@apt-ghetto Thanks for you're analysis. I have no option to boot in legacy mode...
@apt-ghetto said: > ......you can install Ubuntu in BIOS mode simply by booting the installer in > the BIOS mode. > (Depending on the UEFI you have and how you created the USB stick, this is > not always a simple task) So this the real solution then; detect / make it easy to boot in legacy mode! But this a regression then, I had no problems while installing 16.04 via USB stick. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1771651 Title: The installation fails with a "GRUB installation failed" message. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1771651/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs