On Dec 27, 2008, at 11:45 AM, Michael B. in Cincinnati wrote:

> The funny thing is that if I click on an OS9 app, it loads and runs.

This isn't funny, this is normal behavior for Classic applications  
under OS X.

> It just won't load at boot like it used to.

I'm still not following you here.

I think you may be saying "I'm booted in OS X, but when I click on an  
OS 9 app instead of seeing the OS 9 (Classic) boot process window  
open, I'm having the OS 9 app load and run directly? If this is the  
case, then you've got Classic set up to load automatically on boot and  
not show the boot window. This means that Classic is already running  
with when you click on the OS 9 app. You'd adjust this behavior in  
System Preferences>Classic. You'd need to uncheck the boxes "Start  
Classic when you login" and "Hide Classic when starting" under the  
"Start/Stop" tab.

If you are trying to boot OS 9 directly either by selecting it in  
Startup Disk, using the Option key selection, or holding the "9" key  
at startup, and it's not booting, this could be many things. Booting a  
SATA PCI card HD is dependent upon firmware on the PCI card, not all  
SATA PCI can boot in Macs. The firmware on the card might not support  
OS 9 booting, it may be OS X only? If your OS 9 and OS X are on the  
same partition (I believe yours are cloned together?) then the OS 9  
System can become unblessed and not boot. Older versions of Carbon  
Copy Cloner have a "Bless" function for blessing the System folder,  
but I'm not sure if the newest CCC has this function? You'll need to  
be sure the OS 9 System is blessed to be bootable.

I think the time of OS 9 and Classic is over. You should look for a  
native OS X program to replace whatever OS 9 programs you're still  
using. OS 9 and Classic are more burden than any PATA HD.

If you're trying to squeeze out performance, I'm very dubious that not  
using the PATA bus will result in any appreciable performance gain?  
For performance, I'd suggest you get two identical SATA HDs and stripe  
them in a RAID 0 set, then backup this set using a single internal or  
external HD (use the PATA bus if necessary, although a Firewire  
external SATA based HD may be cheaper than a large PATA HD?). The  
single backup HD needs to be twice the size of the two RAID set  
individual HDs. To get the full speed advantage of RAID 0 each HD in  
the pair needs its own dedicated bus, you can't place both sharing the  
same bus. RAID 0 can nearly double the HD access speed, but you need  
reliable backup.

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