The commands are mutually exclusive.
-[*-N* _partition-number_] __device__::
+[*-N*, *--partno* _partition-number_] __device__::
The default *sfdisk* command is to read the specification for the desired partitioning of _device_ from standard input, and then create a partition table according to the specification. See below for the description of the input format. If standard input is a terminal, then *sfdisk* starts an interactive session.
+
-If the option *-N* is specified, then the changes are applied to the partition addressed by _partition-number_. The unspecified fields of the partition are not modified.
+If the option *-N* or *--partno* is specified, then the changes are applied to the partition addressed by _partition-number_. The unspecified fields of the partition are not modified.
+
Note that it's possible to address an unused partition with *-N*. For example, an MBR always contains 4 partitions, but the number of used partitions may be smaller. In this case *sfdisk* follows the default values from the partition table and does not use built-in defaults for the unused partition given with *-N*. See also *--append*.
*-b*, *--backup*::
Back up the current partition table sectors before starting the partitioning. The default backup file name is _~/sfdisk-<device>-<offset>.bak_; to use another name see option *-O*, *--backup-file*. See section *BACKING UP THE PARTITION TABLE* for more details.
+*--bytes*::
+Print SIZE in bytes rather than in human readable format.
+
*--color*[**=**__when__]::
Colorize the output. The optional argument _when_ can be *auto*, *never* or *always*. If the _when_ argument is omitted, it defaults to *auto*. The colors can be disabled; for the current built-in default see the *--help* output. See also the *COLORS* section.