# Work around Debian bug #824391.
echo ttySAC2 >> /mnt/xu4/etc/securetty
+# Work around Debian bug #825026.
+echo ledtrig-heartbeat >> /mnt/xu4/etc/modules
+
# Install GRUB, chainloaded from U-Boot via UEFI.
mount --bind /dev /mnt/xu4/dev
mount --bind /proc /mnt/xu4/proc