[Trisquel-users] Re : Trisquel 6: updates break GRUB

[lcerf]

Booting "by hand" and letting APT do the job is another way to go. This time  
I am not even sure you need to execute 'sudo update-grub': 'apt-get' has  
probably executed it for you (command called from a post-processing script).  
Anyway, it does not hurt.