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SamBushman

macrumors newbie
Original poster
Jun 25, 2025
5
1
Hello,
I have recently upgraded my Power Macintosh 8600 with a Sonnet Crecendo G4 upgrade card. After upgrading my OS to MacOS 9.2.2 I wanted to install OSX Tiger along side it.

I downloaded XPostFacto 4.0 and copied the app into the root of my OS9 hard disk. I set up a second hard disk with 2 partitions:
6GB for OSX
24GB for data storage

I am attempting to install from the Tiger CD install burned to 4 CD-RWs. When I select my OSX partition and the install CD from XPostFacto, it appears to succeed at setting up the partition for the reboot/installation. On reboot, i get the mac chime, then the machine sits with no video signal for a minute or two, then I boot back into OS9.

If i burn a "bootable" iso of the Tiger Disc 1 CD instead i get a blank grey screen post chime (no happy mac or anything). No further changes/activity takes place. The install process doesn't appear to progress at all. If I remove the CD and reboot the Power Mac will boot into OS9 as if nothing happened.

I'm hoping i can get some advice on how to identify what I'm doing wrong with the install.

FWIW, I am using a SCSI2SD 5.0 configured with my OS9 drive as device 0 and the OSX/Storage disk as device 1.

Thanks for any help
 
Can you enable verbose logging (boot-args? -v) in XPostFacto to see more information during boot?
 
I enabled "Verbose" in the options menu of XPostFacto, but didn't see any change in behavior. Should I expect that to be printing to my screen or something?
 
1d787300-3c1a-4dba-8e80-d312fce43d32.jpg

For funzies, I also tried using the Sonnet PCI X Installer to install 10.2. The installer found all the necessary files, but I was met with this on reboot.
 
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Are you using onboard graphics or a PCI GPU? Check the correct video output is selected in XPostFacto
 
I am using a PCI GPU. Ok, so i had some of the OpenFirmware settings set incorrectly. Now i'm getting verbose output. It seems to be printing "can't LOAD from this device" over and over again.
0626252043.jpg
 
Ok, I did some googling around and found this article:

It sounded similar to my symptoms, so I had to slow down the CPU in the XPostFacto settings. After that, things started booting!
 
Just for kicks, can you try using your OS9 volume as the OSX "helper" boot volume? So in other words, allow XPostFacto to install BootX on your "known to boot" OS9 volume instead of your designated OSX/Storage drive.

Once you boot into the OSX install CD via this helper volume you can install onto the 6GB OSX volume, but you would need to use XPostFacto to switch between installations of OS9 and OSX via that device 0 drive.

device 0
--> has OS9 install
--> has BootX helper which gets the boot process far enough to reach across to the CD and continue on from the install system

device 1
--> 6GB OSX (to be installed)
--> 24GB storage

Something to note with this is you'll want to have an OS9.2.2 boot CD or alternative OS9.2.2 HDD to boot from as it is likely you'll end up in loop where:

1. device 0 BootX helper is the "blessed" boot system
2. device 0 OS9 "System Folder" is no longer blessed
3. device 1 doesn't want to boot (for whatever reason) -- this is where you would see the "No go" symbol as you've shared

If you get stuck in this loop, then even a PRAM reset won't get you back to your working OS9 install – you need to boot off your OS9 CD, then go to Startup Disk and specifically re-"bless" the OS9 System Folder.

I've had a similar scenario on my Beige G3, which is setup with OS9, Jaguar, Panther and Tiger across 2 different (IDE) drives and several partitions.
 
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