Will I Lose My Time Machine Backup?

Discussion in 'macOS' started by Howard54, Dec 5, 2011.

  1. Howard54 macrumors member

    Oct 16, 2009
    I have a 2007 Mac Mini and over time I have added a boot camp partition, installed Parallels, and added a number of programs and utilities. Earlier this year I upgraded to Lion and added a Time Machine backup on an external drive.
    Now I want to reformat the Mac Mini’s drive and do a clean reinstall of Snow Leopard/Lion, eliminate the boot camp partition, and clean out all the unused programs and utilities.

    My question is what will happen to my Time Machine backups when I reattach the drive to the clean install. Will my old backups be retained so that I can access them and retrieve selected files if necessary, or will it see the clean install and delete all the prior backups? Anybody had experience with this issue before?
  2. MacForScience macrumors 6502


    Sep 7, 2010
    You can wipe your hard drive and do a clean install without damaging your time machine backups. You can then use Migration Assistant to restore data semi-selectively. Once you do this however you will loose access to your prior time machine backups.

Share This Page