OS X & 9 on 2 partitions

[LeeBrix]

I prefer OS X and OS 9 on 2 HD partitions. Works well for me.

However, why (or why not) is this recommended? ....even though Apple installs both OS's on the same drive/same partition and this seems to work well for people.

Can someone enumerate the reasons why 2 partitions is a better way to go?

[thanks]

[Phil St. Romain]

One of the best reasons for two partitions is that any damage to the hard drive resulting from a hard system crash won't affect the other OS.

In the newer computers, you can also choose reboot into a partition by holding down on the option key while restarting. This is an easy way to boot into OS 9 if X has crashed, or vice versa.

[griffman]

I chose to use two (three, actually) partitions in order to separate my "stripped" OS 9 for Classic from my "real" OS 9. One partition has OS X and stripped OS 9, the other has my full OS 9, and the third is for Apps and Utils which I install - I leave the stock stuff where it is.

Of course, since I haven't booted in any version of OS 9 in multiple months, perhaps it's time to kill the "full" version and get some drive space back!

-rob.