diff --git a/live-build/ubuntu-cpc/hooks/032-disk-image.binary b/live-build/ubuntu-cpc/hooks/032-disk-image.binary
index 1b6d3099..47275217 100755
--- a/live-build/ubuntu-cpc/hooks/032-disk-image.binary
+++ b/live-build/ubuntu-cpc/hooks/032-disk-image.binary
@@ -44,12 +44,14 @@ create_empty_disk_image "${disk_image}"
 create_empty_partition_table "${disk_image}"
 
 ROOTPART=1
+ROOT_BOOTABLE=1
 if [ -n "$BOOTPART_START" ]; then
 	ROOTPART=2
 	ROOTPART_START="$BOOTPART_END"
+	ROOT_BOOTABLE=
 	create_empty_partition "$disk_image" 1 "$BOOTPART_START" "$BOOTPART_END" 1
 fi
-create_empty_partition "${disk_image}" "$ROOTPART" "$ROOTPART_START" -1
+create_empty_partition "${disk_image}" "$ROOTPART" "$ROOTPART_START" -1 $ROOT_BOOTABLE
 
 mount_image "${disk_image}" "$ROOTPART"