diff --git a/includes/disk-layout.ksi b/includes/disk-layout.ksi
index 0f1fdc1..c3fed5c 100644
--- a/includes/disk-layout.ksi
+++ b/includes/disk-layout.ksi
@@ -1,8 +1,8 @@
 # Initialize the disk
 zerombr
 
-# Remove all partitions
-clearpart --drives=sda --all
+# Remove all partitions and initialize the disk with a GPT partition table
+clearpart --drives=sda --disklabel=gpt --all
 
 # Create partitions
 # The '--size' option takes MB, not MiB