Date: Wed, 1 Apr 1998 07:28:50 -0500 (EST) From: Mike Jeays <jeays@statcan.ca> To: Mike Smith <mike@smith.net.au> Cc: Satoh Junichi <junichi@astec.co.jp>, freebsd-stable@FreeBSD.ORG Subject: Re: ATAPI Zip drive Message-ID: <Pine.SOL.3.96.980401070433.58A-100000@austral> In-Reply-To: <199803311638.IAA00460@dingo.cdrom.com>
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On Tue, 31 Mar 1998, Mike Smith wrote:
> > > wfd0: medium type unknown (no disk) ## There WAS a disk in it! ##
> >
> > No problem. The wfd driver always says so when it found the ATAPI ZIP
> > drive. I have to add code to probe ZIP correctly. (^^;
>
> The problem here is that the Zip is fairly unhelpful when it comes to
> telling you what's in the drive. In this case, the message should
> probably not be printed.
>
> > > When I attempt to mount either the CD-ROM or the ZIP drive, mount
> > > hangs, and I have to interrupt it with ctrl-C. If I do this
> > > a second time, the system crashes. (X stops. Attempts to
> > > log on through another tty don't work - characters entered after
> > > the login prompt just get echoed to the screen. It is big red
> > > switch time!)
> >
> > Hmm... I don't know why.
> > I'll test if the ZIP drive works well with a CD-ROM drive.
>
> The problem is that the ATAPI Zip drive doesn't coexist well with our
> ATAPI code and a CDROM. The Zip has highlighted a number of problems
> with the way we do ATAPI, and this is one of them.
>
> You can try moving the Zip and CDROM to separate IDE channels, which
> should cure your problem.
>
> > > If I disconnect the CD-ROM and make the Zip drive the master,
> > > things seems a tiny bit better. When I attempt a disklabel, I get:
> > >
> > > /home/mike% disklabel -r -w wfd0 auto
> > > disklabel: /dev/rwfd0c: Undefined error: 0
> > > The light on the drive blinks once.
> > It occurs when the ZIP disk has incorrect fdisk informatinos.
> > You need to execute 'fdisk wfd0' and create the FreeBSD slice on the
> > first time.
>
> You can do this another way:
>
> # dd if=/dev/zero of=/dev/wfd0 count=16
> # disklabel -rwB wfd0 auto
> # disklabel -e wfd0
> <edit disklabel to suit>
>
Thanks for the various suggestions, to Mike Smith, Satoh Junichi and John
Saunders. I can now mount msdos file systems with mount -t msdos
/dev/wfd0s4 /mnt successfully (with the CD-ROM disconnected of course).
I had less success making a FreeBSD file system, probably due to
lack of experience with fdisk and disklabel.
Information from DOS bootblock is now:
1: sysid 165,(FreeBSD/NetBSD/386BSD)
start 0, size 180000 (87 Meg), flag 80
beg: cyl 1/ sector 0/ head 0;
end: cyl 32/ sector 0/ head 0
2: <UNUSED>
3: <UNUSED>
4: <UNUSED>
/home/mike% dd if=/dev/zero of=/dev/wfd0 count=16
16+0 records in
16+0 records out
8192 bytes transferred in 0.146601 secs (55880 bytes/sec)
/home/mike% disklabel -rw wfd0 auto
/home/mike% newfs wfd0
newfs: wfd0: `0' partition is unavailable
/home/mike% newfs wfd0s1
newfs: /dev/rwfd0s1: Device not configured
/home/mike% disklabel -r wfd0
# /dev/rwfd0c:
type: unknown
disk:
label:
flags:
bytes/sector: 512
sectors/track: 96
tracks/cylinder: 64
sectors/cylinder: 6144
cylinders: 32
sectors/unit: 196608
rpm: 720
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
3 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 196608 0 unused 0 0 # (Cyl. 0 - 31)
/home/mike% disklabel -e wfd0
couldn't open "/tmp/EdDk.aNj3602": no such file or directory
There is no /usr/mdec/wfdboot on my system, and I did install all the
distributions under 2.2.6-RELEASE. I don't think I need it, as I don't
intend to boot from these disks.
Correct values of the various parameters would be a great help, please,
such as a good copy of an /etc/disktab entry. I don't know the correct
values for sectors/track, tracks/cylinder and total cylinders.
----------------------------------------------------------------
As a second question; I currently have a dual boot setup, with Win95
on wd0s1, and freebsd on wd1s1. If I move the FreeBSD disk to the second
controller to make room for the CD-ROM on the first, what do I need to
do to adjust the dual-boot configuration? I am a bit nervous about taking
this step!
Thnaks once more for all the help.
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