You can download the UNetbootin executable directly from the official UNetbootin website .
: At the bottom, ensure the "Type" is set to USB Drive and select the correct drive letter (e.g., D: on Windows or /dev/sdb1 on Linux).
: Instead of using the "Distribution" menu, click the three dots (...) button to browse for your downloaded Debian ISO.
The image is usually recommended if you have a stable internet connection, as it is a small file that downloads the rest of the OS during installation. 3. Creating the Bootable USB