1mkfs(1M)                System Administration Commands                mkfs(1M)
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NAME

6       mkfs - construct a file system
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SYNOPSIS

9       mkfs [-F FSType] [generic_options]
10            [-o FSType-specific_options] raw_device_file
11            [operands]
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DESCRIPTION

15       The  mkfs  utility  constructs  a file system on the raw_device_file by
16       calling the specific mkfs module indicated by  -F FSType.
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19       Note: ufs file systems are normally created with the newfs(1M) command.
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22       generic_options  are  independent  of  file  system  type.  FSType-spe‐
23       cific_options  is a comma-separated  list of  keyword=value pairs (with
24       no intervening  spaces),  which  are  FSType-specific.  raw_device_file
25       specifies  the  disk partition on which to write the file system. It is
26       required  and   must  be  the  first  argument  following   the    spe‐
27       cific_options  (if any). operands are  FSType-specific. See the FSType-
28       specific manual page of  mkfs  (for  example,   mkfs_ufs  (1M))  for  a
29       detailed description.
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OPTIONS

32       The following are the generic options for mkfs:
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34       -F    Specify  the   FSType to be constructed. If  -F is not specified,
35             the  FSType is  determined  from   /etc/vfstab  by  matching  the
36             raw_device_file  with  a   vfstab  entry,  or  by  consulting the
37             /etc/default/fs file.
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40       -V    Echo the complete command line, but do not execute  the  command.
41             The  command line is generated by using the options and arguments
42             provided and adding to them information derived from  /etc/vfstab
43             or   /etc/default/fs. This option may be used to verify and vali‐
44             date the command line.
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47       -m    Return the command line which was used to create the file system.
48             The  file system must already exist. This option provides a means
49             of determining the command used in constructing the file system.
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52       -o    Specify  FSType-specific options. See the  manual  page  for  the
53             mkfs module specific to the file system type.
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USAGE

57       See  largefile(5)  for  the  description  of  the behavior of mkfs when
58       encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
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FILES

61       /etc/default/fs    Default file system type. Default values can be  set
62                          for  the  following  flags  in  /etc/default/fs. For
63                          example: LOCAL=ufs
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65                          LOCAL    The default partition for a command  if  no
66                                   FSType is specified.
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70       /etc/vfstab        List of default parameters for each file system
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ATTRIBUTES

74       See attributes(5) for descriptions of the following attributes:
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79       ┌─────────────────────────────┬─────────────────────────────┐
80       │      ATTRIBUTE TYPE         │      ATTRIBUTE VALUE        │
81       ├─────────────────────────────┼─────────────────────────────┤
82       │Availability                 │SUNWcsu                      │
83       └─────────────────────────────┴─────────────────────────────┘
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SEE ALSO

86       mkfs_ufs(1M), newfs(1M), vfstab(4), attributes(5), largefile(5)
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89       Manual pages for the  FSType-specific modules of  mkfs.
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NOTES

92       This command might not be supported for all FSTypes.
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95       You  can use lofiadm to create a file that appears to a mkfs command as
96       a raw device. You can then use a mkfs command to create a  file  system
97       on that device. See lofiadm(1M) for examples of creating a UFS and a PC
98       (FAT) file system (using mkfs_ufs(1M) and mkfs_pcfs(1M))  on  a  device
99       created by lofiadm.
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103SunOS 5.11                        17 Nov 2000                         mkfs(1M)
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