Reduce diffs against fdisk/fdisk.8.

svn path=/head/; revision=169419

sbin/fdisk_pc98/fdisk.8

@@ -27,31 +27,34 @@ The BIOS brings in sector 0 and verifies the magic number.
 The sector
 0 boot code then searches the partition table to determine which
 partition is marked
-.Em active .
+.Dq active .
 This boot code then brings in the bootstrap from the
-.Em active
-partition and, if marked bootable, runs it.
-Under DOS,
-you can have one or more partitions with one
-.Em active .
-The DOS
+active partition and, if marked bootable, runs it.
+Under
+.Tn DOS ,
+you can have one or more partitions with one active.
+The
+.Tn DOS
 .Nm
 utility can be used to divide space on the disk into partitions and set one
-.Em active .
+active.
 .Sh DESCRIPTION
 The
 .Fx
-.Nm
-utility serves a similar purpose to the DOS program.
+utility,
+.Nm ,
+serves a similar purpose to the
+.Tn DOS
+utility.
 The first form is used to
 display partition information or to interactively edit the partition
 table.
 The second is used to write a partition table using a
-.Ar configfile
+.Ar configfile ,
 and is designed to be used by other scripts/programs.
 .Pp
 Options are:
-.Bl -tag -width time
+.Bl -tag -width indent
 .It Fl a
 Change the active partition only.
 Ignored if
@@ -59,17 +62,9 @@ Ignored if
 is given.
 .It Fl B
 Reinitialize the boot code contained in sector 0 of the disk.
-Ignored
-if
+Ignored if
 .Fl f
 is given.
-.It Fl I
-Initialize the partition table.
-One
-.Fx
-slice covering the entire disk will be created.
-Some space at the start of the disk will reserved for the IPL program
-and the pc98 partition table itself.
 .It Fl f Ar configfile
 Set partition values using the file
 .Ar configfile .
@@ -78,14 +73,16 @@ The
 always modifies existing partitions, unless
 .Fl i
 is also given, in which case all existing partitions are deleted (marked
-as "unused") before the
+as
+.Dq unused )
+before the
 .Ar configfile
 is read.
 The
 .Ar configfile
-can be "-", in which case
-.Ar stdin
-is read.
+can be
+.Sq Fl ,
+in which case standard input is read.
 See
 .Sx CONFIGURATION FILE ,
 below, for file syntax.
@@ -93,7 +90,7 @@ below, for file syntax.
 .Em WARNING :
 when
 .Fl f
-is used, you are not asked if you really want to write the partition
+is used, you are not asked if you really want to write the partitions
 table (as you are in the interactive mode).
 Use with caution!
 .It Fl i
@@ -103,6 +100,13 @@ This implies
 unless
 .Fl f
 is given.
+.It Fl I
+Initialize the partition table
+for one
+.Fx
+slice covering the entire disk.
+Some space at the start of the disk will reserved for the IPL program
+and the pc98 partition table itself.
 .It Fl s
 Print summary information and exit.
 .It Fl t
@@ -113,7 +117,7 @@ option to see what would be written to the partition table.
 Implies
 .Fl v .
 .It Fl u
-Is used for updating (editing) sector 0 of the disk.
+Update (edit) the disk's partition table.
 Ignored if
 .Fl f
 is given.
@@ -126,30 +130,26 @@ is used,
 .Nm
 prints out the partition table that is written to the disk.
 .It Fl 12345678
-Operate on a single fdisk entry only.
+Operate on a single partition table entry only.
 Ignored if
 .Fl f
 is given.
 .El
 .Pp
 The final disk name can be provided as a
-.Sq bare
+.Dq bare
 disk name only, e.g.\&
-.Ql da0 ,
-or as a fully qualified device node under
-.Pa /dev .
-If omitted, the disks
-.Ql wd0 ,
-.Ql da0 ,
-and
-.Ql od0
-are being searched in that order, until one is
-being found responding.
+.Pa da0 ,
+or as a full pathname.
+If omitted,
+.Nm
+tries to figure out the default disk device name from the
+mounted root device.
 .Pp
-When called with no arguments, it prints the sector 0 partition table.
+When called with no arguments, it prints the partition table.
 An example follows:
 .Bd -literal
-	******* Working on device /dev/rda0 *******
+	******* Working on device /dev/da0 *******
 	parameters extracted from in-core disklabel are:
 	cylinders=33075 heads=8 sectors/track=32 (256 blks/cyl)
 
@@ -203,153 +203,143 @@ An example follows:
 .Pp
 The disk is divided into three partitions that happen to fill the disk.
 The second partition overlaps the end of the first.
-(Used for debugging purposes)
-.Bl -tag -width "cyl, sector and head"
-.It Em "sysmid"
+(Used for debugging purposes.)
+.Bl -tag -width ".Em cyl , sector No and Em head"
+.It Em sysmid
 is used to label the partition.
 .Fx
 reserves the
 magic number 148 decimal (94 in hex).
