ALANJOL

Q: (Running El Capitan currently) Want to run LEOPARD as alternative??

ALANJOL

(Running El Capitan currently) Want to run LEOPARD as alternative??

iMac, OS X El Capitan (10.11.6), As alternative start up in seperate

Posted on Oct 2, 2016 5:38 PM

Close

Q: (Running El Capitan currently) Want to run LEOPARD as alternative??

  • All replies
  • Helpful answers

  • by Kenichi Watanabe,

    Kenichi Watanabe Kenichi Watanabe Oct 2, 2016 5:56 PM in response to ALANJOL
    Level 8 (39,338 points)
    Mac OS X
    Oct 2, 2016 5:56 PM in response to ALANJOL

    You can only run Leopard on an Intel-based Mac, if it originally came with Tiger or Leopard.  Typically, the version of OS X on a particular Mac model cannot be earlier than its originally pre-installed OS X.

     

    Why do you want to run Leopard?

  • by ALANJOL,

    ALANJOL ALANJOL Oct 2, 2016 7:02 PM in response to Kenichi Watanabe
    Level 1 (8 points)
    Mac OS X
    Oct 2, 2016 7:02 PM in response to Kenichi Watanabe

    Hi Kenichi

    Thanks for your reply! I am running an intel- based Mac Originally it was probably Tiger and then I U/G to

    OSX10.6.8 before I U/G to El capitan!!

    Unfortunately I had CS6 etc. installed which the NEW OS won't allow me to open as it is saying they are PC

    based softwares!

    I have a OSX10.5 start up disc & I have seen in SET up that I can choose this OS selected without losing the current

    OS if it is located in an external drive????

    I am told Portioning is NOT the way to go???

    ALANJOL

  • by Kenichi Watanabe,

    Kenichi Watanabe Kenichi Watanabe Oct 2, 2016 7:15 PM in response to ALANJOL
    Level 8 (39,338 points)
    Mac OS X
    Oct 2, 2016 7:15 PM in response to ALANJOL

    If it originally came with Tiger, it can run Leopard. 

    Unfortunately I had CS6 etc. installed which the NEW OS won't allow me to open as it is saying they are PC based softwares!

    I think you mean PowerPC.  Macs used PowerPC processors until the switch to Intel, which happen during the Tiger to Leopard timeframe.  If you have a Snow Leopard installation disc, which you probably used to upgrade to 10.6.8, you can run Snow Leopard instead of going all the way back to Leopard.  Snow Leopard can run PowerPC-based software like your CS6 software.  After Snow Leopard (starting with Lion), PowerPC-based software can no longer run on Intel-based Macs.

     

    If your Leopard (or Snow Leopard) startup disk is installed on an external drive, you can start up from it by choosing it in System Preference Startup Disk pane, and clicking Restart.  Data on your internal drive is not affected.  To change back, go to System Preferences Startup Disk pane again, and choose the El Capitan startup disk on your internal drive.

  • by ALANJOL,

    ALANJOL ALANJOL Oct 2, 2016 7:38 PM in response to Kenichi Watanabe
    Level 1 (8 points)
    Mac OS X
    Oct 2, 2016 7:38 PM in response to Kenichi Watanabe

    Thank you again Kenichi!!

    That is good info. I gather I do not have too save any APPS. or files in doing this before switching OS's & if

    I OPEN CS6 and save any files I have done I simply save them in the Ext. drive before

    converting back to El Capitan??

    ALANJOL

  • by ALANJOL,

    ALANJOL ALANJOL Oct 2, 2016 7:43 PM in response to ALANJOL
    Level 1 (8 points)
    Mac OS X
    Oct 2, 2016 7:43 PM in response to ALANJOL

    Kenichi

    I have opened up about My Mac & have found it is a 3.2GHZ Intel Core i3

    Does that change matters??

    ALANJOL

  • by Kenichi Watanabe,

    Kenichi Watanabe Kenichi Watanabe Oct 2, 2016 7:59 PM in response to ALANJOL
    Level 8 (39,338 points)
    Mac OS X
    Oct 2, 2016 7:59 PM in response to ALANJOL

    Yes, you need to save your files before restarting the Mac.  Where you save the files is up to you.

    I have opened up about My Mac & have found it is a 3.2GHZ Intel Core i3

    If that's your iMac, I don't think it originally ran Tiger or Leopard.  This is a list of all iMac models

     

    http://www.everymac.com/systems/apple/imac/index-imac.html

     

    The earliest "3.2GHZ Intel Core i3" I see is from mid-2010.  Find your particular iMac model on the list and click it to see its detailed profile page.  Find what it says for Pre-Installed MacOS.  That's the earliest version of OS X it can run.  The iMac I'm looking at says that's 10.6.3, which is Snow Leopard.  So, if you install Snow Leopard on external drive that is 10.6.3 or later (10.6.8 is last version of Snow Leopard), that iMac should start up from it.  But not Leopard, because all versions of Leopard are earlier than Snow Leopard. 

     

    NOTE:  PowerPC-based software can still run under Snow Leopard.

  • by ALANJOL,

    ALANJOL ALANJOL Oct 2, 2016 8:09 PM in response to ALANJOL
    Level 1 (8 points)
    Mac OS X
    Oct 2, 2016 8:09 PM in response to ALANJOL

    Kenichi

    Thanks again It is Mid 2010 and that OS sounds familiar.

    I will try everything you have suggested.

    I will let you know my results after that.

    Thanks again

    ALANJOL