To make the transition from OS 9 to OS X as painless as possible, here are some suggestions for configuring a dual-boot system that will support both Pro Tools 6 on OS X and previous versions of Pro Tools 5 on OS 9.
There are 3 ways to configure OS 9 along with OS X on the same computer:
Both OS 9 and OS X on the same drive on a single partition. This is the easiest method, and typically the way Apple Computers ships their OS 9 compatible computers.
Each OS on a separate partition of a single hard drive. This is a better way to go if you have only one internal hard drive. If each partition has a discrete OS (OS 9 on one partition and OS X on the second) then file sharing between the OS’es will be minimized.
Each OS on a separate hard drive. Installing OS 9 and OS X on separate hard drives is the safest way to allow OS 9 and OS X to co-exist on the same system. This method allows you to completely unmount or disconnect either hard drive when doing maintenance or OS updates.
Each of the above methods should work, however, minimizing the interaction between the two OS’es should result in better performance in the long run (especially considering the unknowns that may come along with future OS X updates).
If you already have your drive formatted with OS 9 installed you will need to simply boot from the OS X Installation CD and follow the onscreen prompts.
If you want to do a fresh installation of OS 9 and OS X on a single empty drive:
1. Boot from OS X Install CD by holding down the ‘C’ key on startup.
2. In the menu bar, go to the Installer menu and choose Open Disk Utility.
3. In Disk Utility select the hard drive you want to partitition and click the Partition tab.
4. Under Volume Scheme choose the number of partitions you want to create on the drive. 2 partitions will be sufficient in most cases, but if you intend to record audio to the drive make a separate partition for that as well.
5. Name each partition and for format choose Mac OS Extended (HFS+).
6. Make sure the box for “Install Mac OS 9 Disk Drivers” is checked. Otherwise the drive won’t show up when booted up in OS 9.
7. Click on Partition when you are ready.
8. Quit Disk Utility and continue on with the OS X Installation.
9. After installing OS X, or upgrading your OS X version, run “Repair Disk Permissions” from the following location: Applications/Utilities/Disk Utility/Disk First Aid tab.
10. Afterwards boot from the OS 9 Installation CD and install OS.