[sgroup] S50 sample to S550 convertion

Hi everyone, I really need help on this one. I tried once before a long time ago, got some suggestions, but could´t get it to work. Today I have used many, many hours to solve this problem, but still no luck. I have a S-550 sampler with a monochrome monitor and no mouse. Still works very well. I have downloaded various versions of the OS, including the lastest(?) OS version; CD-5 v 1.02 I have downloaded the DART and SMAC programs, so that I can store and read disk files on my old Macintosh. It all works quite well, actually. I can now store and archive lots of floppy disk images. And I can make new floppies to use on the S-550. Really great. But; I have some old S-50 disks that I want to read. I do know that S-550 can read S-50 disks, because in the 1980s I witnessed this. There is an utility called S550-S50 conversion, but that one is designed to convert FROM S-550 to S-50, not the other way round, as I need it to do. Now; conversion from S-50 to the bigger S-550 should be easy; all you need to do is insert the floppy, choose the right menu, and that should be it. But no: I have tried to read it in using all the floppy manu options, and I have also tried the "convertion" menu option under the Utilities menu. Each time I get one of two responses: a. Nothing; the S-550 just drops back to the meny after a second or two, or most usually; b. It starts reading the disk, display (correctly) "S-50 version 2", and answers with "please insert S-550 disk" I of course try to insert the S-550 system disk, but nothing happens. I have tried all kinds of tricks to make it read the S-50 disk, but so far, no luck at all. I have tried with lower OS versions, and I found a special "utility disk" that was supposed to do this, and I have downloaded lots and lots of text files and read about this, and all documentation clearly state that this should be a piece of cake. However, somehow it does not work! Could please anyone who know how this works and/or have been able to convert S-50 floppy disks to S-550 let me know how this is done? All the best, Terje Winther terjewi(a)notam02.no http://www.notam02.no/~terjewi/synthesizer/