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| # $NetBSD: Makefile,v 1.1.1.1 2000/08/07 09:23:41 leo Exp $ | ||
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| PROG= ahdilabel | ||
| SRCS= ahdilabel.c build.c check.c cksum.c magic.c openraw.c read.c write.c \ | ||
| writedtab.c | ||
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| MAN= ahdilabel.8 | ||
| MANSUBDIR= /atari | ||
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| WARNS= 1 | ||
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| CFLAGS += -g | ||
| .include <bsd.prog.mk> |
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| .\" $NetBSD: ahdilabel.8,v 1.1.1.1 2000/08/07 09:23:41 leo Exp $ | ||
| .\" | ||
| .\" | ||
| .\" Copyright (c) 1999 The NetBSD Foundation, Inc. | ||
| .\" All rights reserved. | ||
| .\" | ||
| .\" This code is derived from software contributed to The NetBSD Foundation | ||
| .\" by Julian Coleman and Leo Weppelman. | ||
| .\" | ||
| .\" Redistribution and use in source and binary forms, with or without | ||
| .\" modification, are permitted provided that the following conditions | ||
| .\" are met: | ||
| .\" 1. Redistributions of source code must retain the above copyright | ||
| .\" notice, this list of conditions and the following disclaimer. | ||
| .\" 2. Redistributions in binary form must reproduce the above copyright | ||
| .\" notice, this list of conditions and the following disclaimer in the | ||
| .\" documentation and/or other materials provided with the distribution. | ||
| .\" 3. All advertising materials mentioning features or use of this software | ||
| .\" must display the following acknowledgement: | ||
| .\" This product includes software developed by the NetBSD | ||
| .\" Foundation, Inc. and its contributors. | ||
| .\" 4. Neither the name of The NetBSD Foundation nor the names of its | ||
| .\" contributors may be used to endorse or promote products derived | ||
| .\" from this software without specific prior written permission. | ||
| .\" | ||
| .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | ||
| .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | ||
| .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
| .\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | ||
| .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| .\" POSSIBILITY OF SUCH DAMAGE. | ||
|
|
||
| .Dd July 29, 2000 | ||
| .Dt AHDILABEL 8 | ||
| .Os | ||
| .Sh NAME | ||
| .Nm ahdilabel | ||
| .Nd modify AHDI partitions | ||
| .Sh SYNOPSIS | ||
| .Nm ahdilabel | ||
| .Ar disk | ||
| .Sh DESCRIPTION | ||
| .Nm ahdilabel | ||
| allows you to modify the AHDI partition table on a disk partitioned with | ||
| AHDI or an AHDI compatible formatter. The AHDI partition format is usually | ||
| only present on disks shared between | ||
| .Nx | ||
| and some other OS. The partition identifiers are used by | ||
| .Nx | ||
| as a guideline to emulate a disklabel on such a disk. | ||
| .Pp | ||
| .Nm ahdilabel | ||
| supports the following options: | ||
| .Pp | ||
| .Bl -tag -width disk | ||
| .It Ar disk | ||
| The name of the disk you want to edit. | ||
| .Nm ahdilabel | ||
| will first try to open a disk of this name. If this cannot | ||
| be opened, it will attempt to open | ||
| .Ar r Ns <disk> Ns Ar c . | ||
| Finally, if this also cannot be opened, it will attempt to open | ||
| .Ar /dev/r Ns <disk> Ns Ar c . | ||
| .El | ||
| .Pp | ||
| .Nm ahdilabel | ||
| will display information about the number of sectors, tracks | ||
| and sectors on the disk, as well as the current AHDI partition information. | ||
| It will then prompt for input. The input choices are: | ||
| .Pp | ||
| .Bl -tag -width a-p | ||
| .It Ar a-p | ||
| Modify a partition. You will be prompted for a partition id, root, start | ||
| and size. | ||
| .Nx | ||
| recognises the following partition id's: | ||
| .Pp | ||
| .Bl -tag -width "GEM or BGM" -compact | ||
| .It NBD | ||
| Partition is reserved for | ||
| .Nx . | ||
| This can be either a root or an user partition. The first NBD | ||
| partition on a disk will be mapped to | ||
| .Nx partition | ||
| letter | ||
| .Em a . | ||
| The following NBD partitions will be mapped from letter | ||
| .Em d | ||
| up. | ||
| The filesystem type is ffs by default. | ||
| .It SWP | ||
| The first SWP partition is mapped to partition | ||
| .Em b. | ||
| .It GEM or BGM | ||
| These partitions are mapped from | ||
| .Em d | ||
| up. The filesystem type is msdos. | ||
| .El | ||
| .Pp | ||
| The root, start and size parameters can be entered using sector or | ||
| cylinder/track/sector notation. Whole numbers of cylinders can be entered | ||
| using the shorthand <cylinder>/. Likewise, whole numbers of tracks can be | ||
| entered using the shorthand <cylinder>/<track>/. | ||
| .Pp | ||
| The sector holding the primary AHDI partition table only has space for four | ||
| partitions. Thus, if a disk has more than four partitions, the extra | ||
| partition information is held in auxilliary root sectors. There is one | ||
| auxilliary root for each additional partition (and also for the fourth | ||
| partition, if the disk has more than four partitions). | ||
| .It Ar r | ||
| Recalculate the root sectors. This will automatically assign auxilliary | ||
| root sectors if the disk has more than 4 partitions. The auxilliary root | ||
| sectors will be positioned in a default location preceeding the relevant | ||
| partition. | ||
| .It Ar s | ||
| Show the current partition information. | ||
| .It Ar u | ||
| Toggle the unit display between sector and cylinder/track/sector notation. | ||
| .It Ar w | ||
| Write the AHDI partition table to the disk. | ||
| .It Ar q | ||
| Quit | ||
| .El | ||
| .Sh EXAMPLES | ||
| .Dl ahdilabel sd0 | ||
| Edit the AHDI label for disk sd0. | ||
| .Sh CAVEATS | ||
| The changes made to the AHDI partitions will become active on the next | ||
| .Em first open | ||
| of the disk. You are advised to use | ||
| .Nm ahdilabel | ||
| only on a disk without any mounted or otherwise active partitions. This | ||
| is not enforced by | ||
| .Nm ahdilabel. | ||
| .Pp | ||
| Because of way | ||
| .Nx | ||
| interprets AHDI partition tables to create the | ||
| .Nx | ||
| disklabel, the | ||
| .Nx | ||
| partition ordering may change if partitions labelled NBD are created or | ||
| removed. | ||
| .Pp | ||
| Creating an AHDI partition table on a disk that previously did not have | ||
| one will almost certainly overwrite any existing partition information | ||
| and/or data on that disk. This is especially the case if auxilliary root | ||
| sectors are needed for the AHDI partition table. | ||
| .Pp | ||
| As soon as a disk contains at least one NBD partition, you are allowed to | ||
| write | ||
| .Nx | ||
| disklabels and install bootstraps. | ||
| .Sh SEE ALSO | ||
| .Xr bootpref 8 , | ||
| .Xr disklabel 8 , | ||
| .Xr installboot 8 | ||
| .Sh HISTORY | ||
| The | ||
| .Nm ahdilabel | ||
| command first appeared in | ||
| .Nx 1.5 . |
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