@Gradius2 First hello. hi Gradius2 been lurking on these lists 3 or 4 weeks, and have seen your advice. very interested in your methods of directly talking to the hdd's. I've never seen this before, but suppose it's all logical when u think about it (communication wise). can you provide link to the RS232/TTL convertors you suggested... or is it simply a MAX232 based solution for example : http://cgi.ebay.co.uk/RS232-Serial-Port-To...A1%7C240%3A1318 i do understand the principles, after been a radio ham, and using circuits similar over the years. again, many thanks for all your info in this field. craig STM31000340AS * 2 MX15 ST31000340AS * 2 SD15