Thank you for taking the time to report this bug and helping to make Ubuntu better. The version of update-initramfs that you likely have installed is unable to work on a persistent usb stick. You can resolve this issue by upgrading the version of casper on your system. This can be done via the commands:
sudo apt-get update; sudo apt-get install casper Then performing the software update or installation that you were originally trying. If this does not resolve your bug please set its status back to New. Thanks in advance! ** Tags added: needs-new-casper ** Changed in: initramfs-tools (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/1616534 Title: package initramfs-tools 0.122ubuntu8.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 Status in initramfs-tools package in Ubuntu: Invalid Bug description: I only know that Ubuntu desktop crashed after I decided to quite the installer and use GParted to check partitions. Don't know exactly what was the desktop was trying to do at the time as the screen went blank. ProblemType: Package DistroRelease: Ubuntu 16.04 Package: initramfs-tools 0.122ubuntu8.1 ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 Uname: Linux 4.4.0-31-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CasperVersion: 1.376 Date: Wed Aug 24 16:12:03 2016 ErrorMessage: subprocess installed post-installation script returned error exit status 1 LiveMediaBuild: It PackageArchitecture: all RelatedPackageVersions: dpkg 1.18.4ubuntu1.1 apt 1.2.12~ubuntu16.04.1 SourcePackage: initramfs-tools Title: package initramfs-tools 0.122ubuntu8.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1616534/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp