Mac OS X in a Nutshell

Name

fdisk

Synopsis

fdisk [device { -diskSize | -isDiskPartitioned | -installSize | 
-sizeofExtended | -freeSpace | -freeWithoutUFS | 
-freeWithoutUFSorExt | -isThereExtendedPartition | 
-isThereUFSPartition | -removePartitioning | -bootPlusUFS | 
-dosPlusUFS integer | -setAvailableToUFS | -setExtendedToUFS | 
-setExtAndAvailableToUFS | -setUFSActive | -script }] 
[-bootsectorOnly] [-useAllSectors] [-useBoot0 [-boot0 
filename]] [-heads integer] [-cylinders integer] [-sectors 
integer]

Provides control over DOS partition maps on disk devices in Darwin x86 systems. Much of its functionality is devoted to managing an Apple UFS partition that Darwin uses as a boot volume. There can be only one Apple UFS partition on a disk.

When invoked without a device name argument, fdisk enters interactive mode, in which navigation is performed via a series of menus.

Options

-boot0

Specifies a nondefault file to use as the boot program for the -useBoot0 flag.

-bootPlusUFS

Repartitions the disk to include an 8-MB booter partition (which is set active) and the remainder as an Apple UFS partition.

-bootsectorOnly

Limits modification to include only the boot sector. Normally, the first sector of each new partition is erased, but this flag disables that behavior.

-cylinders

Forces an assumption of a disk geometry with the specified number of cylinders.

-diskSize

Prints the size of the specified device, in megabytes, to standard output.

-dosPlusUFS

Repartitions the disk to include a DOS partition of the specified ...