indeed i did oversee that
is it on the mainboard specified in your signature that you're installing it? if so i suppose they are ata drives or do you have an sata controller ? can you tell us which one if so, because i had also a sata controller for which i had to install a supplemental driver
My system has only one (1) internal hard drive. It is a 500Gb SATA. It is GUID partitioned with Win7, Leopard 10.5.8 and data.
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *465.8 Gi disk0
1: EFI 200.0 Mi disk0s1
2: Microsoft Basic Data 140.0 Gi disk0s2
3: Apple_HFS Production 140.0 Gi disk0s3
4: Apple_HFS Media 185.3 Gi disk0s4
I have SnowLeo (432) installed on an external 40 Gb PATA drive which is connected via USB. I have a second external 40Gb PATA drive with Leopard 10.5.8 installed on it. When I boot the USB connected drive with 10.5.8 on it I see the internal SATA drive and it's partitions are automatically mounted. When I boot the drive with SnowLeo the internal drive is not detected.
Are you sure you selected AHCI in bios mode for your sata ? For snow leopard it doesn't work as IDE....
I hope it helps !
My system is old - see in my sig - and when I check the BIOS settings I see only enable/disable for the SATA settings. There is no mention of AHCI or IDE. I assume therefore that it is IDE
Still, it is working well in Leopard so I guess there is some hope for an additional / patched kext to make it work for SnowLeo.