Dr. Nikolaus Klepp wrote:
The process is triggered by one of the many raceconditions introduced in systemd. If you can, get rid of systemd, install devuan or exegnulinux or antix or ....
no need to do so. just install ii sysv-rc 2.88dsf-59.9 all System-V-like runlevel change mechanism ii sysvinit-core 2.88dsf-59.9 amd64 System-V-like init utilities ii sysvinit-utils 2.88dsf-59.9 amd64 System-V-like utilities
trash systemd-sysv and reboot
if you keep systemd-sysv add in /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT ..... init=/lib/sysvinit/init
and update-initramfs
but it could be also a disk issue or unclean fs - probably you don't use ext4 and/or root is setup to remount ro on error
boot from rescue and fsck
regards