You can see the files in the backup folder but this files are not suppose to be edited or anything
a Backup means the files are saved to restore in the event of failure of the computer.
Looks like you don’t want a backup and want a storage drive to free up space on the internal drive for the PC
In that situation drag and drop the files to the drive and then you’ll have easy access to them when you need to edit and work with those files
backed up files are not suppose to be edited since the backup will become corrupted having files updated on the backup drive but not updated on the computer
