I encountered the same bug when I performed an installation that used LVM (I selected the "Use LVM with the new Ubuntu installation" option). When I opened a shell and examined the partition table, it appears that it had already been created. (The disk was empty when I began.) The partition table resembled the one that resulted after I completed the installation, except that the to-be-ESP partition was set up as a Microsoft Basic Data partition, not as an ESP. (Screen shot attached.)
It should also be noted that the error message refers to installing Debian, not Ubuntu. Overall, new users could be confused by this message. It deserves more than a documentation fix. ** Attachment added: "Screen shot showing partition table at time the error message was displayed." https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1447256/+attachment/4414776/+files/partitions.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1447256 Title: "Force UEFI" dialog displayed if user selects custom partitioning To manage notifications about this bug go to: https://bugs.launchpad.net/hundredpapercuts/+bug/1447256/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
