Date: Thu, 26 Oct 1995 17:01:47 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: bde@zeta.org.au (Bruce Evans) Cc: bde@zeta.org.au, msmith@atrad.adelaide.edu.au, hackers@FreeBSD.org, lenzi@cwbone.bsi.com.br, terry@lambert.org Subject: Re: boot disk.... Message-ID: <199510260731.RAA10545@genesis.atrad.adelaide.edu.au> In-Reply-To: <199510260714.RAA11866@godzilla.zeta.org.au> from "Bruce Evans" at Oct 26, 95 05:14:10 pm
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Bruce Evans stands accused of saying: > The DOS BPT seems to be named the BPB (B = block). I often confuse this > with the BPT. Now I don't know what you mean by the BPT. There is the > BIOS disk parameters table pointed to by vector 0x1E, but that is only > for floppies and changing it has little effect. Booger; a thinko on my part. Indeed, the equipment list doesn't have anything to say about harddisks. > I'm not sure about the BIOS, but for IDE drives the drive keeps a private > copy and you can;t expect the BIOS to reprogram that for every i/o. It > might work to change the hard disk parameters pointed to by the int 0x41 > and/or int 0x46 vectors and then tell the BIOS to initialize the drive > using int 0x13, ah = 9. Indeed; I can imagine what something like DiskManager would think about that 8( > Bruce -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] My car has "demand start" -Terry Lambert UNIX: live FreeBSD or die! [[
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