installation of additional packages

[Albert DE WINT]

> You introduced a mistake here by modifying the example to something
> that doesn't make any sense.
> 
> /dev/hda6/yarror/yarrow-i386-disc1.iso does not exist. Instead,
> you should change it to where you keep the "yarrow-i386-disc1.iso"
> file.

Ok, I finally understand. Thanks, it works when I do:

# mount -o loop,ro /mnt/mandrake/yarrow/yarrow-i386-disc1.iso /mnt/cdrom

I didn't pick up the fact that actually there's two steps to take: first
mounting the device and then mounting the directory holding the iso to
/mnt/cdrom