diff --git a/depends b/depends
index fd5f4d1..a29ba2a 100644
--- a/depends
+++ b/depends
@@ -23,4 +23,6 @@ pigz
 arch-test
 mksquashfs:squashfs-tools
 xorriso
-mformat:mtools
\ No newline at end of file
+grub-mkrescue:grub-common
+grub-efi-amd64-bin
+grub-pc-bin
\ No newline at end of file
diff --git a/export-iso/03-finalise/01-run.sh b/export-iso/03-finalise/01-run.sh
index 52d1394..d5fd53e 100755
--- a/export-iso/03-finalise/01-run.sh
+++ b/export-iso/03-finalise/01-run.sh
@@ -8,14 +8,12 @@ fi
 ISO_FILE="${STAGE_WORK_DIR}/${IMG_FILENAME}${IMG_SUFFIX}.iso"
 ISO_TEMP_DIR="${STAGE_WORK_DIR}/iso_temp"
 
-# Step 1: Generate initramfs.
-# Because live-boot-initramfs-tools is installed, the generated initrd will
-# include live-boot hooks that can find and mount the squashfs from the ISO.
-
-# Replace fstab placeholders so initramfs-tools doesn't warn about unknown fs type.
+# Step 1: Replace fstab placeholders so initramfs-tools doesn't warn about unknown fs type.
 sed -i 's/ROOTDEV/LABEL=live-rootfs/g; s/BOOTDEV/LABEL=live-boot/g; s/EFIDEV/LABEL=live-efi/g' \
 	"${ROOTFS_DIR}/etc/fstab"
 
+# Step 2: Generate initramfs inside the chroot.
+# live-boot-initramfs-tools is installed so the initrd will include live-boot hooks.
 on_chroot << EOF
 update-initramfs -k all -c
 if [ -x /etc/init.d/fake-hwclock ]; then
@@ -28,24 +26,9 @@ if [ -f "${ROOTFS_DIR}/etc/initramfs-tools/update-initramfs.conf" ]; then
 	sed -i 's/^MODULES=.*/MODULES=dep/' "${ROOTFS_DIR}/etc/initramfs-tools/initramfs.conf"
 fi
 
-# Step 2: Build a standalone GRUB EFI binary inside the chroot.
-# grub-mkstandalone embeds all required modules so no separate EFI partition is needed.
-on_chroot << EOF
-mkdir -p /tmp/grub-standalone
-grub-mkstandalone \
-	--format=x86_64-efi \
-	--output=/tmp/grub-standalone/bootx64.efi \
-	--modules="part_gpt part_msdos fat iso9660 ext2 normal search \
-	           search_fs_uuid search_fs_file search_label all_video \
-	           gfxterm gfxterm_background" \
-	--locales="" \
-	--fonts=""
-EOF
-
 # Step 3: Assemble ISO directory structure
 mkdir -p "${ISO_TEMP_DIR}/boot/grub"
 mkdir -p "${ISO_TEMP_DIR}/live"
-mkdir -p "${ISO_TEMP_DIR}/EFI/boot"
 
 # Copy kernel and initrd — find the latest versioned files in /boot
 VMLINUZ=$(find "${ROOTFS_DIR}/boot" -maxdepth 1 -name "vmlinuz-*" -type f | sort -V | tail -1)
@@ -57,22 +40,20 @@ if [ -z "${VMLINUZ}" ] || [ ! -f "${VMLINUZ}" ]; then
 	exit 1
 fi
 
+if [ -z "${INITRD}" ] || [ ! -f "${INITRD}" ]; then
+	echo "ERROR: Could not find initrd in ${ROOTFS_DIR}/boot/"
+	ls "${ROOTFS_DIR}/boot/" || true
+	exit 1
+fi
+
 cp "${VMLINUZ}" "${ISO_TEMP_DIR}/boot/vmlinuz"
 cp "${INITRD}" "${ISO_TEMP_DIR}/boot/initrd.img"
 
-# Copy GRUB EFI binary from chroot
-cp "${ROOTFS_DIR}/tmp/grub-standalone/bootx64.efi" "${ISO_TEMP_DIR}/EFI/boot/bootx64.efi"
-
-# Step 4: Write the live-boot grub.cfg
+# Step 4: Write the GRUB menu config
 cat > "${ISO_TEMP_DIR}/boot/grub/grub.cfg" << 'GRUBEOF'
 set default=0
 set timeout=5
 
-insmod part_gpt
-insmod part_msdos
-insmod fat
-insmod iso9660
-insmod ext2
 insmod all_video
 insmod gfxterm
 
@@ -99,29 +80,18 @@ mksquashfs "${ROOTFS_DIR}" "${ISO_TEMP_DIR}/live/filesystem.squashfs" \
 	-e tmp \
 	-e run
 
-# Step 6: Create small EFI FAT image for El Torito EFI boot entry
-EFI_IMG="${ISO_TEMP_DIR}/efi.img"
-dd if=/dev/zero of="${EFI_IMG}" bs=1M count=10
-mkfs.vfat "${EFI_IMG}"
-mmd -i "${EFI_IMG}" ::/EFI ::/EFI/boot
-mcopy -i "${EFI_IMG}" "${ISO_TEMP_DIR}/EFI/boot/bootx64.efi" ::/EFI/boot/bootx64.efi
-
-# Step 7: Build the ISO (UEFI El Torito)
-xorriso -as mkisofs \
-	-r -J -joliet-long \
-	-eltorito-alt-boot \
-	-e efi.img \
-	-no-emul-boot \
-	-isohybrid-gpt-basdat \
-	-o "${ISO_FILE}" \
-	"${ISO_TEMP_DIR}"
+# Step 6: Build the ISO with grub-mkrescue (handles BIOS + UEFI automatically)
+grub-mkrescue \
+	--output="${ISO_FILE}" \
+	"${ISO_TEMP_DIR}" \
+	-- \
+	-V "ChillcraftOS"
 
 rm -rf "${ISO_TEMP_DIR}"
-rm -f "${ROOTFS_DIR}/tmp/grub-standalone/bootx64.efi"
 
 echo "Live ISO created at ${ISO_FILE}"
 
-# Step 8: Deploy
+# Step 7: Deploy
 mkdir -p "${DEPLOY_DIR}"
 rm -f "${DEPLOY_DIR}/${ARCHIVE_FILENAME}${IMG_SUFFIX}.iso"
 cp "${ISO_FILE}" "${DEPLOY_DIR}/${ARCHIVE_FILENAME}${IMG_SUFFIX}.iso"