No Grub, and no access to the system

[SGS]

@Alnone

what i get is a black screen

Computer doesn’t boot, boots to a black screen, or stops at a message

While there are many potential reasons why your installation doesn’t boot to a desktop, the primary reason is that the graphics drivers haven’t loaded correctly so your login/display manager (DM) doesn’t start. This is why you get a “black screen” or stuck at an [ OK ] Started some service message. The normal reason for this is that you have the incorrect driver version for the kernel. This can happens when the mirror you are updating from is not fully synchronised, or times out, and so y…

or

@petsam

The easy way to walk out with this is to reinstall Garuda

or use any other Linux on your multiboot system.
Cheers