Even the most straight-forward option "Erase disk and install Ubuntu" failed for me on non-UEFI system when installing from USB. I noticed that 20.04 created a single bootable partition while 20.10 creates additional BIOS Boot and EFI System partitions.
The Bug #1893964 Comment #8 workaround (doing grub-install manually) worked for me but after updating I still had to correct /etc/fstab for the /boot/efi device partition. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1901137 Title: UEFI on Legacy - grub-install fails due to no space left on ESP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1901137/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
