I installed the latest rolling version on one of my disc partitions. On the same disk, I have Windows (before) and Ubuntu (after). The issue is the following: at the end of the installation, when the system reboot, Netrunner was not visible at all (I can start on Windows or Ubuntu).
OK, not a big deal: I booted on Ubuntu, run update-grub and restarted. Then, the option to start Netrunner was available.
But is seems I have an issue to update grub FROM Netrunner. If I run update-grub from Netrunnger, all messages are OK (all boot options found). The file /boot/grub/grub.cfg is modified (at least its modification date is updated). But this has NO EFFECT on the menu of Grub at the boot. Typically, I can change the default line to be selected, but this won’t have any effect. The only way to change Grub is to reboot into Ubuntu, modify options there and run update-grub from Ubuntu. My issue is that I want to erase Ubuntu… but if I do that, I will then loose any possibility to modify Grub…
Does someone know why I can’t update Grub from the NetRunner instllation ? What could be a way to solve this ?