Here's how to do it: First, find a cool boot disk, one that lets you boot a fairly decent system from floppy. Boot from this, and then cat/proc/pci. When your Ultra/66 controller(s) come across, you'll see 3 lines of memory addresses, i.e.:
I/O at 0xd800 [0xd801]
I/O at 0xdc00 [0xdc01] I/O at 0xe000 [0xe001]
Make note of the first and second addresses (we'll call them A and B, respectively). Then, use the following parameter at boot time:
ide0=A,B+2 (in the above example, this would be "ide0=0xd800,0xdc02")
If you want to enable both controllers, use both an ide0= and an ide1= with the proper memory addresses for each. In most cases, this will let the kernel see the Ultra/66 controllers as the primary and secondary IDE controller. More info can be found at the Ultra-DMA Mini-HOWTO. Good luck!
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Make note of the first and second addresses (we'll call them A and B, respectively). Then, use the following parameter at boot time:
If you want to enable both controllers, use both an ide0= and an ide1= with the proper memory addresses for each. In most cases, this will let the kernel see the Ultra/66 controllers as the primary and secondary IDE controller. More info can be found at the Ultra-DMA Mini-HOWTO. Good luck!