Maintenance Commands                                     mkfs(1M)


mkfs - construct a file system


mkfs [ -F FSType ] [ generic_options ] [ -o FSType- specific_options ] raw_device_file [ operands ]


The mkfs utility constructs a file system on the raw_device_file by calling the specific mkfs module indi- cated by -F FSType. Note: ufs file systems are normally created with the newfs(1M) command. generic_options are independent of file system type. FSType-specific_options is a comma-separated list of keyword=value pairs (with no intervening spaces), which are FSType-specific. raw_device_file specifies the disk parti- tion on which to write the file system. It is required and must be the first argument following the specific_options (if any). operands are FSType-specific. See the FSType- specific manual page of mkfs (for example, mkfs_ufs (1M)) for a detailed description.


The following are the generic options for mkfs: -F Specify the FSType to be constructed. If -F is not specified, the FSType is determined from /etc/vfstab" by matching the raw_device_file with a vfstab entry, or by consulting the /etc/default/fs file. -V Echo the complete command line, but do not execute the command. The command line is generated by using the options and arguments provided and adding to them information derived from /etc/vfstab or /etc/default/fs. This option may be used to verify and validate the command line. -m Return the command line which was used to create the file system. The file system must already exist. This option provides a means of determining the command used in constructing the file system. -o Specify FSType-specific options. See the manual page for the mkfs module specific to the file system type. USAGE See largefile(5) for the description of the behavior of mkfs when encountering files greater than or equal to 2 Gbyte ( 2 **31 bytes). SunOS 5.8 Last change: 16 Sep 1996 1 Maintenance Commands mkfs(1M)


/etc/default/fs" Default file system type. Default values can be set for the following flags in /etc/default/fs. For exam- ple: LOCAL=ufs LOCAL The default partition for a command if no FSType is specified. /etc/vfstab" List of default parameters for each file system


See attributes(5) for descriptions of the following attri- butes: ____________________________________________________________ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |_____________________________|_____________________________| | Availability | SUNWcsu | |_____________________________|_____________________________|


mkfs_ufs(1M), newfs(1M), vfstab(4), attributes(5), large- file(5) Manual pages for the FSType-specific modules of mkfs.


This command may not be supported for all FSTypes. SunOS 5.8 Last change: 16 Sep 1996 2