Hello,

> Regarding the Mac mini, I'm curious about something. Apple says that there 
> is only one ATA bus:
> 
> http://developer.apple.com/documentation/Hardware/Developer_Notes/Macintosh_CPUs-G4/MacMiniG4/index.html
Strange.
 
> But in Matt Thomas' mini dmesg, there seems to be two busses:
> 
> wdc0 at obio0 offset 0x20000 irq 24: DMA transfer
> atabus0 at wdc0 channel 0
> ...
> wdc1 at pci2 dev 13 function 0: interrupting at irq 39
> atabus1 at wdc1 channel 0
Yes, same as in my iBook G4

> So the first bus, like the two extra non-fast USB busses, is just unused, 
> right?
Seems so. In the iBook it's a fast ( ATA/100 ) and a not so fast ( ATA/33) channel, the harddisk is connected to the fast one, the DVD/CDRW drive hangs on the not so fast one. So in the mini both drives share the same bus? Seems odd. Maybe they didn't have enough room on the tiny mainboard for a 2nd ATA connector?

have fun
Michael