Getting new harddrives for old RISCOS machines is a problem, firstly new IDE disks are a rarety 
RISCOS 3.1 understands only harddrives which are not bigger than 500 Mbyte. During my search I did 
found that compact flash drives gives issues. Only very specific types work. I tried a couple of 
IDE to SATA convertors and they work. Although with a small modification with a bridge between 
 
32 and pin 30. Also HForm needs to modified I have added an ADF image and the zip file