diff --git a/entry.sh b/entry.sh
index 242aafc..b903ae5 100755
--- a/entry.sh
+++ b/entry.sh
@@ -55,7 +55,7 @@ function first_stage(){
 	vgcreate vg0 /dev/mapper/cryptlvm
 	echo lvcreate /dev/vg0 --name=root --size=100G
 	lvcreate /dev/vg0 --name=root --size=100G
-	yes | mkfs.ext4 /dev/vg0/root
+	yes | mkfs.btrfs /dev/vg0/root
 	echo lvcreate /dev/vg0 --name=swap --size=16G
 	lvcreate /dev/vg0 --name=swap --size=16G
 	mkswap /dev/vg0/swap
@@ -66,6 +66,9 @@ function first_stage(){
 	debootstrap sid $TARGET
 	mount ${DEVICE}1 $TARGET/boot
 	echo mount ${DEVICE}1 $TARGET/boot
+	genfstab -U $TARGET | tee $TARGET/etc/fstab
+	lsblk -lpo NAME,UUID | grep $DEVICE | awk '{print $1}'
+	echo cryptlvm UID none luks > $TARGET/etc/crypttab
 }
 
 function second_stage(){
@@ -75,3 +78,5 @@ function second_stage(){
 	echo -n > /etc/motd
 	apt install -y linux-image-amd64 grub2 cryptsetup btrfs-progs lvm2 locales tzdata keyboard-configuration console-common
 }
+
+//TODO crypttab