Provided that you reached the official Manjaro download page, the choices you suggest don’t exist are revealed by clicking the More button – right next to the Download button:
Yes, it likely should. Manjaro ISOs can be installed to either UEFI based or Legacy (BIOS/MBR) based computers.
Not according to your mainboard manual.
However, in that general timeframe (when UEFI was in it’s infancy) occasionally a manufacturer might offer a (highly experimental) UEFI BIOS which the user would need to apply. This was uncommon, but still a possibility. If you didn’t do this, or upon entering your BIOS you can find nothing indicating UEFI capability, then this is likely not the case.
Creation of a UEFI compatible Ventoy USB is the focus of the guide – it states:
To create a Ventoy USB that works in a UEFI environment, a GPT partition scheme should be selected, as shown in the image above.
Ventoy actually defaults to creating a Master Boot Record (MBR) partition scheme, so that change was not needed for a computer that doesn’t support UEFI – in that case, the "Ventoy in Device and the Ventoy USB should both have shown “MBR” before creating the Ventoy USB.
That depends on the problem, which is unclear.
- User error?
- Something else?
Impossible to say without more information, and information that might be needed cannot be easily obtained until you can at least boot into the ISO’s live environment.
Naturally, questions about Arch (proper) should be directed to the Arch forums.
If you now have Arch installed, how did you install it – using Ventoy (if so, which Ventoy settings were successful for you?), or another method?
Let us know if you’d prefer to continue using Arch now that it’s installed, and we can simply close this topic without a solution.
Regards.
Edit:- An afterthought:
If you had a UEFI BIOS then that might also infer that Secure Boot would need to be disabled in the BIOS. Manjaro will not boot with it enabled.
However, this is an unlikely scenario for a mainboard of that vintage, but still worth mentioning on the chance that it does use an experimental UEFI BIOS..