> It may be that the last kernel that was used was not saved
That seems like a good bet, I didn't think to try rebooting twice.
> You have one single bootloader for the whole computer. It usually is in the
MBR of the disk.
So, are you saying that that command writes over previous contents in the MBR
so for instance if in Fedora right now I did $ sudo update-grub, it would
write over the Trisquel grub-update result I'm using now? And is it possible
to install two OSes without bootloaders and depend on a third with grub to do
the os-probe and be able to configure boot up options for all three?
Maybe even install grub as a stand alone, then do subsequent installs in a
way that doesn't disturb the installed grub, and every time you boot it does
os-probe and updates itself. I did see the man pages for grub numbered into
the 30s so maybe you can even make it stand on it's head and spit green
nickels if you know how.