From owner-freebsd-hardware Wed Feb 12 14: 5: 4 2003 Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A150B37B401; Wed, 12 Feb 2003 14:05:02 -0800 (PST) Received: from sccrmhc03.attbi.com (sccrmhc03.attbi.com [204.127.202.63]) by mx1.FreeBSD.org (Postfix) with ESMTP id A7BF643F93; Wed, 12 Feb 2003 14:05:01 -0800 (PST) (envelope-from mav@wastegate.net) Received: from wastegate.net (12-226-185-104.client.attbi.com[12.226.185.104]) by sccrmhc03.attbi.com (sccrmhc03) with ESMTP id <20030212220501003004jlnqe>; Wed, 12 Feb 2003 22:05:01 +0000 Received: from MOTHER (mother.wg.local [192.168.1.5]) by wastegate.net (Postfix) with ESMTP id B468348463; Wed, 12 Feb 2003 17:07:30 -0500 (EST) From: "Doug Reynolds" To: "northern snowfall" , "William Palfreman" Cc: "hardware@FreeBSD.ORG" , "questions@FreeBSD.ORG" Date: Wed, 12 Feb 2003 17:07:01 -0500 X-Mailer: PMMail 2000 Professional (2.20.2657) For Windows 2000 (5.1.2600) In-Reply-To: <20030207180944.F283@ndhn.yna.cnyserzna.pbz> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Re: 5.25" Floppy Message-Id: <20030212220730.B468348463@wastegate.net> Sender: owner-freebsd-hardware@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, 7 Feb 2003 18:40:24 +0000 (GMT), William Palfreman wrote: >On Fri, 7 Feb 2003, northern snowfall wrote: > >> Morning, all; >> I'm trying to get a Mitsumi D509V3 1.2MB 5.25" floppy drive >> to work on FreeBSD 4.2.6. > >Cool. My father still has a 5.25" drive in production use - he has >large numbers of 5.25 disks containing old work, and maybe once a >year needs something off one of them. Works fine on his W2k box. > >> The operating system reports the drive >> is available and definitely makes contact with the drive (visual >> confirmation: LED). The issue is during read/write from the >> drive. Error message: >> fd0c: hard error reading fsbn 0 (No status) >> I have the proper drive type set in the BIOS. FreeBSD seems to >> agree according to the dmesg: >> fd0: <1200-KB 5.25" drive> on fdc0 drive 0 >> I've been doing simple read tests using: >> dd if=/dev/fd0 count=1 bs=512 | hexdump ; >> Any suggestions? > >Drive might be broken, disk might be broken, disk might not be >formated, and finally make sure you know what kind of 5.25 both the >drive and the disk are. 8088/86 machines stated off with single sided 8 >sector one @160k, then double sided 8 sector (320k), then single sided 9 >sector (180k), then double sided 9 sector (360k). That was the >standard. AT machines (i.e. 286s and later 386s & 486s) used 1.2Mb >5.25" disks. These AT drives could read 360k PC disks (PC = 8086/88, >BTW) but if you wrote to one there was a very good chance it would never >be readable by a PC again, because the 1.2Mb AT drive had a read/write >head 1/3 of the size of the 360Kb PC drive, and often the mark it left >was too small to be read by larger PC heads. For that reason I always >treated 360k disks as read-only media on 1.2Mb drives. correct; however, you can also format a 360K disk as a 360K High Density, so you could read or write to it from a 1.2M, and still read it from a 360k (but not write). --- doug reynolds | the maverick | mav@wastegate.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message