I have a dual boot (W10 + Ubuntu 20.04) made with an external SSD when I want to boot on windows in a "normal config" I do nothing and windows is starting normally.
When I want to boot ubuntu I connect my external SSD through USB and I go in the advanced restart windows option and select my external hardrive then when my system is restarting I have the grub and I select ubuntu so It boots.
When I have finished to play with ubuntu I want to I shutdown my system, disconnect my SSD with Ubuntu and when my system is starting I still have the grub but there is nothing in it. It is just a window with the text "GRUB" and a cli like this :
GRUB
>
And I have to type
exit
each time my system is starting up. To make this stop I need to change my boot menu options and we are going back to the first step.
So my question is : Is there a mean to have a "correct" grub menu each time I start my system even if my ssd is not connected ?