Waxing Cerebral

I have been frustrated on numerous Linux systems where I have to use custom boot switches in Grub, so add them to the relevant entry in /boot/grub/menu.lst, but then a new kernel version (which adds a new boot entry) then doesn't have this new option. This has been simply annoying in the past because I've had to go back in and add the text to the entry. But now I've built a machine for a paying customer and I can't go round every time there's a kernel update!

It turns out the solution is simple:
Between the flags
### BEGIN AUTOMAGIC KERNELS LIST
and
## ## End Default Options ##
are settings that the updater will read in order to create the new boot entries.

The one we want is

Add text here and it will get added to any new boot list entries.


While I'm on the topic, another useful setting in this set is
which lets us reduce the number of kernels that remain as options in the boot list