Gifting an Apple product is bad to begin with.

This is the log https://ufile.io/p5wj1hu0

I'm not sure if this is relevant, but I added pci=nommconf to the kernel parameters as I had errors similar to the one in this topic, otherwise the log was over 40 000 lines long.

Edit: I'm not sure if this is exactly a kernel problem, as I get the same error when booting with the LTS kernel, which is older than the one installed with the offline installer.

This didn't help :/

Thank you for your time and patience!

Could you please take a look at the comments from abrer and Illecors, I have shares a lot of info there.

I got another errors now

https://postimg.cc/Z9dyg1Vn

It got stuck at the same spot.

they are under /02ef85f9edc146d598502c1b296ff64a/6.4.12-arch1-1/, but yes.

EndeavourOS is using dracut by default.

Edit: we tried rebuilding initramfs before, but it didn't help

I'm on systemd-boot. Where isn't a directory loaders under loader, but I found the parameters under /etc/kernel/cmdline:

nvme_load=YES nowatchdog rw root=UUID=9ae3c50f-be08-4594-ac30-2d094375868d