All you need is one page out of the RT-11 manuals: that for COPY/DEV/FI. As an example, if you've got a RX02 that you want an image of, and you're going to put that image on a RL02 and call it "MYRX02.DSK", you do: COPY/DEVICE/FILE DY0: DL0:MYRX02.DSK Then you use Kermit (or, if you're like me and have a half-dozen networked PDP-11's, you just use FTP) to move the image off to whatever other place you might want to put the image. To do the reverse operation, you'd (or course!) do: COPY/FILE/DEVICE DL0:MYRX02.DSK DY0: Note that doing this under RT-11, you *only* get the blocks that RT-11 usually addresses on the disk. There are the usual caveats about track zero on 8" floppies and the bad block forwarding table on RL02's; these are well-discussed in the RT-11 _Software Support Manual_ in the sections on individual drivers, and the .SPFUN ways of reading these areas are also thoroughly documented. Also note that in doing this, you'll be copying every block on the disk, even those not included in a file. Don't get burned like some others have and end up copying proprietary or personal data that you didn't want copied when you make the image! Bob Schor has a program called "CLEAR.SAV", that is available from the 11S113 RT DECUS SIG symposium tape, that will clear out blocks not allocated to a file. This, and many other useful utilities from Bob, are available from: ftp://sunsite.unc.edu/pub/academic/computer-science/history/pdp-11/rt/decus… ----- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology Voice: 301-767-5917 7328 Bradley Blvd Fax: 301-767-5927 Bethesda, MD, USA 20817