For the noo, remove the SCSI card and either use a 50/68-pin adapter or a 50-pin drive on the built-in SCSI bus to avoid the potential hate-hate relationship between OS X and SCSI cards.
OS 9: During preparation for installation of OS X (which?), did you format the HDD from OS 9, and thereby make sure that OS 9 drivers were present so that you could go on booting into OS 9? Alternatively, did you use the option in OS X's Disk Utility to install OS 9 drivers, for the very same reason of continued bootability into OS 9? If not, you are stymied for OS 9.
OS X: Whether you partition, and whether you install OS 9.2.2 and OS X on separate partitions or the same, take care to install OS 9 first as well as its disk drivers. That way you have always a fallback for troubleshooting. If there is nothing but a dubious installation of OS X on the drive, reformatting is a desirable path to follow.
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OS 9: During preparation for installation of OS X (which?), did you format the HDD from OS 9, and thereby make sure that OS 9 drivers were present so that you could go on booting into OS 9? Alternatively, did you use the option in OS X's Disk Utility to install OS 9 drivers, for the very same reason of continued bootability into OS 9? If not, you are stymied for OS 9.
OS X: Whether you partition, and whether you install OS 9.2.2 and OS X on separate partitions or the same, take care to install OS 9 first as well as its disk drivers. That way you have always a fallback for troubleshooting. If there is nothing but a dubious installation of OS X on the drive, reformatting is a desirable path to follow.
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