diff --git a/iso/debian12/preseed.cfg b/iso/debian12/preseed.cfg
index e97da42..3f46346 100644
--- a/iso/debian12/preseed.cfg
+++ b/iso/debian12/preseed.cfg
@@ -9,10 +9,6 @@
 ##
 
 
-# Collect and store information from user
-d-i partman/early_command string \
-       sh /cdrom/debconf_early
-
 # Copy some things before running bootstrap
 d-i preseed/late_command string \
        lvm lvremove sys/scratch --yes \
@@ -28,10 +24,15 @@ d-i preseed/late_command string \
 # Finicky bits
 ##
 
-# Use nvme0n1 if available else assume sda
-d-i partman/late_command string \
-    if [ -e /dev/nvme0n1 ]; then disk=/dev/nvme0n1; else disk=/dev/sda; fi; \
-    debconf-set partman-auto/disk "$disk"; echo "Disk Selected: $disk"
+# Collect information from user using debconf template
+# Use nvme0n1 if available, else vda, else assume sda
+d-i partman/early_command string \
+       sh /cdrom/debconf_early \
+    && if [ -e /dev/nvme0n1 ]; then disk=/dev/nvme0n1; \
+       elif [ -e /dev/vda ]; then disk=/dev/vda; \
+       else disk=/dev/sda; fi \
+    && debconf-set partman-auto/disk "$disk" \
+    && dd if=/dev/zero of="$disk" count=1024 count=2
 
 
 ##
diff --git a/iso/debian12/preseed_test.patch b/iso/debian12/preseed_test.patch
index 7e9cc87..7173c64 100644
--- a/iso/debian12/preseed_test.patch
+++ b/iso/debian12/preseed_test.patch
@@ -1,8 +1,8 @@
-153c153
+154c154
 < d-i netcfg/dhcp_options select Configure network manually
 ---
 > #d-i netcfg/dhcp_options select Configure network manually
-227c227
+228c228
 < #d-i finish-install/reboot_in_progress note
 ---
 > d-i finish-install/reboot_in_progress note