>  > 
>  > [1] I suspect the 'escalator' algorithm is actually used.
> 
> Ah, "escalator" being "seek up, reset to beginning, seek up again"?

Yep - IIRC it has slightly better 'worse case' behaviour.
Also the 'down' path wont actually work too well - you would
want to write sectors for a given track in increasing order.

OTOH with modern disks that have 'voice coil' head motors
rather than 'stepper motors' track-track seek times are
not as dependant on the number of tracks being skipped.

	David

-- 
David Laight: david@l8s.co.uk