And what are things to watch out for based on previous upgrades?

  • 2
    Lion questions are currently off-topic.
    – user6124
    Jul 14, 2011 at 14:09
  • Seems like moderators have their hands full closing all of the Lion questions - I feel for you.
    – Odinulf
    Jul 14, 2011 at 15:05
  • @bckbck: I asked a question over on meta about what to do about these because I hadn't heard that myself. The early opinion about these questions is that they will not be opened upon Lion's release. Putting aside the fact that there are too many to reopen now, a lot might have changed between beta and release to keep these relevant, and a lot of the questions will be answered on their own upon release. I think we'll be just cutting our losses and leaving closed questions alone. That policy may change, but I doubt it. Jul 14, 2011 at 20:06
  • @Phillip: ok, noted.
    – user6124
    Jul 14, 2011 at 22:28
  • Why not ask the question again. Asking people what changes happened between Leopard and Snow Leopard would be a great question. If people take some of that advice to heart for tomorrow, the discussion is about something that actually shipped and isn't directly asking people to break their word if they signed an NDA.
    – bmike
    Jul 16, 2011 at 14:38

1 Answer 1


No, the Lion upgrade will only affect the partitioned part of your hard drive housing Mac OS.


It will also install a small partition housing, basically, the installer of Mac OS. This is so that if your installation ever fails or something like that you can always reinstall.

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