Will my hard drive data be wiped when I upgrade to ML?

Discussion in 'OS X Mountain Lion (10.8)' started by iSimpsons, Jul 23, 2012.

  1. macrumors regular

    #1
    I was just wondering when I upgrade to ML, would all my data on my hardrive go? Or would I still have the same information, applications, documents etc. stored?
     
  2. macrumors regular

    natd1993

    #2
    No, unless something goes tragically wrong. OS X upgrades just overwrite the system files, and leave your data untouched. You'll notice no change to your data after the upgrade.
     
  3. Moderator

    maflynn

    Staff Member

    #3
    No, the upgrade option is seamless and you should be all set.

    With that said, you really do need a backup, stuff happens and if something did occur your data would be safe.
     
  4. macrumors 601

    ixodes

    #4
    It depends on how you choose to upgrade. There's lots of good info here, just do a search.

    I prefer to wipe my drive and start fresh. I've got everything backed up so it's easy. But it's also personal preference.
     
  5. macrumors demi-god

    #5
    x2. OP, if you're not already having Time Machine backup your Mac automatically, I'd def. suggest you consider it!
     
  6. macrumors regular

    #6
    I'd go with this too.
     
  7. macrumors 6502

    TheGdog

    #7
    +1 on all the other posts. Always Always Always backup your data. The day you think you don't need to, is the day you could lose everything. I know a number of people it has happened to!
     
  8. macrumors 6502a

    #8
    I don't see the need for a fresh start if your system is still working as well now as it was when Lion was first installed. I'd only do a clean install if my OS was not in tip-top shape. A building is only as good as its foundation. If the foundation is sound then you're good to go.

    ----------

    My time machine can take me back to the Cretaceous, so I'm good. :)
     
  9. macrumors 601

    ixodes

    #9
    There is no right or wrong. It's just a preference of mine.

    Of far greater importance is to have an automated backup routine.
     
  10. macrumors 68000

    steve-p

    #10
    True. Data isn't data until it's backed up. Until then, it's just temporary files.
     
  11. macrumors regular

    #11
    a follow up question:

    I'm currently using regular lion on my macbook air..

    i upgrade to mountain lion in a couple of days..

    in a couple of months, ill reformat. will i have to "reinstall" both lion and mountain lion?
    or will me hdd partition with the lion installation stuff become mountain lion?
     
  12. macrumors 603

    heisenberg123

    #12
    what lion stuff? once you upgrade lion no longer will exist, once your format it will be a blank hard drive
     
  13. macrumors regular

    #13
    yes

    but reinstalling lion, comes from my 2nd hdd partition, which is only accesable from the restore function during boot

    will updating to lioon change that partition so it installs a "clean" mountain lion, or does it just install "regular" lion, and i have to update again?
     

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