SHELL

ARCH_LINUX : /oldroot BUG

sudo nano /etc/mkinitcpio.conf

change:
HOOKS="base udev autodetect modconf block keyboard keymap filesystems fsck"
to:
HOOKS="base udev autodetect modconf block keyboard keymap filesystems fsck shutdown"

sudo mkinitcpio -P
sudo grub-mkconfig -o /boot/grub/grub.cfg

sudo systemctl restart systemd-coredump.socket
sudo systemctl reset-failed