Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!srhqla!demott!kdq
From: kdq@demott.COM (Kevin D. Quitt)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: RLL, sector remapping, and 1024 cylinders
Message-ID: <631@demott.COM>
Date: 2 Oct 90 15:53:57 GMT
References: <90274.223047RFM@psuvm.psu.edu>
Reply-To: kdq@demott.COM (Kevin D. Quitt)
Organization: DeMott Electronics Co., Van Nuys CA
Lines: 18

In article <90274.223047RFM@psuvm.psu.edu> RFM@psuvm.psu.edu writes:
>Five heads??? Seven heads????  I always thought heads can in EVEN multiples.
>Maybe you're confused because the first head is numbered zero. Try 6 or
>8, as the case may be.


    Lots of disks have an odd number of heads for data, because one head
is used for sync tracks on a separate platter.  Use of this technique
lets the disk write denser data because it can compensate for the
variations in the speed of the platters.

-- 
 _
Kevin D. Quitt         demott!kdq   kdq@demott.com
DeMott Electronics Co. 14707 Keswick St.   Van Nuys, CA 91405-1266
VOICE (818) 988-4975   FAX (818) 997-1190  MODEM (818) 997-4496 PEP last

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