Previous 1 2 Next 15 Replies Latest reply: Feb 25, 2013 11:18 AM by BDAqua
DadOfSixJon Level 1 Level 1

Well, I need to use my old 10.3 and  10.4 now and again (on two older iMacs, G4, G5) to use an older CLASSIC (9.0) software (Adobe Page Mill, in case you are wondering).

 

But I also need to use 10.5 for newer stuff. 

 

Can I have two Operating Systems on my computer installed?  How do I do that?  And how do I use each?

 

I imagine I would have to restart my computer for each use.  How do I do that?

 

Thank you!

 

 

PS:  I posted similar question on 10.3 site.   Along with my new INTEL imac (10.8) I have a G4 and G5 I need to keep going, and to be able to use the CLASSIC 9.0 now and again.  Thx!


G5 Desktop, Mac OS X (10.4.8), Also own G3 and G4 and Intel iMac
Solved by DadOfSixJon on Feb 25, 2013 8:05 AM Solved

It works:  I now have "2 macs" on one!

Reply by Kappy on Feb 24, 2013 3:54 PM Helpful

As long as the computer can boot from the OS you can put as many as you want on the computer, but each one must be separately installed in separate partitions using an appropriate installer DVD.

All replies

  • Kappy Level 10 Level 10

    As long as the computer can boot from the OS you can put as many as you want on the computer, but each one must be separately installed in separate partitions using an appropriate installer DVD.

  • DadOfSixJon Level 1 Level 1

    OK:  So, yes, I have separate install disks.

     

    Right now, I just installed the original 10.3 on one computer and 10.4 on another.  So.....

     

    I now wish to install 10.5 on each (and I have the disk for that). The 10.5 will be used mostly, but at times I will need 10.3/10.4 (and classic 9.0, which i have also installed)

     

    How do I do it?  And then, how to use it?

  • Niel Level 10 Level 10

    Restart from the Mac OS X 10.5 DVD, use the Disk Utility to repartition the drive, and install it onto each computer. To switch between versions, press the Option key at startup or use the Startup Disk pane of System Preferences.

     

    (77551)

  • DadOfSixJon Level 1 Level 1

    I shall try....

  • Allan Eckert Level 9 Level 9
    expertise.notebooks
    Notebooks

    Why do you think you need both 10.4 and 10.5?

     

    Allan

  • Niel Level 10 Level 10

    As stated in the original message, because some of the stuff he needs to use requires Classic, while some of the rest requires 10.5.

     

    (77558)

  • DadOfSixJon Level 1 Level 1

    That is true..... I still run Classic 9 on some stuff, which needs 10.4

     

    I seem to have a new problem:  I did a clean fresh install (erased disks) on my G4 with the original 10.3 disks.

     

    Now, I am trying to start up using my copy (I purchased) of Leopard 10.5.

     

    But it won't keep the DVD disk in.  Keeps spitting back out.

     

    I used this disk before, once, on this computer, and it worked fine.

     

    I have tried starting from that disk.  And just adding after boot up.  Won't keep it in.  Looks clean and fresh and new.

     

    Suggestions?

     

    j

  • BDAqua Level 10 Level 10

    Coupl of things to try...

     

    One of those CD head cleaners.

     

    Have you done a PRAM reset, CMD+Option+p+r...

     

    http://support.apple.com/kb/HT1379

     

    In fact, do 3 in a row, takes a bit of time.

  • DadOfSixJon Level 1 Level 1

    I'll try that tomorrow.  The computer does run other CDs/DVDs.  For some reason not the new OS .

  • DadOfSixJon Level 1 Level 1

    I'll try that tomorrow.  The computer does run other CDs/DVDs.  For some reason not the new OS .

  • DadOfSixJon Level 1 Level 1

    OKAY:  I am making progress.  I hooked up a seprate DVD/CD Drive and I can boot up UTILITIES from the new 10.5 disk.  Again, this current computer has a new copy of needed 10.3 (and classic) on it.

     

    I am at a place of PARTIONING THE HD into two, but I quit at this window: 

     

    It asks me if I am ready to ERASE EVERYTHING OFF THE CURRENT HD (in order to create 2 newly named HDdrives).

     

    Is this correct?  I wish to verify the partioning steps before I hit APPLY and delete every thing off my HD.

     

    My goal, again, is to seprate part of my HD in order to use the 2nd operating system --- the newer one. 

     

    So, in Disk Utility,  I click on the current HD, and click on PARTITION.  Then it asks me to choose a VOLUME SCHEME. 

     

    I assume, 2 paritions?

     

    It asks me to choose size and name them.  Then apply.  But then it tells me that I will then delete all on my HD. I am doing this correctly?

     

    Oh, it also asks me to choose FORMAT.  I assume the default one (Extended/Journaled)

     

    any guidance before I proceed?

    J

  • DadOfSixJon Level 1 Level 1

    I found this....

     

    http://www.macworld.com/article/1164643/live_partition.html

     

    Which I think will answer my own question on partitioning....  let's hope....!

  • BDAqua Level 10 Level 10

    t asks me if I am ready to ERASE EVERYTHING OFF THE CURRENT HD (in order to create 2 newly named HDdrives).

     

    Is this correct?

    Yes on older OSX versions you can only partition by erasing everything.

     

    I think that link only applies to newer OSX versions.

  • DadOfSixJon Level 1 Level 1

    It works:  I now have "2 macs" on one!

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