Troubles with dual boot

What should I look for exactly in output of this command?

EDIT: actually now i can attach pictures. Here’s my output BEFORE i installed nvidia drivers:


From what I’ve seen even after driver installation it still says that none of the drivers are loaded.

About the link to a YT video. I was actually following that exact tutorial. The problem is that I constantly get stuck on some black screen while the guy in the video just successfully boots into installer.

It’s KDE Dragonized Gaming Edition. Filename is “garuda-dr460nized-gaming-linux-zen-210729.iso”.

Nothing happened when I typed the command in.

Tried it. Nothing has changed. Same results as previously.

I also tried running the following command just in case

sudo pacman -Sy nvidia

It downloaded and installed drivers, but still I get stuck after aforementioned Plymouth line. Although there were a few errors so maybe they are the cause of the problem? It says

ERROR: file not found: 'fsck.overlay'