<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>I have been experimenting with different versions of 40_custom with the Crux information either before or after the "exec tail -n +3 $0" statement (as the included comment does not make it clear which way it should go). Both caused update-grub to report syntax errors (different ones!). But I have found a temporary work-around.</div><div><br></div><div>What is going wrong is that the "echo", "cat <<EOF" and "EOF" lines in 40_custom are being put into grub.cfg instead of being treated as working instructions. When I edited them out of grub.cfg.new by hand and renamed the resultant file as grub.cfg, it gave me a good boot.<br></div></div></body></html>