It definitely is the initramfs. After successfully mounting the root filesystem (sda10) the following messages are displayed:
-- /scripts/init-bottom/udev: line 25: nuke: not found -- done. -- init: line 303: run-init: not found -- Target filesystem does not have requested /sbin/init. -- init: line 303: run-init: not found (5*) -- No init found. Try passing init= bootarg. Yesterday's ext?fs updates triggered an initramfs rebuild. After restoring my backup I reran those updates and had a good look at the initramfs rebuild messages. I saw a complaint about a missing /lib/klibc-*.so file. And indeed that file is missing. I copied the /lib/klibc-wBFLvVtxy4xJqEadIBJMa78iJz8.so from an other Xubuntu installation and reran things: *problem resolved*. ** Changed in: initramfs-tools (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1860683 Title: initramfs hang after today's updates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1860683/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs