Public bug reported: I'm trying to create a self contained bootable Ubuntu installation with grub on external drive as well. It fails with the given errors.
ProblemType: Bug DistroRelease: Ubuntu 20.10 Package: ubiquity 20.10.13 ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14 Uname: Linux 5.8.0-25-generic x86_64 ApportVersion: 2.20.11-0ubuntu50 Architecture: amd64 CasperMD5CheckResult: pass CasperVersion: 1.455 Date: Sat Mar 27 18:43:05 2021 InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash --- LiveMediaBuild: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022) RebootRequiredPkgs: linux-image-5.8.0-25-generic linux-base SourcePackage: grub-installer UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub-installer (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug groovy ubiquity-20.10.13 ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921605 Title: Ubuntu installation on external usb drive fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1921605/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs