.\""Copyright (c) 2001 Apple Computer, Inc. All Rights Reserved. .\"The contents of this file constitute Original Code as defined in and are .\"subject to the Apple Public Source License Version 1.2 (the 'License'). .\"You may not use this file except in compliance with the .\"License. Please obtain a copy of the License at .\"http://www.apple.com/publicsource and read it before using this file. .\" .\"This Original Code and all software distributed under the License are .\"distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER .\"EXPRESS OR IMPLIED, AND APPLE .\"HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY .\"WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, .\"QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the .\"specific language governing rights and limitations under the License." .Dd March 24, 2001 .Dt PDISK 8 .Os Darwin .Sh NAME .Nm pdisk .Nd Apple partition table editor .Sh SYNOPSIS .Nm .Op Fl h | -help .Op Fl v | -version .Op Fl l | -list .Oo .Op name ... .Oc .Pp .Nm .Op r | -readonly .Ar device ... .Sh DESCRIPTION .Nm is a menu driven program which partitions disks using the standard Apple disk partitioning scheme described in "Inside Macintosh: Devices". It does not support the intel/dos partitioning scheme supported by .Nm fdisk . .Pp .Ar device is of the following form: .Bl -tag -compact .It /dev/disk0s .It /dev/disk0s1 .It etc. .El .Sh OPTIONS .Bl -tag -width -indent .It Fl v | -version Prints version number of the .Nm program. .It Fl h | -help Prints a rather lame set of help messages for the .Nm program. .It Fl l | -list If no .Ar names are present then lists the partition tables for .Nm /dev/disk0s , .Nm /dev/disk0s1 , .Nm /dev/disk0s2 , and so on. Otherwise, lists the partition tables for the specified .Ar names. .It Fl r | -readonly Prevents .Nm from writing to the device. .El .Sh "Editing Partition Tables" An argument which is simply the name of a device indicates that .Nm should edit the partition table of that device. .Pp .Bl -tag -width -indent -compact The current top level editing commands are: .It h command help .It p print the partition table .It P (print ordered by base address) .It i initialize partition map .It s change size of partition map .It c create new partition .It C (create with type also specified) .It d delete a partition .It r reorder partition entry in map .It w write the partition table .It q quit without saving changes .El .Pp Commands which take arguments prompt for each argument in turn. You can also type any number of the arguments separated by spaces and those prompts will be skipped. The only exception to typeahead are the confirmation prompts on the .Nm i and .Nm w commands. The idea being that if we expect you to confirm the decision we shouldn't undermine that by allowing you to be precipitate about it. .Pp Partitions are always specified by their number, which the index of the partition entry in the partition map. Most of the commands will change the index numbers of all partitions after the affected partition. You are advised to print the table as frequently as necessary. .Pp Creating more than fifteen partitions is not advised. There is currently a bug in the some (all?) of the kernels which causes access to the whole disk fail if more than fifteen partitions are in the map. .Pp The .Nm c (create new partition) command is the only one with complicated arguments. The first argument is the base address (in blocks) of the partition. Besides a raw number, you can also specify a partition number followed by the letter 'p' to indicate that the first block of the new partition should be the same as the first block of that existing free space partition. The second argument is the length of the partition in blocks. This can be a raw number or can be a partition number followed by the letter 'p' to use the size of that partition or can be a number followed by 'k', 'm', or 'g' to indicate the size in kilobytes, megabytes, or gigabytes respectively. (These are powers of 1024, of course, not powers of 1000.) The last argument is the name of the partition. This can be a single word without quotes, or a string surrounded by single or double quotes. .Pp The .Nm C command is identical to the .Nm c command, with the addition of a partition type argument after the other arguments. .Pp The .Nm r (reorder) command allows the index number of partitions to be changed. The index numbers are constrained to be a contiguous sequence. .Pp The .Nm i (initialize) command prompts for the size of the device. This was done to get around a bug in the kernel where it reports the wrong size for the device. .Pp The .Nm w (write) command does write the partition map out. .Pp .Sh BUGS .Nm should be able to create HFS partitions that work. .Pp Even more help should be available during user input.