Skip navigation

How can i install mac os x snow leopard on Lion?

3156 Views 2 Replies Latest reply: Aug 1, 2011 2:23 PM by Kappy RSS
12mamyr Calculating status...
Currently Being Moderated
Aug 1, 2011 2:18 PM

  • babowa Level 7 Level 7 (22,140 points)
    Currently Being Moderated
    Aug 1, 2011 2:21 PM (in response to 12mamyr)

    Are you asking how to revert back to Snow Leopard?

     

    Do you have a bootable clone and/or Time Machine backup?

     

    If yes, easy: boot from clone or OS install disk; erase drive and clone (or restore from TM) your system.

     

    Note: both methods involve erasing the drive. There is no other way to revert back except to erase. Make sure you have your important data backed up safely.

  • Kappy Level 10 Level 10 (221,190 points)
    Currently Being Moderated
    Aug 1, 2011 2:23 PM (in response to 12mamyr)

    You cannot. Either you erase the drive on which you installed Lion then reinstall Snow Leopard or you create another partition on the drive and install Snow Leopard on that partition so you can dual boot.

     

    Downgrade Lion to Snow Leopard

     

    1.  Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button.  When the menu bar appears select Disk Utility from the Utilities menu.

     

    2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area.  If it does not say "Verified" then the drive is failing or has failed and will need replacing.  SMART info will not be reported  on external drives. Otherwise, click on the Partition tab in the DU main window.

     

    3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.

     

    4. Quit DU and return to the installer. Install Snow Leopard.

     

    This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard (see below.) I suggest you make a separate backup using Carbon Copy Cloner 3.4.1.

     

    If you have Snow Leopard Time Machine backups, do a full system restore per #14 in Time Machine - Frequently Asked Questions.  If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion files.

Actions

More Like This

  • Retrieving data ...

Bookmarked By (1)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.