I updated my system using
yaourt -Syua and there was an update for the Linux kernel.
I tried rebooting and got:
loading linux linux...
Then crash and redirection to the emergency shell, like described in the link below: https://bbs.archlinux.org/viewtopic.php?id=237303
I use UEFI and grub.
I can't type anything in the emergency shell because my keyboard doesn't work.
I tried using a bootable archlinux on USB drive but failed with
SQUASHFS: xz decompression failed, data probably corrupt
Details about my hard drive : I have a dual boot Linux/Windows with some system partitions.
Is there a way to fix my system without losing data?