First save the important data to the U disk, then open the "My Computer" interface, right-click the U-disk icon, and from the shortcut menu pop-up followed by the "format" command, open the U Disk Formatting dialog box;
In the File System Settings section of the dialog box, set the U disk partition format to "NTFS", and then select the "Enable Compression" option and click the "Start" button so that the U disk is formatted as an NTFS partition, and the capacity of the U disk is automatically expanded to around 150%.
Below, we can use NTFS partition-specific permissions to set the properties of the U disk encryption restrictions; Right-click the U disk icon, from the pop-up right-click menu, execute the Properties command, open the U disk property settings interface, click the "Security" tab in the interface, and in the corresponding label page to select and delete the Everyone account, next, click the "Add" button, will need to access the U disk user account to import in, those who do not import account users will not be entitled to access, use U disk.