Archlinux boot stops at systemd-fsck. How to download?

Question

Arch Linux

Yesterday I turned off the computer normally, and today it stops at boot:
systemd-fsck: boot: clean
systemd-fsck: home: clean
no further loading:

photo

The system drive is an SSD. Archlinux x64 system.
Can you tell me how to diagnose the problem?

Answer 1

Solution:
1. boot from live-cd.
2. mount the root partition and the boot partition to /mnt
3. login via arch-chroot.
4. reinstall trace. packages:
pacman -Syu mkinitcpio systemd linux