3 Replies Latest reply: Mar 24, 2014 8:40 AM by a brody
mus1234 Level 1 Level 1 (0 points)

lost all data when i installed os

  • The hatter Level 9 Level 9 (60,880 points)

    That might help a true mind-reader, but us mortals need details as to what, where, how and the rest.


    Of course it is best to have two backups before hand, clone your system and use TimeMachine.


    What OS? What Mac? what type hard drive device? and where.

  • Linc Davis Level 10 Level 10 (173,270 points)

    If all your files are missing

    You may have logged in as a different user, such as Guest. Open the Users & Groups pane in System Preferences. Your name should be at the top of the user list, under Current User. See also this support article.
    If files are missing from one folder
    Change the Finder view mode; for example, from icon view to list view, or vice versa.
  • a brody Level 9 Level 9 (64,875 points)

    For those with no backup, see this tip:




    For those with a backup, what type of backup do you have? 

    How full is your internal hard drive before installing the operating system, and how big is it?