At 04:27 AM 4/1/99 GMT, Lawrence LeMay wrote: There aren't many Terak owners out here. :-) A number of relevant links are on my Jefferson Computer Museum web page at <http://www.threedee.com/jcm/terak/index.html> and don't forget to visit the UCSD P-System exhibit in the west wing on your way out. As explained on my page, I've archived a number of disk images by performing the "filer / copy / #5: / REMOTE:" operation under the P-System. This sends a logical disk image out the serial port, where I capture it using the venerable Pro-YAM telecom package. (Now there's a guy who belongs on this list <http://www.omen.com/>.) I wrote portable utilities (also available on my web page) that will perform directory listings of UCSD and RT-11 disk images made in this way. They'll also "burst" the files I was part of the Teledisk purchase, and hope to connect a spare eight-inch drive to a spare PC one of these days, and find a reliable way to write these disk image files back to Terak floppies. Another annoyance I'd like to fix and side-step is the issue of bad sectors. The above raw-copy procedure works fine as long as there is no disk error. If a sector is bad, the version of the P-System I'd been using would become unstable, requiring a reboot. (I never got around to testing newer versions of the OS to see if this glitch had been fixed.) Either way, what this calls for is an improved disk-reading program that gracefully detects and recovers from bad sectors. Also, I think it argues for an alternative disk archive format that stored meta-information to indicate the known-bad sectors. I think Teledisk or Anadisk or some such utility has a documented format for this, and I think I even started to write a utility to swap between pure binary images and that format. As for software, I've been meaning to get a copy of the AT&T Mini-Unix from Mark Riordan (see link on my page). I've got several versions of the UCSD P-System and RT-11, as well as factory diagnostic diskettes. - John