If your USB flash drive is not copying files, format your file type to NTFS. However, you may also need to gain administrator permission to fix the issue.

On Windows 11, you have at least two tools to download the installation files onto a USB flash drive and make it bootable.

If you need to save files to a couple of cloud services, or if you want to save files to the cloud, your PC, and a flash drive, you could end up clicking around quite a bit to save your files.