diff --git a/scripts/functions.sh b/scripts/functions.sh
index f7751ac..a101276 100644
--- a/scripts/functions.sh
+++ b/scripts/functions.sh
@@ -281,6 +281,15 @@ disk_create_luks() {
 		|| die "Could not open luks encrypted device '$device' ($id)"
 }
 
+disk_create_dummy() {
+	local new_id="${arguments[new_id]}"
+	local device="${arguments[device]}"
+	if [[ $disk_action_summarize_only == "true" ]]; then
+		add_summary_entry __root__ "$new_id" "$device" "" ""
+		return 0
+	fi
+}
+
 init_btrfs() {
 	local device="$1"
 	local desc="$2"
@@ -391,12 +400,13 @@ apply_disk_action() {
 	unset known_arguments
 	unset arguments; declare -A arguments; parse_arguments "$@"
 	case "${arguments[action]}" in
-		'create_gpt')       disk_create_gpt       ;;
-		'create_partition') disk_create_partition ;;
-		'create_raid')      disk_create_raid      ;;
-		'create_luks')      disk_create_luks      ;;
-		'format')           disk_format           ;;
-		'format_btrfs')     disk_format_btrfs     ;;
+		'create_gpt')        disk_create_gpt       ;;
+		'create_partition')  disk_create_partition ;;
+		'create_raid')       disk_create_raid      ;;
+		'create_luks')       disk_create_luks      ;;
+		'create_dummy')      disk_create_dummy     ;;
+		'format')            disk_format           ;;
+		'format_btrfs')      disk_format_btrfs     ;;
 		*) echo "Ignoring invalid action: ${arguments[action]}" ;;
 	esac
 }
diff --git a/scripts/internal_config.sh b/scripts/internal_config.sh
index 4d92ec2..949ca8d 100644
--- a/scripts/internal_config.sh
+++ b/scripts/internal_config.sh
@@ -48,15 +48,6 @@ only_one_of() {
 	done
 }
 
-create_new_id_directly() {
-	local id="$1"
-	[[ $id == *';'* ]] \
-		&& die_trace 2 "Identifier contains invalid character ';'"
-	[[ ! -v DISK_ID_TO_UUID[$id] ]] \
-		|| die_trace 2 "Identifier '$id' already exists"
-	DISK_ID_TO_UUID[$id]="$(load_or_generate_uuid "$(base64 -w 0 <<< "$id")")"
-}
-
 create_new_id() {
 	local id="${arguments[$1]}"
 	[[ $id == *';'* ]] \
@@ -196,6 +187,23 @@ create_luks() {
 	DISK_ACTIONS+=("action=create_luks" "$@" ";")
 }
 
+# Named arguments:
+# new_id:  Id for the new luks
+# device:  The device
+create_dummy() {
+	local known_arguments=('+new_id' '+device')
+	local extra_arguments=()
+	declare -A arguments; parse_arguments "$@"
+
+	create_new_id new_id
+
+	local new_id="${arguments[new_id]}"
+	local device="${arguments[device]}"
+	local uuid="${DISK_ID_TO_UUID[$new_id]}"
+	create_resolve_entry_device "$new_id" "$device"
+	DISK_ACTIONS+=("action=create_dummy" "$@" ";")
+}
+
 # Named arguments:
 # id:     Id of the device / partition created earlier
 # type:   One of (bios, efi, swap, ext4, btrfs)
@@ -387,8 +395,7 @@ create_btrfs_raid_layout() {
 		for i in "${!extra_arguments[@]}"; do
 			[[ $i != 0 ]] || continue
 			dev_id="root_dev$i"
-			create_new_id_directly "$dev_id"
-			create_resolve_entry_device "$dev_id" "${extra_arguments[$i]}"
+			create_dummy new_id="$dev_id" device="${extra_arguments[$i]}"
 			root_ids="${root_ids}$dev_id;"
 		done
 	fi