Create a Windows bootable USB on manjaro
If you need to reinstall your Windows operating system, whether it's because you no longer want Linux or because Windows is not booting correctly, you can use Ventoy. However, reinstalling Windows will also delete your Grub bootloader, and you will lose access to any Linux distributions you have installed alongside Windows. Therefore, you'll need to reinstall the Grub bootloader as well.
To begin, install Ventoy from the repositories and ensure that your USB drive is plugged in before launching the software. Then, select "GPT" under partition style, and activate "Secure Boot Support" if it is available on your machine. Click "Install," and Ventoy will create the necessary partitions for you. This process is very fast and should not take long.
pamac install ventoy
Once the installation process is complete, you will have a partition named "Ventoy" available on your USB drive. Copy your Windows ISO to this partition, and that's all you need to do. You may also want to check out a more extensive tutorial on creating a bootable Windows USB drive that includes other available tools.