I fixed the problem, I have several mdadm RAID arrays but mdadm is not part of the installation and it looks like grub-install need that package as a dependency to identify the array.
The workaround: Start the installation in 'Try Ubuntu' mode, don't fill up the user account information. Open a terminal and chroot into /target Install mdadm Fill user data and continue installation. Regards. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1956972 Title: grub-install fatal error during installation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1956972/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
