Skip navigation

How do I run OS X Leopard on a OS X Snow Leopard iMac?

339 Views 5 Replies Latest reply: Nov 22, 2012 11:42 AM by Neville Hillyer RSS
mortensen303 Calculating status...
Currently Being Moderated
Nov 20, 2012 2:30 PM

My issue goes as follows:

I recently purchased a used drum scanner and the software controlling it (ColorQuartet) runs up until OS X 10.5.8 only.

I use an iMac that shippied with OS X 10.6.8 (see system details below). Now, is there any possible - and advisable - way that I can run Leopard on my Snow Leopard machine?

 

I have partitioned my drive and made a 20GB OS X leopard partition. When I tried to install it (from a DVD), the installer ran until reboot (for install)... then nothing happened and I had to reboot again with option key pressed and chose to boot from HD rather than DVD... Since then, my startup has been slower - it dwells with a blank screen for 20 secs before the apple logo shows up. Apart from that, no noticable harm has occured to the system.

 

I do know, that it is not recommended to run a previous version of the OS than what shipped with the system. Is there any workaround here, that does not involve investing in another Mac for the household (there is already three, and no, none of them runs Leopard).

 

Thanks in advance for any input.

 

  Model Name:          iMac

  Model Identifier:          iMac11,3

  Processor Name:          Intel Core i7

  Processor Speed:          2.93 GHz

  Number Of Processors:          1

  Total Number Of Cores:          4

  L2 Cache (per core):          256 KB

  L3 Cache:          8 MB

  Memory:          8 GB

 

note: the reason ColorQuartet does not work with newer version of OS X is presumably because of changes in Quicktime.

Mac OS X (10.5.8)
  • Klaus1 Level 8 Level 8 (43,305 points)

    I recently purchased a used drum scanner

    How quaint!

     

    Now, is there any possible - and advisable - way that I can run Leopard on my Snow Leopard machine?

    No.

     

    the reason ColorQuartet does not work with newer version of OS X is presumably because of changes in Quicktime.

    Then it may still work if you use Quicktime 7 instead of 10. If it can't even use QT 7 then get rid of it.

     

    Mac OS X 10.6 includes QuickTime versions 10.0 and 7.6.3. The QuickTime 7 player will only be present if a QuickTime Pro key was present at the time of installation, or if specified as part of a custom install, or individually downloaded:

     

    http://support.apple.com/kb/dl923

     

    Snow Leopard update 10.6.4 included an update to 7.6.6 (if installed). You can install it from the above link  even though it says for 10.6.3. It's the same version of QuickTime Player 7.6.6.

     

    (Only QuickTime Player 7.6.3 or 7.6.6 can be updated to "Pro".)

     

    A Mac OS X v10.6, OS X Lion, and OS X Mountain Lion-compatible version of QuickTime Player 7 is available for use with older media or with AppleScript-based workflows. QuickTime Player 7 can be used to playback formats such as QTVR, interactive QuickTime Movies, and MIDI files. Also, it supports QuickTime 7 Pro registration codes for access to QuickTime Pro functionality.

  • Klaus1 Level 8 Level 8 (43,305 points)

    can I safely removeQuickTime10 from my machine?

    No, do not do that.

     

    You need to find a way of pointing ColurQuartet to QT 7.

     

    (btw ColorQuartet is the only software able to communicate with the scanner...)

    With that old scanner, yes. There are other scanners!

  • Neville Hillyer Level 4 Level 4 (1,845 points)

    I don't use OS X on an Intel Mac but I would have expected it to be happy running Leopard on one partition and Snow Leopard on another. Perhaps somebody with more experience can explain why this does not work.

Actions

More Like This

  • Retrieving data ...

Bookmarked By (0)

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.