installing 4.9-R: READ command timeout

[Jon Drukman]

i'm trying to install 4.9-RELEASE from the bootable CDROMs.  i can't get 
very far because it hangs during the boot process with the following error:

ad3: READ command timeout tag=0 serv=0 resetting
ata1: resetting devices...

and that's it.  total freeze.

i've done a little googling and most of the suggestions i've found 
center around drive cabling/jumpering.  however, the system is totally 
functional under Windows XP (that's how i'm writing this message) so i'm 
pretty sure all the hardware is wired up properly.

ideas?

hardware: asus a7n8x motherboard, athlon xp 2200+, onboard IDE

primary master: western digital wd1200JB
primary slave: yamaha crw-f1e cd-rw
secondary master: western digital wd1200JB
secondary slave: ibm dtla-307045



-jsd-