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From: mvadh@cbnews.ATT.COM (andrew.d.hay)
Newsgroups: comp.sys.att,unix-pc.general
Subject: Re: hard disks for 3b1
Message-ID: <11654@cbnews.ATT.COM>
Date: 22 Nov 89 12:20:10 GMT
References: <1145@becker.UUCP>
Reply-To: mvadh@cbnews.ATT.COM (andrew.d.hay,54242,wi,1d007,508 374 5484)
Organization: AT&T Bell Laboratories
Lines: 28

In article <1145@becker.UUCP> bdb@becker.UUCP (Bruce Becker) writes:
[]
"					       You
"	can't reference more than 1024 tracks without
"	the P5.1 upgrade, and you can't reference
"	more than 8 heads without the WD2010.

this is backwards; it's the 2010 that gives you access to more tracks,
and the P5.1 logic that adds access to more cylinders.

"					      The
"	chip doesn't require the upgrade, & the upgrade
"	doesn't require the chip.

true.

"				  It is possible to use
"	RLL drives but you will only get 2/3 of the
"	rated capacity, since the tracks will be
"	formatted with only 17 512-byte sectors.

also true.  the unix-pc only supports MFM...

-- 
Andrew Hay		+------------------------------------------------------+
42 Authority		|	  Zaphod Beeblebrox is now appearing in	       |
AT&T-BL Ward Hill MA	|    "No S*x Please, We're Amoeboid Cingatularians"    |
a.d.hay@att.com		+------------------------------------------------------+