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Ubuntu 18.04 LTS not booting after update


sd-executor exit with status 1
systemd failed to open serialization file
failed to fully start freezing system
failed to insert module autofs4


Ubuntu is now using systemd and some services need read/write access, however the disk has only been mounted as ro (read-only).


Boot into upstart mode or use a rescue shell (e.g. boot a live-usb linux). Mount your root filesystem and edit /etc/grub/grub.cfg. Find the line

linux /boot/vmlinuz-4.19-x86_64 root=UUID=xxxxxxx-xxx-xxxx-xxxx-xxxxxxxxxxxxxx ro

and change it to

linux /boot/vmlinuz-4.19-x86_64 root=UUID=xxxxxxx-xxx-xxxx-xxxx-xxxxxxxxxxxxxx rw

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