usage: fdisk [-ieu] [-f mbrboot] [-c cyl -h head -s sect] [-S size] [-r] [-a style] disk
-i: initialize disk with new MBR
-u: update MBR code, preserve partition table
-e: edit MBRs on disk interactively
-f: specify non-standard MBR template
-chs: specify disk geometry
-S: specify disk size
-r: read partition specs from stdin (implies -i)
-a: auto-partition with the given style
-d: dump partition table
-y: don't ask any questions
-t: test if disk is partitioned
`disk' is of the form /dev/rdisk0.
auto-partition styles:
boothfs 8Mb boot plus HFS+ root partition (default)
bootufs 8Mb boot plus UFS root partition
hfs Entire disk as one HFS+ partition
ufs Entire disk as one UFS partition
dos Entire disk as one DOS partition
raid Entire disk as one 0xAC partition