preston, UK
    I thought more people would do the upgrade route. Personally I'm going to clone my hard drive to an external and upgrade my internal. If I encounter any problems then il go for the clean install. No point doing a clean install if the upgrade runs smoothly.
  15. macrumors 65816


    Sep 7, 2004
    Salt Lake
    Upgrade here, don't want to devote the time to re-download so many apps from the Mac App Store, AutoDesk, and others. That would be a days affair.
  16. macrumors 6502a

    Stooby Mcdoobie

    Jun 26, 2012
    I'm going for a clean install because I'm getting a new SSD for my MBP. I would just do a clone of the HDD I'm on now (running GM build), but it's got over 80 GB of 'other' files -- even as a new Mac user, I know something's not quite right there.

    Attached Files:

  17. macrumors 68020


    Aug 17, 2010
    In America
    Is clean installing the following? :

    1) buy and download Mountain Lion

    2) back up everything with Time Machine

    3) Run Mountain Lion setup, choose clean install

    4) finish installation process

    5) bring back all files via Time Machine

    how does one do that?
  18. macrumors 6502a

    Stooby Mcdoobie

    Jun 26, 2012
    No, that wouldn't be a true fresh/clean install. Whatever unnecessary/buggy/glitchy/etc. files you had before will be brought back over via Time Machine.

    A fresh install is when you back up only your files (music, documents, pictures, etc. -- not the settings files), then replace them manually after the install.
  19. macrumors 6502

    Jul 19, 2011
    My 2011 MBP has been incrementally upgraded from Snow Leopard to Lion and now Mountain Lion GM with no problem. Don't see a need to change my methods especialy when a "repair permissions" and SMC/PRAM reset will fix most problems thereafter :)
  20. macrumors 68000


    Feb 26, 2012
    Michigan/Ohio, USA
    Upgrade for me. My MacBook Pro is still new. I've only had it for about 5 months. I don't see a point in doing a fresh install.
  21. macrumors member


    Jun 11, 2012
    Clean install for me. I always clean install.
  22. macrumors member

    Nov 11, 2011
    Newcastle upon Tyne, England
    Clean install on both iMac and MBA.

    I'd pickled the iMac a bit with my old Windows-centric mindset, but couldn't be hacked to unpickle it.... clean install sorted everything out for me (running GM from my dev account).

    Mindset fully Apple now though, as I have trouble using Windows boxes now when I've got to troubleshoot and fix for people!
  23. thread starter macrumors 68000

    Aug 20, 2009
    Preston, UK
    Yeah my MacBook Pro is still quite new which is why I'm leaning towards upgrade.
  24. macrumors regular


    Nov 16, 2011
    Perth, Australia
    I get why some users of Snow Leopard or Lion might want a Clean Install; but some rMBP are saying that their going to do a Clean Install. Why the hell would you need to do that? It's nearly brand spankin' new.
  25. macrumors 65816


    Jul 18, 2010
    Boston, MA
    I always clean install even though an upgrade would probably be sufficient. I like the cleansing feeling of the clean install to get rid of the accumulated junk in the bowels of the OS - preference files, support files of apps that I downloaded and deleted, etc.

    It takes a little more time and know-how, but at the end you're essentially rewarded with a "brand new" machine.:p

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