5.25" Floppy disk drive not recognized

[Roderick]

The problem is perhaps more than the block size: the low level
formatting of the disk.

On Fri, 14 Aug 2020, Christoph Kukulies wrote:

> But when I’m trying to
> d# dd if=/dev/fd0 of=fd_dump
> dd: /dev/fd0: Device not configured
> 0+0 records in
> 0+0 records out
> 0 bytes transferred in 0.000252 secs (0 bytes/sec)
> #
>
>
> Do I have to specify  special blocksize?