I'm trying to install Lubuntu, first with dual boot with windows, then alone, and I'm not able to install it because I have always the same error when the process are going to create GRUB.
This is the error, and I don't know what am I doing wrong.
The 'grub-efi-amd64-signed' package failed to install into /target/. Without enter code here`the GRUB boot loader, the installed system will not boot
When I have tried to install it twice alone, I have created this partitions:
/dev/sda1 ext4 /
/dev/sda3 ext4 /home
/dev/sda4 ext4 /var
The difference between installations is that the first time I have selected /dev/sda2 the place where create GRUB and the second time I have selected /dev/sda. And I have get it the same error explained above.
I'm trying to do the installations through USB booteable
What am I doing wrong?