On May 28, 2014, at 2:19 PM, Cory Smelosky <b4 at gewt.net> wrote: On Wed, 28 May 2014, Johnny Billquist wrote: I would guess on a bad XXDP image, since XXDP requires almost nothing working. If RSRS/E and RSX works then I can't imagine XXDP not working. As soon as I figure out how the hell to write a disk image from RSTS/E I'll try a new image. ;) Can't MOUNT FOREIGN so I need to read more manuals it appears. On RSTS, to access a disk without using the RSTS file system ( non file structured mode ) you don t mount it, you just refer to the device name. For example, in BASIC you d use the device name in an OPEN statement, without a file name part: open db0: as file 1% You need privs for this logged in as 1,x under V8 or older, WRTNFS privs on V9 or later (which typically are set on 1,x accounts). paul