On Sep 3, 2011, at 14:58 , Gert van Santen wrote: > Has anyone else done defragmentation on non-SSD Mac drives? How dit it work for you? Try to clear up to about 50 gigs, then defrag. HFS+ tends to choke when you have less than 10% free space and use the drive a lot. -- Joost Schuttelaar The Hague, NL