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MKFS.MFS(1) FreeBSD General Commands Manual MKFS.MFS(1) NAME mkfs.mfs - make a file system SYNOPSIS mkfs.mfs [-ldtv] [-B blocksize] [-i inodes] [-b blocks] [-z zone_shift] [-x extra_space] [-I fs_offset] [-T timestamp] special [prototype] OPTIONS The following options are available: -l Make a listing on standard output -d Use mod time of mkfs.mfs binary for all files -t Do not test if file system fits on the medium -v Be verbose on standard error stream; more -v options add to verbosity -i inodes Number of i-nodes (files) -B blocksize Filesystem block size (in bytes) -b blocks Filesystem size (in blocks) -I fs_offset Write filesystem starting at offset (in bytes) -T timestamp Use timestamp for inode times -x extra_space Extra space after dynamic sizing (blocks and inodes) -z zone_shift Logarithm of the size of a zone with respect to a zone. With the default value of 0 zones are of the same size as blocks; with 1, each zone is made of two blocks; etc. EXAMPLES 1. Make a file system on /dev/ram1 mkfs.mfs /dev/ram1 proto 2. Make empty 300,000-block file system mkfs.mfs -b 300000 /dev/c0d0p0s0 3. Alternate way to specify the size mkfs.mfs /dev/c0d0p0s0 300000 DESCRIPTION The mkfs.mfs builds a file system and copies specified files to it. The prototype file tells which directories and files to copy to it. If the prototype file cannot be opened, and its name is just a string of digits, an empty file system will be made with the specified number of blocks. A sample prototype file follows. The text following the # sign in the example below is comment. In real prototype files, comments are not allowed. boot # boot block file (ignored) 360 63 # blocks and i-nodes d--755 1 1 # root directory bin d--755 2 1 # bin dir: mode (755), uid (2), gid (1) sh ---755 2 1 /user/bin/shell # shell has mode rwxr-xr-x mv -u-755 2 1 /user/bin/mv # u = SETUID bit login -ug755 2 1 /user/bin/login # SETUID and SETGID $ # end of /bin dev d--755 2 1 # special files: tty (char), fd0 (block) tty c--777 2 1 4 0 # uid=2, gid=1, major=4, minor=0 fd0 b--644 2 1 2 0 360 # uid, gid, major, minor, blocks $ # end of /dev user d--755 12 1 # user dir: mode (755), uid (12), gid (1) ast d--755 12 1 # /user/ast $ # /user/ast is empty $ # end of /user $ # end of root directory The first entry on each line (except the first 3 and the $ lines, which terminate directories) is the name the file or directory will get on the new file system. Next comes its mode, with the first character being -dbcs for regular files, directories, block special files, character special files, and symlinks, respectively. The next two characters are used to specify the SETUID and SETGID bits, as shown above. The last three characters of the mode are the rwx protection bits, in octal notation. Following the mode are the uid and gid. For special files, the major and minor devices are needed. SEE ALSO mkproto(1), fsck.mfs(1), mount(1). AUTHORS The mkfs.mfs utility was written by Andy Tanenbaum, Paul Ogilvie, Frans Meulenbroeks, Bruce Evans MINIX 3 April 28, 2013 MINIX 3