sudo mount /dev/sda1 /mnt
sudo arch-chroot /mnt
pacman -Syu linux
:: Synchronizing package databases...
error: failed to synchronize all databases (unable to lock database)
Ooof can’t connect to internet through either WiFi or USB tethering because of Driver issues. I’ll try the guide I posted here few days back, but it involves Rebooting PC 
. Stil I’ll try to test if it works.