using dd to dump an image file to a floppy

Yuri Grebenkin breath at
Mon Apr 16 19:09:36 UTC 2007

On Mon, 16 Apr 2007 14:24:14 -0400
"John" <dcbuddy at> wrote:

> Everyone,
> I'm trying to make boot and kern floppies, using dd, as follows:
> Cdrom is mounted, floppy is mounted (and I have test written to it)
> I have the 6.2 disk 1 in the cdrom drive (the "floppies" directory contains
> the disk images I'd like to write)
> I'm in the /cdrom directory
> When I try to "disk image" the boot.flp file, here's what happens:
> # dd if=floppies/boot.flp of=/dev/fd0
> dd: /dev/fd0: Operation not permitted
> I keep getting the "operation not permitted" message.
> As I said before, I CAN write to the fd0 (floppy drive), and I am logged in
> as "root".
> Anyone know what I'm doing wrong?

Maybe you just unmount your floppy before doing dd if=floppies/boot.flp of=/dev/fd0.
It's blocked.

> Thanks,
> John
> So here's to the role of time, patience, and reflection in our lives.  If we
> believe it is better to build than to destroy, better to live and let live,
> better to be than to be seen, then we might have a chance, slowly, to find a
> satisfying way through life, this flicker of consciousness between two great
> silences.
> _______________________________________________
> freebsd-questions at mailing list
> To unsubscribe, send any mail to "freebsd-questions-unsubscribe at"

More information about the freebsd-questions mailing list