compress bootloader files on live media

diff --git a/Makefile b/Makefile
index 3b333bd6ca95a9f58af3bc49a1fb3938656e47de..e1e77e0ded67f2792b94d619d08e8a0eb33f43a7 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -329,7 +329,7 @@ _format_boot: ${PBOOT}
 _format: _format_root _format_boot
 
 _iso_image: ${ISOROOT}
-       grub-mkrescue -o "$${ISO}" "$${ISOROOT}"
+       grub-mkrescue --compress=xz -o "$${ISO}" "$${ISOROOT}"
 
 .PHONY: _syslinux_efi32 _syslinux_efi64 _syslinux_bios
 .PHONY: _grub_efi32 _grub_efi64