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- From: billh@hplsla.hp.com (Bill Harris)
- Date: Thu, 21 Jan 1993 20:11:09 GMT
- Subject: Re: Winchester drive question
- Message-ID: <11060017@hplsla.hp.com>
- Organization: HP Lake Stevens, WA
- Path: sparky!uunet!usc!sdd.hp.com!col.hp.com!news.dtc.hp.com!hpscit.sc.hp.com!cupnews0.cup.hp.com!news1.boi.hp.com!hp-pcd!hplsla!billh
- Newsgroups: comp.sys.apple2
- References: <15JAN199319281777@utkvx3.utk.edu>
- Lines: 24
-
- Oh, this is going back a while. I seem to recall that IBM introduced
- Winchester drive technology. Before that, you only removed the platter(s)
- (and their associated spindle and housing/dust cover) when you took the
- disk out of a removable hard drive. That caused problems, in that dust
- could get on the disk surface, wreaking havoc, especially if you wanted to
- design a disk with heads that flew very low over the surface.
-
- The contribution of the Winchester technology was that the platters,
- spindle, bearing and heads were all enclosed in an air-tight package that
- was removable. That way, IBM could ensure the quality of the air (and size
- of dust particles) in a removable drive.
-
- It seems like this occurred in the mid 1970's.
-
- Of course, I could be wrong on any of this. If so, I'm sure someone will
- correct my memory.
-
- Bill Harris
- billh@lsid.hp.com
-
- Hewlett-Packard Co.
- Lake Stevens Instrument Division ms/330
- 8600 Soper Hill Road
- Everett, WA 98205-1298
-