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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msuinfo!gmi!zombie.ncsc.mil!MathWorks.Com!europa.eng.gtefsd.com!howland.reston.ans.net!swrinde!sgiblab!gatekeeper.us.oracle.com!barrnet.net!oz.cdrom.com!oz.cdrom.com!jkh From: jkh@freefall.cdrom.com (Jordan K. Hubbard) Newsgroups: comp.os.386bsd.questions Subject: Re: dos 6.2.2 & FreeBSD1.1.5 Date: 04 Oct 1994 00:10:32 GMT Organization: Walnut Creek CD-ROM Lines: 19 Message-ID: <JKH.94Oct3171033@freefall.cdrom.com> References: <36j05b$c1i@pendragon.jsc.nasa.gov> <DEAN.94Oct1162243@deanstoy.wa.com> <PHILS.94Oct3095729@satori.tv.tek.com> NNTP-Posting-Host: freefall.cdrom.com In-reply-to: phils@satori.tv.tek.com's message of 03 Oct 1994 16:57:29 GMT In article <PHILS.94Oct3095729@satori.tv.tek.com> phils@satori.tv.tek.com (Phil Staub) writes: Then I started thinking about how DOS would have to deal with this big disk if it were to be given the entire chunk to manage. Given that DOS seems to insist that there can be no more than 1024 cylinders, I figured it must be re-figuring the disk geometry into something more to its liking. So, I got a brainstorm. I came up with the idea to use DOS 6.xx's MSD.EXE program to see how DOS would treat the disk. Doing this, I found that DOS sees it as 1006 cylinders, 64 heads, 32 sectors per track, not the 2700 cylinders, 9 heads, 84 sectors per track The problem you ran into was a longstanding BIOS limitation of 10 bit cylinder addresses. ALL of this is discussed in the FAQ, and it's a pity that you didn't read it before starting your long and lonely saga - it would have saved you a lot of work! :-( In any case, I'm glad that you managed to finally get FreeBSD working.. Jordan