From owner-freebsd-hackers Fri Sep 8 05:56:42 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id FAA05612 for hackers-outgoing; Fri, 8 Sep 1995 05:56:42 -0700 Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id FAA05605 for ; Fri, 8 Sep 1995 05:56:32 -0700 Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id OAA07483 for ; Fri, 8 Sep 1995 14:52:58 +0200 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id OAA24755 for freebsd-hackers@freefall.freebsd.org; Fri, 8 Sep 1995 14:52:58 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.6.12/8.6.9) id OAA12898 for freebsd-hackers@freefall.freebsd.org; Fri, 8 Sep 1995 14:26:27 +0200 From: J Wunsch Message-Id: <199509081226.OAA12898@uriah.heep.sax.de> Subject: Re: higher density diskettes To: freebsd-hackers@freefall.freebsd.org Date: Fri, 8 Sep 1995 14:26:27 +0200 (MET DST) Reply-To: freebsd-hackers@freefall.freebsd.org In-Reply-To: <199509080645.QAA01164@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Sep 8, 95 04:15:44 pm X-Phone: +49-351-2012 669 X-Mailer: ELM [version 2.4 PL23] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Content-Length: 599 Sender: hackers-owner@FreeBSD.org Precedence: bulk As Michael Smith wrote: > > Does the BIOS actually rangecheck the sector numbers you try to read? > Talk about a nuisance 8( (As suggestions go, it wasn't a bad one) The BIOS has rather conservative assumptions about the sectors to load (it uses some table in the BIOS data area to initialize the FDC). It's unable to handle floppies like: size: 1024 - 512 - 2048 - 8192 sector ID: 131 130 132 134 (This is OS/2's XDF format.) -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)