-.It Em start No and Em size
+.It Xo
+.Em start
+and
+.Em size
+.Xc
 fields provide the start address
 and size of a partition in sectors.
-.\" !PC98 .It Em "flag 80"
-.\" specifies that this is the active partition.
-.It Em cyl , sector No and Em head
-fields are used to specify the beginning address
-and end address for the partition.
+.It Xo
+.Em cyl , sector
+and
+.Em head
+.Xc
+fields are used to specify the beginning and end addresses of the partition.
 .It Em "system Name"
 is the name of the partition.
-.It Em Note :
-these numbers are calculated using BIOS's understanding of the disk geometry
-and saved in the bootblock.
 .El
 .Pp
-The flags
-.Fl i
-or
-.Fl u
-are used to indicate that the partition data is to be updated, unless the
-.Fl f
-option is used.
-If the
-.Fl f
-option is not used, the
-.Nm
-utility will enter a conversational mode.
-This mode is designed not to change any data unless you explicitly tell it to.
-The
-.Nm
-utility selects defaults for its questions to guarantee the above behavior.
+.Em Note :
+these numbers are calculated using BIOS's understanding of the disk geometry
+and saved in the bootblock.
 .Pp
-It displays each partition
-and ask if you want to edit it.
-If you say yes,
-it will step through each field showing the old value
-and asking for a new one.
-When you are done with a partition,
+The
+.Fl i
+and
+.Fl u
+flags are used to indicate that the partition data is to be updated.
+Unless the
+.Fl f
+option is also given,
 .Nm
-will display it and ask if it is correct.
+will enter a conversational mode.
+In this mode, no changes will be written to disk unless you explicitly tell
+.Nm
+to.
+.Pp
 The
 .Nm
-utility will then proceed to the next entry.
+utility will display each partition and ask whether you want to edit it.
+If you say yes,
+.Nm
+will step through each field, show you the old value,
+and ask you for a new one.
+When you are done with the partition,
+.Nm
+will display it and ask you whether it is correct.
+It will then proceed to the next entry.
 .Pp
 Getting the
 .Em cyl , sector ,
 and
 .Em head
-fields correct is tricky.
-So by default,
+fields correct is tricky, so by default,
 they will be calculated for you;
-you can specify them if you choose.
+you can specify them if you choose to though.
 .Pp
 After all the partitions are processed,
 you are given the option to change the
-.Em active
+.Dq active
 partition.
-Finally,
-when the all the data for the first sector has been accumulated,
-you are asked if you really want to rewrite sector 0.
-Only if you answer yes,
-will the data be written to disk.
+Finally, when all the new data for sector 0 has been accumulated,
+you are asked to confirm whether you really want to rewrite it.
 .Pp
 The difference between the
 .Fl u
-flag and
+and
 .Fl i
-flag is that
+flags is that
 the
 .Fl u
-flag just edits the fields as they appear on the disk.
-While the
+flag edits (updates) the existing partition parameters
+while the
 .Fl i
-flag is used to "initialize" sector 0;
+flag is used to
+.Dq initialize
+them (old values will be ignored);
 it will setup the last BIOS partition to use the whole disk for
 .Fx ;
 and make it active.
 .Sh NOTES
 The automatic calculation of starting cylinder etc.\& uses
-a set of figures that represent what the BIOS thinks is the
-geometry of the drive.
-These figures are by default taken from the incore disklabel,
-but the program initially gives you an opportunity to change them.
-This allows the user to create a bootblock that can work with drives
+a set of figures that represent what the BIOS thinks the
+geometry of the drive is.
+These figures are taken from the in-core disklabel by default,
+but
+.Nm
+initially gives you an opportunity to change them.
+This allows you to create a bootblock that can work with drives
 that use geometry translation under the BIOS.
 .Pp
 If you hand craft your disk layout,
 please make sure that the
 .Fx
 partition starts on a cylinder boundary.
-A number of decisions made later may assume this.
-(This might not be necessary later.)
 .Pp
-Editing an existing partition will most likely cause you to
-lose all the data in that partition.
+Editing an existing partition will most likely result in the loss of
+all data in that partition.
 .Pp
-You should run this program interactively once or twice to see how it
-works.
+You should run
+.Nm
+interactively once or twice to see how it works.
 This is completely safe as long as you answer the last question
 in the negative.
-There are subtleties that the program detects that are
-not fully explained in this manual page.
+There are subtleties that
+.Nm
+detects that are not fully explained in this manual page.
 .Sh CONFIGURATION FILE
 When the
 .Fl f
 option is given, a disk's partition table can be written using values
 from a
 .Ar configfile .
-The syntax of this file is very simple.
-Each line is either a comment or
-a specification, and whitespace (except for newlines) are ignored:
-.Bl -tag -width Ds
-.It Xo
+The syntax of this file is very simple;
+each line is either a comment or a specification, as follows:
+.Bl -tag -width indent
+.It Ic # Ar comment ...
