Index: usr.sbin/bsdinstall/scripts/checksum
===================================================================
--- usr.sbin/bsdinstall/scripts/checksum
+++ usr.sbin/bsdinstall/scripts/checksum
@@ -37,10 +37,13 @@
 	for i in $DISTRIBUTIONS; do
 		items="$items $i `eval echo \\\${status_$(basename $i .txz):-Pending}`"
 	done
-	dialog --backtitle "FreeBSD Installer" --title "Checksum Verification" \
-	    --mixedgauge "Verifying checksums of selected distributions." \
-	    0 0 $percentage $items
-
+	if f_interactive; then
+		dialog --backtitle "FreeBSD Installer" --title "Checksum Verification" \
+		    --mixedgauge "Verifying checksums of selected distributions." \
+		    0 0 $percentage $items
+	else
+		f_dprintf "Checksum verification: $dist"
+	fi
 	CK=`sha256 -q $BSDINSTALL_DISTDIR/$dist`
 	awk -v checksum=$CK -v dist=$dist -v found=0 '{
 		if (dist == $1) {
@@ -62,8 +65,12 @@
 		percentage=$(echo $percentage + 100/`echo $DISTRIBUTIONS | wc -w` | bc)
 	else
 		eval "status_$distname=1"
-		dialog --backtitle "FreeBSD Installer" --title "Error" \
-		    --msgbox "The checksum for $dist does not match. It may have become corrupted, and should be redownloaded." 0 0
+		if f_iteractive; then
+			dialog --backtitle "FreeBSD Installer" --title "Error" \
+			    --msgbox "The checksum for $dist does not match. It may have become corrupted, and should be redownloaded." 0 0
+		else
+			f_dprintf "Checksum verification for $dist failed"
+		fi
 		exit 1
 	fi
 done