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Path: sserve!newshost.anu.edu.au!munnari.oz.au!constellation!aardvark.ucs.uoknor.edu!ns1.nodak.edu!netnews.nwnet.net!usenet.coe.montana.edu!decwrl!concert!gatech! howland.reston.ans.net!sol.ctr.columbia.edu!news.kei.com!news.byu.edu!cwis.isu.edu!fcom.cc.utah.edu!cs.weber.edu!terry Newsgroups: comp.os.386bsd.questions Subject: Re: [NetBSD] installing with DOS Message-ID: <1993Jun2.205119.995@fcom.cc.utah.edu> From: terry@cs.weber.edu (A Wizard of Earth C) Date: Wed, 2 Jun 93 20:51:19 GMT Sender: news@fcom.cc.utah.edu References: <1ud4r6$l80@stimpy.css.itd.umich.edu> <1993Jun1.214740.8964@fcom.cc.utah.edu> <1993Jun2.095924.68884@cc.usu.edu> Organization: Weber State University (Ogden, UT) Lines: 27 In article <1993Jun2.095924.68884@cc.usu.edu> ivie@cc.usu.edu writes: >In article <1993Jun1.214740.8964@fcom.cc.utah.edu>, terry@cs.weber.edu (A Wizard of Earth C) writes: >> >> *NO* parttitions accessed by the DOS boot track are allowed to start past >> the one meg point... *PERIOD*. Your 386BSD/NetBSD partition *MUST* start >> before the 1M boundry if it is to allow BIOS to load the second stage boot. > >What 1M boundary? We're talking _disk_ here, not _memory_. Uh... 1M of 1K bytes... yeah, yeah, that's the ticket. 8-). This should have been "1G boundry", or even more correctly, if one is not using a translated drive, "the 10 bit cylinder maximum". You can't put BIOS accessed information (like the stage 2 boot from Julians boot blocks which come with NetBSD, or the NetBSD disklabel) outside of the accessable range for the BIOS access of the disk. So if I have a 5G disk, the 386BSD partition (or NetBSD) *must* start in the first 1024 cylinders anyway... and the full disklabel and second stage boot must reside entirely below the 1025th cylinder, period. Generally, drives that large are translated for DOS to use the maximum possible area -- 1G. Terry Lambert terry@icarus.weber.edu --- Any opinions in this posting are my own and not those of my present or previous employers.