Uairhahs

Misleading, I have a dual boot set-up with multiple UKIs that require ~300MiB each and therefore have a 4GB EFI part, there is no strict required size for a EFI partition and no it does not affect boot times. OP, If I were you, I would familiarise myself with chroot. When you resize your Linux partition to accommodate a larger boot partition (the first partition) often times partition UUIDs (unique universal identifier) have a quirk of wanting to change that then requires you to update your /etc/fstab to tell Linux where to look for all your partitions, without being able to directly boot your OS. Is it possible to grow your EFI and resize your Linux Part? Yes. Is is an easy risk free process? Absolutely not. If you prefer doing a clean instal with less manual work I would follow the resize and reinstall all approach described above.

I also recommend keeping a Live boot USB at hand in case something goes wrong.

Always has been

Highly recommend this for you OP. This would be the easiest course of action. Do you have to use Konsole, yes but for a few commands and once done you can do everything you need via GUI and not have to touch shell again for daily operations.

Catchy have a very powerful script that attaches all their pacman.conf (list of places where arch will look for it’s software)

Here’s a link to the section Adding CachyOS to existing Arch Install

Once that’s done you only need one more command

sudo pacman -Syu octopi

Octopi will let you manage all your software and kernel updates without having to touch terminal or having to use flatpaks.

I would recommend packages:

• cachyos-hooks
• linux-cachyos
• linux-cachyos-header
• cachyos-kernel-manager
• proton-cachyos
• wine-cachyos
• cachyos-gaming-meta

This will have you fully set up and ready to seamlessly game on your machine without having to reinstall a OS.