Where did you happen to get the 4.4.21 kernel? That is an upstream kernel and not an official Ubuntu kernel like 4.4.0-57.
It might be good to boot 4.4.0-57 and apply the latest updates. ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Tags added: kernel-da-key -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1653636 Title: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown- block(0,0) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1653636/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
