I had the same or a similar problem with installing Ubuntu Budgie 20.10. I hadn't checked the disk with Gparted beforehand as I have never had a problem before and the partitions are normally shown and selectable/changeable as part of the Ubuntu installation process, which I assume should detect errors.
I went on install Ubuntu Budgie 20.04 instead and there were no problems. That suggests to me that there was nothing wrong with my disk and that the problem was caused by a new version of Ubiquity in 20.10 which has a bug. ** Attachment added: "Error message" https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1896525/+attachment/5419975/+files/ubiquity.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896525 Title: Fatal Error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1896525/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
