Hi there,
Would appreciate any help, please.
I have EOS installed, but I am needing to install Windows 10.
I created a bootable media using Unetbootin, with the correct Windows 10 ISO.
I plug this same USB media and try to boot from it, but always EndeavourOS is started, instead. Even selecting the USB media at boot, it does not boot.
Already tried several options of formatting this drive (fat32, ext4, ntfs), without success.
Any idea about how could I solve this, please?
Thanks in advance.
Have you gone into the Bios settings and select to boot from usb?
Edit: Or hit the appropriate Fkey on boot to do that.
Yes. I do this, but the USB is not loaded. The already installed OS is always loaded (EOS).
Try Ventoy.
It has worked for me to boot up a Windows ISO.
Why are you using Unetbootin? All you have to do to create a boot-able Windows usb is do it from Windows or you can download it from the Microsoft site and it creates the usb.
So you either download the Windows 10 or 11 (Windows Assistant)
Or you download the Windows ISO and it creates the install media on usb.
You can do this for Windows 11 or Windows 10.
https://www.microsoft.com/en-ca/software-download/windows11
Edit:
https://www.microsoft.com/en-ca/software-download/windows10ISO
I will try. Thank you.
So, that’s because I don’t have any Windows installation here, unfortunately. I only have EOS.
So I needed to create this bootable media while I am on Linux.
Sometimes these Windows bootable usb won’t work unless created with the right tool or process. I’ve found this myself. Normally i try to use a method i know that always works. From Windows is easiest. 
I’ll also reiterate from @pebcak I have successfully installed Windows 10 and 11 from ventoy - you just need to make sure secure boot is off
Thanks, guys. In the reality, I ended using Microsoft’s own tool for media creation. It worked.
But I’ll also keep Ventoy recomendation. 