Hi, when I mount a device (or medium) which is read-only without the -r option, I get lots of troubles when shutting down later. Syncer does not write all vnodes/blocks to disk. This happened to me with a write protected floppy disk (-t msdos) and a CD-R (-t ufs). It seems to me that read-only state of a file system is being initially setup according to the type of the file system. Wouldn't it be more appropriate to detect the medium/device capabilities to setup it read-only automatically if needed? Martin