That's odd, now the error messages are gone entirely, even though the only change is to add "set -x" to the resume premount script to show debug output. I have a gut feeling that the update-initramfs -u (which rebuilds the initramfs) somehow "fixed" this. Unfortunately we now lost the evidence what was wrong in the first place :-(
Anyway, the script shows nothing out of the ordinary. Can you remove the -x from the file again, with sudo sed -i '1 s/ -x$//' /usr/share/initramfs-tools/scripts/local-premount/resume sudo update-initramfs -u Just to double-check, is the error message coming back now? ** Package changed: systemd (Ubuntu) => initramfs-tools (Ubuntu) ** Changed in: initramfs-tools (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1398025 Title: Errors messages like "error: /dev/sdb: No medium found" on booting Status in initramfs-tools package in Ubuntu: Incomplete Bug description: I'm using Ubuntu 15.04 dev with udev 217-1ubuntu1 and for a few days I'm seeing on every boot errors like "error: /dev/sdb: No medium found". Here is the content of /var/log/boot.log: Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. Begin: Running /scripts/local-premount ... error: /dev/sdb: No medium found error: /dev/sdc: No medium found error: /dev/sdd: No medium found error: /dev/sde: No medium found error: /dev/sdb: No medium found error: /dev/sdc: No medium found error: /dev/sdd: No medium found error: /dev/sde: No medium found done. Begin: Running /scripts/local-bottom ... done. done. Begin: Running /scripts/init-bottom ... done. * Setting up X socket directories... [210G [204G[ OK ] * cryptswap1 (running)... [210G * Starting early crypto disks... [210G [204G[ OK ] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1398025/+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