dd to floppies broken?

David O'Brien freebsd-hackers at freebsd.org
Sun Aug 24 13:04:10 PDT 2003


On Thu, Aug 21, 2003 at 02:39:44PM -0400, Leo Bicknell wrote:
> In a message written on Thu, Aug 21, 2003 at 02:34:21PM -0400, Brian Reichert wrote:
> >   # dd bs=8192 of=/dev/fd0 if=memtest86-2.9/precomp.bin
> >   10+1 records in
> >   10+1 records out
> >   84480 bytes transferred in 3.775199 secs (22378 bytes/sec)
> 
> fd0 is block buffered.  Try:
> dd bs=18k of=/dev/rfd0c if=memtest86-2.9/precomp.bin

Since FreeBSD 4.0 we haven't had block devices.  rfd0 is an alias for fd0
now.  You also don't need to specify the 'c' partition as the 'fd0' is
already the entire media device -- rather than just the FreeBSD portion
of it.


More information about the freebsd-hackers mailing list