WD 10EARS Jumper Settings

aggressive power saving is causing the drive to go offline randomly… otherwise is ok Apart from the officially documented settings for 1-2, 5-6 and 7-8 for the caviar green drive, what does 3-4 do? In my case it seems to have made it into a master drive and seems to have solved the problem. Combinations of jumpers seem to make sense … does anyone have a detailed explanation? Thanks A. Mani

Define “go offline”.  Also there is no such thing as master/slave with SATA.