Bug#554683: grub-pc: Build list of kernels at boot time

[Stefan Monnier]

reopen 554683
thanks

> GRUB2 scripting is able to do this (see e.g. Super GRUB2 disk) but doing
> so by default will only slowdown boot process

Of course, you can make it go slow by being thorough, but that's not the
only choice.  You could also statically specify which disk/partition to
search, so all it needs to do to find the list of kernels is "ls /boot".
My request is to try and make running grup-update unnecessary, and in
many cases grug-update doesn't do much more than "ls /boot".
Admittedly, I don't have os-prober installed, so maybe reproducing the
behavior of os-prober would make it slower, in which case this part
could still be performed during grub-update rather than during boot.


        Stefan