diff --git a/tools/boot/install-boot.sh b/tools/boot/install-boot.sh
index 7f6bf3c8c342..d2b3eacfa48f 100755
--- a/tools/boot/install-boot.sh
+++ b/tools/boot/install-boot.sh
@@ -15,6 +15,11 @@ die() {
     exit 1
 }
 
+doit() {
+    echo $*
+    eval $*
+}
+
 find-part() {
     dev=$1
     part=$2
@@ -30,7 +35,7 @@ boot_nogeli_gpt_zfs_legacy() {
     if [ -z "$idx" ] ; then
 	die "No freebsd-boot partition found"
     fi
-    gpart bootcode -b ${gpt0} -p ${gpt2} -i $idx $dev
+    doit gpart bootcode -b ${gpt0} -p ${gptzfs2} -i $idx $dev
     exit 0
 }
 
@@ -42,7 +47,7 @@ boot_nogeli_gpt_ufs_legacy() {
     if [ -z "$idx" ] ; then
 	die "No freebsd-boot partition found"
     fi
-    gpart bootcode -b ${gpt0} -p ${gpt2} -i $idx $dev
+    doit gpart bootcode -b ${gpt0} -p ${gpt2} -i $idx $dev
     exit 0
 }
 
@@ -58,9 +63,9 @@ boot_nogeli_mbr_zfs_legacy() {
     # search to find the freebsd-zfs partition within the slice
     # Or just assume it is 'a' because it has to be since it fails otherwise
     dd if=${dst}/boot/zfsboot of=/tmp/zfsboot1 count=1
-    gpart bootcode -b /tmp/zfsboo1 ${dev}s${s}	# Put boot1 into the start of part
+    doit gpart bootcode -b /tmp/zfsboo1 ${dev}s${s}	# Put boot1 into the start of part
     sysctl kern.geom.debugflags=0x10		# Put boot2 into ZFS boot slot
-    dd if=${dst}/boot/zfsboot of=/dev/${dev}s${s} iseek=1 seek=1024
+    doit dd if=${dst}/boot/zfsboot of=/dev/${dev}s${s} iseek=1 seek=1024
     sysctl kern.geom.debugflags=0x0
 
     exit 0
@@ -70,12 +75,12 @@ boot_nogeli_mbr_ufs_legacy() {
     dev=$1
     dst=$2
 
-    gpart bootcode -b ${mbr0} ${dev}
+    doit gpart bootcode -b ${mbr0} ${dev}
     s=$(findpart $dev "freebsd-ufs")
     if [ -z "$s" ] ; then
 	die "No freebsd-zfs slice found"
     fi
-    gpart bootcode -p ${mbr2} ${dev}s${s}
+    doit gpart bootcode -p ${mbr2} ${dev}s${s}
     exit 0
 }