>QUESTION: do you have to change it for every file in the "xxxx FILEID" (and > not only the *DEFAULT* entry) ? Any reference to the static filemode must be changed to 'Xn/cuu'. But you can do this easily with an XEDIT change command. Be sure that your PROFILE XEDIT doesn't change the file to RECFM V. NOTE: Nothing forces you to change static minidisks into dynamic ones. That is, everything that worked before will still work with the new code. IF you want to change static disks into dynamic ones, THEN you have to go to the pain of making changes to old FILEID entries. >Experience: For each FILELIST (not for the only NOTEBOOK filelists) That was a mistake. I meant 'DATABASE REFRESH listname'. The filelist REFRESH process is recommended (for consistency) but not mandatory, and then only for the affected filelists. DATABASE REFRESH is mandatory for all the affected lists, because the old DBNAMES file contains references to static mdisks. Note that there is a restriction to the REFRESH command that it will support only a limited number of different dynamic disks for a given filelist (ie it must be possible to ACCESS all these disks concurrently - this is for obvious performance reasons, it would take hours if you had to ACCESS a minidisk for each file in the filelist). If it proves to be a problem, I will find a way out (like sorting the files according to cuu, accessing the disk, gathering all info, then writing it back in the appropriate order - a pain, but it could be done if needed). This applies only at the filelist level, ie you can have 400 filelists each with files on a different minidisk, but you can't have a single filelist with files on 400 different minidisks (or then you couldn't REFRESH it). Eric