ThinkPad 600 hdd spindown

[Riccardo Mottola]

Hi,

I experience very short-cycling of the hard disk. It appears to spin 
down very aggressively. But what happens is that it spins up. Just type 
"ls" or so. Then it will spin down however within seconds, yielding a 
continuous spin-up spin down. This happens when running on mains (the 
battery is dead anyway).

Are there settings about this? Or is it all coming from the BIOS where I 
don't see such settings (the older IBM BIOSes were very simple).

What I find wrong is the very short time to spin down again, something 
like 10-15 seconds!

Riccardo