CentOS 7.4 update failed for reason unexpected shutdown then start failed "GRUB>" terminal .

[Mayeen-Uddin]

When try manual boot Like:

grub> ls /boot/vmlinuz-3.10.0- vmlinuz-3.10.0-123.el7.x86_64 vmlinuz-3.10.0-693.el7.x86_64 grub> set root=(hd0,msdos1) grub> linux16 /boot/vmlinuz-3.10.0-123.el7.x86_64 root=/dev/sda1 rw init=/bin/bash grub> initrd /boot/initramfs-3.10.0-123.el7.x86_64.img grub> boot

It open bash shall 4.2 like:

bash-4.2# systemctl start systemd.tergate dbus connection failed when try