+Lines beginning with a
 .Ic #
-.Ar comment ...
-.Xc
-Lines beginning with a "#" are comments and are ignored.
-.It Xo
-.Ic g
-.Ar spec1
-.Ar spec2
-.Ar spec3
-.Xc
-Set the BIOS geometry used in partition calculations.
+are comments and are ignored.
+.It Ic g Ar spec1 spec2 spec3
+Set the BIOS geometry used in slice calculations.
 There must be
 three values specified, with a letter preceding each number:
-.Bl -tag -width Ds
-.Sm off
-.It Cm c Ar num
-.Sm on
+.Bl -tag -width indent
+.It Cm c Ns Ar num
 Set the number of cylinders to
 .Ar num .
-.Sm off
-.It Cm h Ar num
-.Sm on
+.It Cm h Ns Ar num
 Set the number of heads to
 .Ar num .
-.Sm off
-.It Cm s Ar num
-.Sm on
+.It Cm s Ns Ar num
 Set the number of sectors/track to
 .Ar num .
 .El
@@ -368,10 +358,12 @@ It is an error if the following is not true:
 .Ed
 .Pp
 The number of cylinders should be less than or equal to 1024, but this
-is not enforced, although a warning will be output.
+is not enforced, although a warning will be printed.
 Note that bootable
 .Fx
-partitions (the "/" file system) must lie completely within the
+partitions (the
+.Dq Pa /
+file system) must lie completely within the
 first 1024 cylinders; if this is not true, booting may fail.
 Non-bootable partitions do not have this restriction.
 .Pp
@@ -382,16 +374,10 @@ g       c1019   h39     s63
 g       h39     c1019   s63
 g       s63     h39     c1019
 .Ed
-.It Xo
-.Ic p
-.Ar partition
-.Ar type
-.Ar start
-.Ar length
-.Xc
+.It Ic p Ar partition type start length
 Set the partition given by
 .Ar partition
-(1-4) to type
+(1-8) to type
 .Ar type ,
 starting at sector
 .Ar start
@@ -400,14 +386,20 @@ for
 sectors.
 .Pp
 Only those partitions explicitly mentioned by these lines are modified;
-any partition not referenced by a "p" line will not be modified.
+any partition not referenced by a
+.Ic p
+line will not be modified.
 However, if an invalid partition table is present, or the
 .Fl i
 option is specified, all existing partition entries will be cleared
-(marked as unused), and these "p" lines will have to be used to
+(marked as unused), and these
+.Ic p
+lines will have to be used to
 explicitly set partition information.
 If multiple partitions need to be
-set, multiple "p" lines must be specified; one for each partition.
+set, multiple
+.Ic p
+lines must be specified; one for each partition.
 .Pp
 These partition lines must occur after any geometry specification lines,
 if one is present.
@@ -419,7 +411,9 @@ is 165 for
 partitions.
 Specifying a partition type of zero is
 the same as clearing the partition and marking it as unused; however,
-dummy values (such as "0") must still be specified for
+dummy values (such as
+.Dq 0 )
+must still be specified for
 .Ar start
 and
 .Ar length .
@@ -429,22 +423,17 @@ necessary, and the end offset will be rounded downwards to a cylinder
 boundary if necessary.
 .Pp
 Example: to clear partition 4 and mark it as unused:
-.Bd -literal -offset indent
-p       4       0       0       0
-.Ed
+.Pp
+.Dl "p       4       0       0       0"
 .Pp
 Example: to set partition 1 to a
 .Fx
 partition, starting at sector 1
 for 2503871 sectors (note: these numbers will be rounded upwards and
 downwards to correspond to head and cylinder boundaries):
-.Bd -literal -offset indent
-p       1       165     1       2503871
-.Ed
-.It Xo
-.Ic a
-.Ar partition
-.Xc
+.Pp
+.Dl "p       1       165     1       2503871"
+.It Ic a Ar partition
 Make
 .Ar partition
 the active partition.
@@ -452,9 +441,8 @@ Can occur anywhere in the config file, but only
 one must be present.
 .Pp
 Example: to make partition 1 the active partition:
-.Bd -literal -offset indent
-a       1
-.Ed
+.Pp
+.Dl "a       1"
 .El
 .Sh SEE ALSO
 .Xr boot98cfg 8 ,
@@ -462,15 +450,11 @@ a       1
 .Xr newfs 8
 .Sh BUGS
 The default boot code will not necessarily handle all partition types
-correctly, in particular those introduced since MS-DOS 6.x.
+correctly, in particular those introduced since
+.Tn MS-DOS
+6.x.
 .Pp
-The entire program should be made more user-friendly.
-.Pp
-Throughout this man page, the term
-.Sq partition
-is used where it should actually be
-.Sq slice ,
-in order to conform with the terms used elsewhere.
+The entire utility should be made more user-friendly.
 .Pp
 You cannot use this command to completely dedicate a disk to
 .Fx .