hp9826 disk problems

Hi, Is it me or is there a problem with some of the disk images at hpmuseum.net. I am interested in the HP Basic 3.0 software disks for the 200/300 series computers. The description says that they are ss/dd images but my hp9121 wont read them. In fact it will only read a couple of the disk images described as ss/dd under software for 200/300 series. I also notice that when running teledisk 2.16 on these 'problem' disks that it is writing to both sides! The only ones that I can read are the System Test and HPL 2.0 disks both of which are also described as ss/dd. I do have a hp9133h which has a double sided floppy but since the HD has died I cant access the floppy anymore. Is there some way of jumpering the controller so that it ignores the hard disk and only reads the floppy? Alternatively could somebody send me a true ss/dd disk image of HP Basic 3.0? Roman 'Temporarily stopped roamin in the gloamin!' removethisroman.szeremeta at actewagl.net.au