svn commit: r210408 - head/sbin/geom/class/part
Andrey V. Elsukov
ae at FreeBSD.org
Fri Jul 23 11:00:44 UTC 2010
Author: ae
Date: Fri Jul 23 11:00:43 2010
New Revision: 210408
URL: http://svn.freebsd.org/changeset/base/210408
Log:
Document that SI unit suffixes are supported for -b and -s options
of add verb. Mention about maximum size limit for "freebsd-boot"
partition. It should be smaller than 545 KB (hardcoded in pmbr).
Show usage of SI unit suffixes in example.
Approved by: mav (mentor)
MFC after: 1 week
Modified:
head/sbin/geom/class/part/gpart.8
Modified: head/sbin/geom/class/part/gpart.8
==============================================================================
--- head/sbin/geom/class/part/gpart.8 Fri Jul 23 09:11:47 2010 (r210407)
+++ head/sbin/geom/class/part/gpart.8 Fri Jul 23 11:00:43 2010 (r210408)
@@ -24,7 +24,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd June 3, 2010
+.Dd July 23, 2010
.Dt GPART 8
.Os
.Sh NAME
@@ -84,9 +84,9 @@ utility:
.\" ==== ADD ====
.Nm
.Cm add
-.Fl b Ar start
-.Fl s Ar size
.Fl t Ar type
+.Op Fl b Ar start
+.Op Fl s Ar size
.Op Fl i Ar index
.Op Fl l Ar label
.Op Fl f Ar flags
@@ -171,9 +171,13 @@ Add a new partition to the partitioning
The partition begins on the logical block address given by the
.Fl b Ar start
option.
-Its size is expressed in logical block numbers and given by the
+Its size is given by the
.Fl s Ar size
-option.
+option. SI unit suffixes are allowed. One or both
+.Fl b
+and
+.Fl s
+options can be ommitted. If so they are automatically calculated.
The type of the partition is given by the
.Fl t Ar type
option.
@@ -542,7 +546,7 @@ from a
partition, and install bootstrap code into it.
This partition must be larger than
.Pa /boot/gptboot ,
-or the GPT boot you are planning to write.
+or the GPT boot you are planning to write, but smaller than 545 KB.
A size of 15 blocks (7680 bytes) would be sufficient for
booting from UFS but let's use 128 blocks (64 KB) here in
this example, in order to reserve some space for potential
@@ -569,7 +573,7 @@ Create a 512MB-sized
.Cm freebsd-ufs
partition that would contain UFS where the system boots from.
.Bd -literal -offset indent
-/sbin/gpart add -b 0 -s 1048576 -t freebsd-ufs da0
+/sbin/gpart add -s 512M -t freebsd-ufs da0
.Ed
.Pp
After having created all required partitions, embed bootstrap code into them.
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