Your USB drive could not appear in File Explorer if Windows didn't give it a letter for some reason or if its file system was damaged.

Method 2: Format USB to FAT32 via Disk Management Once the drive has finished formatting, click OK to complete the procedure. Note: Please back up your important files in the USB flash drive before proceeding with the Format. Press the Start button and select This PC to open the File Explorer. Connect the USB drive or the desired external hard drive to the Windows 10 computer. Remember that the USB drive's prior data will be deleted during the formatting procedure. This approach can only be used to change a USB disk in FAT32 format if it is less than 32GB. Method 1: Format USB to FAT32 via File Explorer There are typically different ways for users to format USB to FAT32 on Windows 10/11, which has the most excellent compatibility compared to other file systems. How To Format USB (Smaller than 32GB) to FAT32 on Window 10/11 There is no 'FAT32' option when changing a USB disk larger than 32GB in Windows Explorer. In addition, FAT32 can only be used to format drives between 2GB and 32GB in size according to the manufacturer's standards, which is why native Windows programs have the same restriction. First and foremost, you must convert FAT32 to NTFS or exFAT if you utilize a single file larger than 4GB. FAT32 also has certain drawbacks or, to put it another way, constraints.

Either simply copy and paste them into the computer, or use a data backup software.

Don't forget to back up important files on the USB drive.

Format usb drive to fat32 on windows 10