Trisquel 8 with kernel 4.15.0-99 BusyBox error

Can you boot the previous kernels? GRUB should still list it in its "Advanced options for Trisquel" (or something like that).

You can chroot from a live session. Boot from a live CD and open a terminal. Then, assuming your root partition is /dev/sda1

$ sudo su
# TARGET=/media/sda1
# mkdir -p $TARGET
# mount /dev/sda1 $TARGET
# mount --bind /dev $TARGET/dev
# mount --bind /dev/pts $TARGET/dev/pts
# mount --bind /proc $TARGET/proc
# mount --bind /sys $TARGET/sys
# cp /etc/resolv.conf $TARGET/etc/
# chroot $TARGET /bin/bash

This places you in a root terminal on the trisquel system. Do whatever you want to do there,e.g., uninstall that kernel.

To exit from chroot:

# control-D

This brings you back to where you were in the live session and you can unmount

# umount -l $TARGET/dev/pts
# umount -l $TARGET/dev
# umount -l $TARGET/proc
# umount -l $TARGET/sys

Hello,

thank you, I managed it. Unfortunately I didn't install all the needed kernel packets, this is why I got this error message.

Now the OS is booting fine, but after the login the system is frozen at 90% of my efforts.

Any advice how to fix this error?