Manjaro no arranca por problemas en la ultima actualización

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Hola,
Primero:

[HowTo] Resolve an unbootable Manjaro (black screen, login failed, cant boot, etc)

When we have problems gaining access to our systems it is difficult to gather information, let alone fix any problems. Here we will cover common causes and solutions to ‘manjaro wont boot’. TTY If your desktop does not load properly then you might still be able to use most, if not all, functionality by dropping to a non-graphical TTY. By default your system will have multiple TTYs, with each corresponding to an Fx key. Your desktop is assigned to one as well - most often F1. You can chang…

Desde runlevel3 o chroot, en el sistema instalado:

sudo pacman -Syu
sudo mkinitcpio -P
sudo update-grub

…por favor devuelva cualquier error.