fedora core 4: no fd0u1680?
Jeff Vian
jvian10 at charter.net
Sat Sep 30 16:14:04 UTC 2006
On Sat, 2006-09-30 at 00:23 -0400, fedoralist at subtropolix.org wrote:
> Jeff Vian wrote:
> > On Fri, 2006-09-29 at 17:24 -0400, fedoralist at subtropolix.org wrote:
> >
> >>Joe Smith wrote:
> >>
> >>>fedoralist at subtropolix.org wrote:
> >>>
> >>>
> >>>>I've been using core 4 for quite some time now and this is the first
> >>>>time i've had to think about device nodes. I'd like to mount a floppy
> >>>>that's formatted to 1680 density but can't figure out how the device
> >>>>nodes work. ...
> >>>
> >>>
> >>>I hate to ask, but did you try it? The fd0...fdn devices are supposed to
> >>>auto-detect the actual capacity and density of the disk in the drive.
> >>
> >>Yup. After reading the udev stuff.
> >>
> >>[root at apollo ~]# mount -t vfat /dev/fd0 /media/floppy/
> >>[root at apollo ~]# ls /media/floppy/
> >>?.? 8v??.?? fp??????.?1? ??syslin.ux ???.u??
> >>????????.??? }???.?b? f?>?tf??.t?? ????????.?t? ???}????.u}?
> >>?.??> ??b?6?t?.??? f!?txf?.? ???????.t?= ???????u
> >>?<??@???.??? b??????u.??? ???h.??? ?????!?t.?aq u????u?.???
> >>???.??? ??cbt.^?f ?>lu.?hu &?tf??4u.?.? _w??p??.??_
> >>??.??? dlinux s.ys? pamsu7f?.>du ?t??< v.?n?
> >>0uf???8u.f)? f??bss.??? p??s??.??? t??x?.??x
> >>
> >
> > The 1680 density is NOT a dos/vfat format. IIRC that is a MAC format
> > and needs to be mounted as such for proper access.
> >
> >
>
> Not true. In fact, Microsoft used to use 1680 density for its install
> disks. I've no idea if it was ever used for Macs, though. In any case,
> it mounts fine on core 3 with -t vfat.
>
I dimly remember that Win95 (the last version that did a floppy install)
had higher than standard density diskettes for the install. I never did
know exactly what density it was, and the floppy install for windows
disappeared after that use.
> The example i posted above was to show that the disk was not
> automagically detected by udev as 1680. That is what i would expect to
> see on my core 3 box if i used /dev/fd0 (because it's the wrong density).
>
> core 3:
> [root at poseidon ~]# mount -t vfat /dev/fd0u1680 /media/floppy/
>
> works fine.
>
> core 4:
> [root at apollo ~]# mount -t vfat /dev/fd0u1680 /media/floppy/
> mount: special device /dev/fd0u1680 does not exist
>
With Core 3 and earlier all the possible device types were created
in /dev. In later releases they saw fit to remove them and they now
have udev and hal to do the automatic configuration for you.
I bet if there was a rule for udev to create the device you could get it
to mount under FC4 & FC5.
Alternatively, if you know the specific characteristics of the device
you could use mknod to create it manually.
> b
>
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