The hard disk is more sensitive than a diskette. The smallest pieces of dust or smoke can damage the disk. Data may also be lost if a computer is subject to rough handling. Always move the computer with care. Most hard disks provide a designated landing zone on which the disk head can be parked when moving the system to reduce the risk of a head crash.
Some systems automatically park the head each time the system is turned off.
The documentation for the computer should include specific instructions for protecting the hard disk during a move. Another potential problem for hard disk usage is fragmentation. Operating system instructions include procedures for reducing fragmentation. The information recorded on a hard disk is subject to error, or even totally lost, if a device that emits a magnetic force is placed near the computer's hard disk. This also applies to electronic records stored on all types of magnetic media.