The damn thing does not spin up. It has been tested on a K6 AMD and it is not recognised either...
I recently bought a brand new 120GB IBM HDD. The damn thing was so quiet that I couldn't hear if it spins up or not. It didn't. After a few days of experimenting with BIOS options and diagnosis programs, I did what should only be needed for old HDDs which rested on the loft a long time: I hit it with my fist against the narrow side. And what happened ? It spun up and worked fine ever after.
So perhaps...
Bye,
Thomas