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I'm brand new to OS development, so I'm sorry for such a basic question.

I'm developing on Linux, Debian 12.4 to be exact. I've followed the Bare Bones guide as closely as I could, built a working cross-compiler, assembled, compiled and linked the code included in the tutorial, and verified that it has a valid multiboot header. There were no errors printed for any of these steps. I followed the directions to create a bootable ISO and tried to run that with QEMU. Booting both the ISO and the kernel binary result in a black screen with a blinking cursor on the left side about a third of the way down the screen.

Any advice is appreciated, thank you.

If you run QEMU by itself without booting your OS, do you see anything?

If you boot your OS and add "-no-reboot" to your QEMU command line, do you see anything?

If you replace the "hlt" in the bootstrap assembly with "nop", do you see anything?