Re: how to reformat floppies that have data on them

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On Thursday 12 April 2007 01:17, Rick Stevens wrote:
> On Wed, 2007-04-11 at 15:10 -0800, Fred Erickson wrote:
> > On Wed, 2007-04-11 at 19:29 +0200, Nigel Henry wrote:
> > > On Tuesday 10 April 2007 23:06, Mikkel L. Ellertson wrote:
> > > > Rick Stevens wrote:
> > > > > For an MS-DOS floppy,
> > > > >
> > > > >  #fdformat /dev/fd0H1440;mformat a:
> > > >
> > > > I don't think that udev creates anything but the /dev/fd0 for the
> > > > first floppy with the default settings...
> > > >
> > > > Mikkel
> > >
> > > Ok. Udev doesn't come into my equation, as I'm doing this on FC2.
> > >
> > > I've now got a floppy formatted with a low level format using the
> > > following.
> > >
> > > [root@localhost djmons]# fdformat -n /dev/fd0H1440
> > > Double-sided, 80 tracks, 18 sec/track. Total capacity 1440 kB.
> > > Formatting ... done

> > > Anyone can help with the correct syntax for using mformat to add a
> > > filesystem to this low level formatted floppy.
> > >
> > > Very frustrating.
> > >
> > > Nigel.
> >
> > Would one of the mkfs variants work for this?
>
> You could try
>
>  mkfs -t msdos /dev/fd0
>  mkdosfs /dev/fd0

Sorry that this problem is dragging on. I tried mkfs, and mkdosfs, but got 
errors again, as with mformat. See below.

root@localhost djmons]# /sbin/mkdosfs -v /dev/fd0
mkdosfs 2.8 (28 Feb 2001)
/dev/fd0 has 2 heads and 18 sectors per track,
logical sector size is 512,
using 0xf0 media descriptor, with 0 sectors;
file system has 2 16-bit FATs and 2 sectors per cluster.
FAT size is -32639 sectors, and provides 32631 clusters.
Root directory contains 224 slots.
Volume ID is 461e15e1, no volume label.
mkdosfs: unable to allocate space for FAT image in memory
[root@localhost djmons]#

Get the same "unable to allocate space for FAT image in memory" using mkfs, 
and also logwatch gave be a bunch of kernel errors when trying mformat 
yesterday, as below.

 --------------------- Kernel Begin ------------------------ 

WARNING:  Kernel Errors Present
   Buffer I/O error on device fd0, l...:  14 Time(s)
   end_request: I/O error, dev fd0, sector...:  15 Time(s)
   floppy0: data CRC error: track 0, head 0...:  18 Time(s)
   floppy0: data CRC error: track 1, head 0...:  6 Time(s)
   floppy0: data CRC error: track 2, head 0...:  6 Time(s)

 ---------------------- Kernel End ------------------------- 

I don't believe there is any problem with mkfs, mkdosfs, or mformat, but 
something is stopping them creating a file system on this low level formatted 
floppy.

Any further ideas folks.

Nigel.

btw. I looked at the other machine, that I thought I could put the firewall 
on, and that won't boot from cdrom either.


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