Yep PATA is fine.
The reports about the flaky IDE controller on the Rev 1 stated that there were issues trying to add a second and/or larger hard disk. In my experience I couldn't add ANY disk regardless of the size. Even using third-party formatting tools like HardDisk SpeedTools to limit the UDMA mode failed to stop it from corrupting any data that was written to it. Luckily I was able to recover the original hard disk.
If you want OS9 and don't have a suitable SATA PCI card around I'd be inclined to pass on it. They're not cheap on ebay.
The reports about the flaky IDE controller on the Rev 1 stated that there were issues trying to add a second and/or larger hard disk. In my experience I couldn't add ANY disk regardless of the size. Even using third-party formatting tools like HardDisk SpeedTools to limit the UDMA mode failed to stop it from corrupting any data that was written to it. Luckily I was able to recover the original hard disk.
If you want OS9 and don't have a suitable SATA PCI card around I'd be inclined to pass on it. They're not cheap on ebay.