HDI HID ?

Can someone tell me about head to disk intereferance on a hard drive? This is when the read/write heads touch the platter correct? Sorry can't remember exact title but it something like that. I have had several experiences with it and know how frustrating it is to think that a hard drive is bad. I know theres no way to "fix" a hard drive but how serious is this problem? For an example I recently bought a new (July 2000) Western Digital 13.5gb hard drive, and I formatted it, and installed windows on it. I let it defragment overnight and I did not have power saving mode on the for the hard drives so they did not turn off at a certain time. I suspect this had to do somethign to do with it, but I know that almost every hard drive will run for weeks nonstop. It probably isnt a heating issue because I have a hard drive cooler in the bay. Someone just shed some light on this subject for me.
Thanks
Lee

A long time ago I remember reading about a bug in the controller on certain WD disks that could cause a head crash in certain circumstances. It was fixed a while ago https://www.sharkyforums.com/images/.../2005/06/5.gif

If your drive has suffered a head crash, its very unlikely that it will ever work again. It probably damaged the heads, platters or most likely both http://dev.www.sharkyforums.forums.relay.cool/

If you can format the drive again, it probably wasn't a head crash. The drive may have some other fault that causes it to keep losing data though. Some drives don't like an overclocked FSB either, the IDE runs at the same clock speed as the PCI bus so if this is fast nasty things can happen. I've seen partition tables on disks destroyed this way.

Fortunately head crashes are very rare, the last one I saw was on a 20Mb disk in a 386 that I forgot to park before I moved it once https://www.sharkyforums.com/images/.../2005/06/5.gif