Public bug reported: I have installed from this CD before, and everything went smoothly. The prior install was against an internal SSD.
I am now installing on a USB stick, and had to remove /usr/lib/ubuquity /apt-setup/generators/40cdrom to fix a previous failure. (I actually moved the file under the home directory. I hope that didn't cause the problem.) I will reimage the installation stick, reformat the destination stick, and try again. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: ubiquity 20.04.15 ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30 Uname: Linux 5.4.0-26-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: pass CasperVersion: 1.445 Date: Tue Aug 11 09:13:18 2020 InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash --- LiveMediaBuild: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) SourcePackage: ubiquity UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: ubiquity (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ubiquity-20.04.15 ubuntu ** Attachment added: "partman" https://bugs.launchpad.net/bugs/1891170/+attachment/5400699/+files/partman -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891170 Title: Disk I/O error from Install. Removed 40cdrom from install disk to correct last reported error. I have installed successfully from the thumbdrive. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1891170/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs