<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//DE"><HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><TITLE></TITLE></HEAD><BODY><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;"><p style="margin:0px;padding:0px;"><span style="font-size: 12pt;">I'm very curious about what results the MOUNT/FOR & COPY method (under VMS) will show with RX01/RX02
floppies.
I would try myself, but my RX drive is out of order.
I am confident in the virtues of VMS!
Alan, let us know about your imaging progress.
dd if=/dev/rx0 of=filename.img should work e.g. from ULTRIX-32 as well.
By the way: when was "dd" invented?
Ulli
<span style="color: green;">> -----Ursprüngliche Nachricht-----</span>
<span style="color: green;">> Von: Leo Broukhis </span>
<span style="color: green;">> Gesendet: Fr. 17.07.2015 20:48</span>
<span style="color: green;">> An: simh@trailing-edge.com , </span>
<span style="color: green;">> Betreff: Re: [Simh] Simh Digest, Vol 138, Issue 37</span>
<span style="color: green;">></span>
<span style="color: green;">> On Fri, 17 Jul 2015 11:18:34 +0200, Hans-Ulrich Hölscher</span>
<span style="color: green;">> wrote:</span>
<span style="color: green;">>></span>
<span style="color: green;">>>>> That sounds like the really</span>
<span style="color: green;">> easy way to do it. Does it copy>> track 0 of RX01/02</span>
<span style="color: green;">> floppies?> > I had some experience with RX01/02 floppies when</span>
<span style="color: green;">> reviving LSX using> logical copies of</span>
<span style="color: green;">> the disks. Track 0 will be logically at the very > end. The</span>
<span style="color: green;">> problem is with media size 256256: if the</span>
<span style="color: green;">> logical block size> is 512, two physical 128-byte sectors (the</span>
<span style="color: green;">> boot sectors) will be> lost, and the</span>
<span style="color: green;">> logical copy will be 256000 bytes long.> > Leo</span>
<span style="color: green;">>></span>
<span style="color: green;">>> I must admit I used my VMS MOUNT/FOR</span>
<span style="color: green;">> & COPY method only with RX50 floppies and RD and RZ disks.</span>
<span style="color: green;">>> Leo, what method did you use?</span>
<span style="color: green;">>> I was quite sure my method catches ALL</span>
<span style="color: green;">> sectors ...</span>
<span style="color: green;">></span>
<span style="color: green;">> On some Unix V6, "od /dev/rx0" or similar was used, and the serial</span>
<span style="color: green;">> console output was intercepted.</span>
<span style="color: green;">> Disk devices are block devices (raw access to block devices not yet</span>
<span style="color: green;">> invented, so no "/dev/rrx0" :( ), and the block size is 512, thus</span>
<span style="color: green;">> only</span>
<span style="color: green;">> 256000 bytes were returned.</span>
<span style="color: green;">></span>
<span style="color: green;">> Leo</span></span></pre></div><br><br>---<br><div style="font-family:arial;font-size:10pt;">Alle Postfächer an einem Ort. Jetzt wechseln und E-Mail-Adresse mitnehmen! <a style="font-family:arial;font-size:10pt;" href="http://email.freenet.de/basic/Informationen" target="_blank">Rundum glücklich mit freenetMail</a></div>
</BODY></HTML>