Complex sentence: In the context of hard disk drives, stiction refers to the tendency of read/write heads to stick to the platters, preventing the disk from spinning up and possibly causing physical damage to the media.
Split into simpler sentences: In the context of hard disk drives, stiction refers to the tendency of read/write heads to stick to the platters. Once the heads have stuck to the platters, the disk will be prevented from spinning up and can cause physical damage to the media.