I was trying to move the read-only part of LISTSERV to a DASD shared by our two mainframes, EB0UB011 & EB0UB012. I moved all EXECs (except LSV$PROF), XEDIT, MEMOs and REFCARDs, and left LISTs, STATs and FILEs in private minidisks. All I have tried works well, except for the 'Info' command, which expects LISTxxxx MEMO and LISTxxxx REFCARD to be in the A disk -- perhaps this could be changed in a further release to search the files in the normal CMS search order. A brief list, included in the installation memo, of strictly read-only files would be useful for installations which use shared DASDs. Eric: the SP4 CARD module you sent can be run under SP3, or they are incompatible? J. M. Blasco