Short Answer 
To transfer files to a USB drive, first connect the drive to your computer and wait for it to be recognized. Then, open File Explorer (Windows) or Finder (Mac), locate your USB drive, copy the desired files, and paste them into the root directory of the USB drive.
Step 1: Connect Your USB Drive
Begin by plugging your USB drive into your computer. It’s essential to wait a moment for your system to recognize and detect the drive before proceeding. This step is crucial as it ensures that your computer can communicate with the USB drive for file transfers.
Step 2: Open File Explorer or Finder
Next, open File Explorer if you are using Windows or Finder on a Mac. You need to locate your USB drive from the list of available drives. This is where all files you want to add will be stored. Browse through your files to find the items that you wish to copy to the root directory of the USB drive.
Step 3: Copy and Paste Files
After locating the files, highlight them, right-click, and choose “Copy.” Now navigate back to the USB drive’s root directory (usually represented by a drive letter like ‚ÄöAuZ:‚ÄöAu). Right-click in an empty area and select ‚ÄöAuPaste‚ÄöAu to transfer your files. This process adds the selected files directly into the main directory of your USB drive.