WD Green drives are notorious for having a very aggressive power saving mode that parks the heads right in the middle of doing work.
Try testing by using hdparm -B 255 and hdparm -B 254
If either of those solve your problem, then there is a package you can install to set that on boot. Can't think of the name offhand.
Greg
Greg thanks. I think the culprit was MotherBoard which (as I said in another thread) was detecting only 1/2 RAM. I have replaced the MoBo with a spare one and its working fine. The possibility is I had 8GB RAM and since I was running resource hungry applications such as Thunderbird, Liferea and sometimes copys data in GBs the RAM was full (I was getting only 4GB out of 8 and most of the times the resources were using around 3+GB RAM). Is that a possibility that low RAM can lead to HDD churning? Seems I can mark this thread solved. BTW, loving openSUSE more and more everyday. Swapnil -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org