Regardless of the life of a hard drive, the heads cannot be 'flying' forever. Anytime a drive is not powered, the heads are in contact with the platter. It makes sense, when the heads are resting on the platter, to ensure that data isn't under it. This is where the term landing zone comes from. Putting the heads there is known as head parking. Typically, heads are parked in a landing zone that is one step beyond the last area of data storage. In recent years, parking the heads is an automatic process that happens on power down. Appropriately enough this is called auto-parking.
A head crash can occur from more than contamination. Physical shock can cause a crash. Something notebook makers must concern themselves with. So, with a read/write head made, it has to go somewhere. If it doesn't move, you basically have a magnetic head stuck in one position, like a cassette deck. How it moves is the next topic.
Home - Table Of Contents - Contact Us
CertiGuide to A+ (Core Hardware) (http://www.CertiGuide.com/aplush/) on CertiGuide.com
Version 1.0 - Version Date: December 6, 2004
Adapted with permission from a work created by Tcat Houser.
CertiGuide.com Version © Copyright 2004 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.