[Ham-Mac] Using Mac OS 9 in Mac OS X via Classic mode

[John E Bastin]

On Sep 14, 2005, at 3:01 PM, Wade wrote:

>> I have Tiger and OS 9 on my G4 and there is only one partition. I  
>> flip back and forth between the two systems and often have  
>> applications in both running at the same time with no problem.
>>
>
>
> Is it actually possible to flip back and forth between an app  
> running on os9.x and another app running on os10.4?

OS 9 applications run, for the most part, with no problem in Classic  
mode when you're booted into Mac OS X (there are a few apps that  
won't run this way, but they are a very small minority). Printing,  
Internet access and the like can be smoothly done either using the OS  
9 application running in Classic mode or an OS X application running  
native (I have, on occasion, had print queues to the same printer  
running simultaneously in Classic and Mac OS X).

You can also easily copy and paste between Mac OS X and Mac OS 9  
applications.

> The reason I question this is because an early test using 10.1 and  
> 9.2 required a cold reboot to  go from 9.2 back to 10.1.

You didn't need to do this, even in 10.1. If you BOOTED into Mac OS  
9, then, yes, you would have to reboot the computer to get into Mac  
OS X. But you didn't NEED to boot into Mac OS 9 to run OS 9  
applications, you could have run them in Classic mode.

> Initially I could go from 10.1 to 9.2 without reboot.

You could do that then, and you can do it now. That's what Classic  
mode is all about. When booted in Mac OS X, starting an OS 9  
application will start Classic mode, and you can run the OS 9 app in  
OS 9, within Mac OS X, in Classic mode.

> I would like to use both 9.2 and 10.4 if it is possible without the  
> reboot stuff.

You can do that with no problem. Boot Mac OS X and then you can run  
your OS 9 applications without rebooting, using Classic mode.

Be aware, if you do a clean install of Mac OS X 10.4, it does NOT  
install the Classic mode interface by default. There is a separate  
installer on the DVD for the Classic mode User Interface. And you DO  
have to have a working OS 9 installation for Classic mode to work.

Hope this helps.

73,



John E Bastin, K8AJS
jbastin at sssnet.com
http://www.qsl.net/k8ajs/