Stiction

---snip Hi I was told that the early ones had this problem but it was fixed early. I could imagine that some of the lubricants that they used on the surfaces could have contributed to stiction. Although, the heads do fly when at speed, they do have to drag on the surface. For this they also put a very thin layer of lub on the surfaces. While the smack from the side is relatively safe, jurking a drive with a rotational force is actually more dangerous. Most heads have a sharp edge on the back of the head. Rotating the disk backwards causes it to dig into the surface. This tends to take out several tracks at the same location and if the pieces are small enough, they can lodge under the heads. Larger chunks are just wiped off and rarely cause problems. Still several sectors are damaged. If the motor is enegized at the time, it will usually keep from back rotating but if powered down, it can be more dangerous. Dwight _________________________________________________________________ MSN Shopping has everything on your holiday list. Get expert picks by style, age, and price. Try it! http://shopping.msn.com/content/shp/?ctId=8000,ptnrid=176,ptnrdata=200601&a…