16.04 LTS is supported until April 2020 (maintenance), so it's recommended to use 18.04 LTS (18.10 not being LTS and short in support, see : https://ubuntu.com/about/release-cycle ).
This bug does not apply to fresh installs (although it may be related) while wiping the disk, see initial post. Make sure to check your BIOS settings (EFI/non-EFI, boot sector protection) and please post a new full bug report with full details if you have issues ( I suggest on 18.04 LTS). Thank you. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1766945 Title: (EFI on top of legacy install) choosing "replace" or "resize" options in partitioning may lead to an install failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partman-auto/+bug/1766945/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs