Max, Please clip off the unwanted parts of the message. <><The CP/M 3+ manual says the syntax is drive:12345678.123;password. <><Maybe it's a weird DR thing. They tended to add weird stuff... < <So, how DID it work? OK to fair. ;) It was file level password protection and required the whole colume to be enabled for it. Security level was low though. If the user could assemble and run a program they could write code to access the disk directory and toggle the right bits and they had control. It was aimed at captive applications where the user had limited resources and could not get directly at the file system. Many of the things in CPM3 are there to provice more direct compatability with MP/M. As to weird, no most of the additions they did were similar to the ZCPR groups and other were doing in parallel and had sound basis. Allison