Rewrite some of the disk setup documentation to be clearer and contain

less obsolete information. Also move the entropy command down the list --
the list is ordered by likelihood of use rather than alphabetically.

MFC after:	1 week

usr.sbin/bsdinstall/bsdinstall.8

@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd October 15, 2013
+.Dd October 31, 2014
 .Dt BSDINSTALL 8
 .Os
 .Sh NAME
@@ -73,10 +73,6 @@ targets.
 .Bl -tag -width ".Cm jail Ar destination"
 .It Cm auto
 Run the standard interactive installation, including disk partitioning.
-.It Cm entropy
-Reads a small amount of data from
-.Pa /dev/random
-and stores it in a file in the new system's root directory.
 .It Cm jail Ar destination
 Sets up a new chroot system at
 .Pa destination ,
@@ -119,32 +115,28 @@ If
 is set, also configures the network interfaces of the current system to match.
 .It Cm autopart
 Provides the installer's interactive guided disk partitioner for single-disk
-installations. Partitions disks, runs
-.Xr newfs 8 ,
-and writes the new system's
-.Pa fstab .
+installations. Defaults to UFS.
 .It Cm zfsboot
-Provides the installer's
-.Pq experimental
-interactive/scriptable ZFS partitioner for multi-disk installations.
+Provides an alternative ZFS-only automatic interactive disk partitioner.
 Creates a single
 .Ic zpool
-with datasets and writes to the new system's
-.Pa rc.conf ,
-.Pa loader.conf ,
+with separate datasets for
+.Pa /tmp ,
+.Pa /usr ,
+.Pa /usr/home ,
+.Pa /usr/ports ,
+.Pa /usr/src ,
 and
-.Pa fstab .
-Supports
-.Xr geli 8 ,
-.Xr gnop 8 ,
-and many other features.
+.Pa /var .
+Optionally can set up
+.Xr geli 8 
+to encrypt the disk.
 .It Cm partedit
-Provides the installer's interactive manual disk partitioner, with support
-for multi disk setups, non-UFS file systems, and manual selection of
-partition schemes. Partitions disks, runs
-.Xr newfs 8 ,
-and writes the new system's
-.Pa fstab .
+Provides the installer's interactive manual disk partitioner with an interface
+identical to
+.Xr sade 8 .
+Supports multiple disks as well as UFS, ZFS, and FAT file systems. ZFS
+is set up with one pool and dataset per partition.
 .It Cm scriptedpart Ar parameters
 Sets up disks like
 .Cm autopart
@@ -190,13 +182,19 @@ keyword causes the partition to take all the remaining space on the disk. The
 .Ar type
 option chooses the
 .Xr gpart 8
-filesystem type (e.g. freebsd-ufs or freebsd-swap).
+filesystem type (e.g. freebsd-ufs, freebsd-zfs, or freebsd-swap).
 The optional
 .Ar mount point
 argument sets where the created partition is to be mounted in the installed
 system. As an example, a typical invocation looks like:
 .Pp
 bsdinstall scriptedpart ada0 { 20G freebsd-ufs /, 4G freebsd-swap, 20G freebsd-ufs /var, auto freebsd-ufs /usr }
+.Pp
+A shorter invocation to use the default partitioning (as
+.Cm autopart
+would have used) on the same disk:
+.Pp
+bsdinstall scriptedpart ada0
 .It Cm mount
 Mounts the file systems previously configured by
 .Cm autopart ,
@@ -235,6 +233,10 @@ Interactively sets the time, date, and time zone of the new system.
 Queries the user for the system daemons to begin at system startup,
 writing the result into the new system's
 .Pa rc.conf .
+.It Cm entropy
+Reads a small amount of data from
+.Pa /dev/random
+and stores it in a file in the new system's root directory.
 .It Cm config
 Installs the configuration files destined for the new system (e.g. rc.conf
 fragments generated by
@@ -346,14 +348,14 @@ which is passed to the
 .Cm scriptedpart
 target to control disk setup.
 Alternatively,
+to use
+.Cm zfsboot
 instead of
-.Ev PARTITIONS ,
+.Cm partedit ,
 the preamble can contain the variable
 .Ev ZFSBOOT_DATASETS
-which is parsed by the
-.Pq experimental
-.Cm zfsboot
-target to control ZFS datasets/options of the boot pool setup.
+instead of 
+.Ev PARTITIONS .
 .Ss SETUP SCRIPT
 Following the preamble is an optional shell script, beginning with a #!
 declaration. This script will be run at the end of the installation process