diff --git a/usr.sbin/bsdinstall/bsdinstall.8 b/usr.sbin/bsdinstall/bsdinstall.8
index 503dce7cccf4..8943bb154c8c 100644
--- a/usr.sbin/bsdinstall/bsdinstall.8
+++ b/usr.sbin/bsdinstall/bsdinstall.8
@@ -108,6 +108,21 @@ installations. Partitions disks, runs
 .Xr newfs 8 ,
 and writes the new system's
 .Pa fstab .
+.It Cm zfsboot
+Provides the installer's
+.Pq experimental
+interactive/scriptable ZFS partitioner for multi-disk installations.
+Creates a single
+.Ic zpool
+with datasets and writes to the new system's
+.Pa rc.conf ,
+.Pa loader.conf ,
+and
+.Pa fstab .
+Supports
+.Xr geli 8 ,
+.Xr gnop 8 ,
+and many other features.
 .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
@@ -315,6 +330,15 @@ the preamble can contain a variable
 which is passed to the
 .Cm scriptedpart
 target to control disk setup.
+Alternatively,
+instead of
+.Ev PARTITIONS ,
+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.
 .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