diff --git a/lib/buster-preseed.cfg b/lib/buster-preseed.cfg
index f3e110a..a4bfd37 100644
--- a/lib/buster-preseed.cfg
+++ b/lib/buster-preseed.cfg
@@ -72,6 +72,14 @@ d-i clock-setup/ntp boolean true
 # line to prevent this.
 d-i finish-install/keep-consoles boolean true
 
+### Boot loader installation
+# Grub is the default boot loader (for x86). If you want lilo installed
+# instead, uncomment this:
+d-i grub-installer/skip boolean true
+# To also skip installing lilo, and install no bootloader, uncomment this
+# too:
+d-i lilo-installer/skip boolean true
+
 # Avoid that last message about the install being complete.
 d-i finish-install/reboot_in_progress note
 
diff --git a/lib/stretch-preseed.cfg b/lib/stretch-preseed.cfg
index ad8da0f..372c059 100644
--- a/lib/stretch-preseed.cfg
+++ b/lib/stretch-preseed.cfg
@@ -72,6 +72,14 @@ d-i clock-setup/ntp boolean true
 # line to prevent this.
 d-i finish-install/keep-consoles boolean true
 
+### Boot loader installation
+# Grub is the default boot loader (for x86). If you want lilo installed
+# instead, uncomment this:
+d-i grub-installer/skip boolean true
+# To also skip installing lilo, and install no bootloader, uncomment this
+# too:
+d-i lilo-installer/skip boolean true
+
 # Avoid that last message about the install being complete.
 d-i finish-install/reboot_in_progress note