How to Use a USB Flash Drive on a School Chromebook

Chromebooks read USB flash drives without any setup, but school-managed devices can have external storage turned off by the administrator. Plug the drive in, look for it in the Files app, and if nothing shows up, check the policy page before blaming the drive.

Plug in the drive

Insert the flash drive into a USB port. If the Chromebook only has USB-C ports and the drive has a USB-A plug, you need an adapter. A notification usually appears saying the drive was detected.

Open the Files app

Click the Launcher (the circle in the bottom left corner) and open Files. The drive appears in the left sidebar under its own name, usually the brand name or a label like "USB Drive".

Copy files to or from it

Drag files from My files or Downloads onto the drive in the sidebar. Or select the files, press Ctrl+C, open the drive, and press Ctrl+V. Right-clicking also offers Copy and Paste. To open a file from the drive, double-click it.

Eject before unplugging

Click the eject icon next to the drive's name in the sidebar, wait for it to disappear from the list, then pull the drive out. Unplugging without ejecting can corrupt files that were still being written.

Check whether the school has blocked USB storage

If the drive never appears in Files, the administrator may have disabled external storage. Open a new browser tab, go to chrome://policy, and search the page for ExternalStorageDisabled. If it is listed with the value true, USB drives will not work on this device. ExternalStorageReadOnly means you can open files from the drive but not save to it. In either case, the workaround is Google Drive: save the file to your school Drive on the Chromebook and download it on another computer at home, or ask the teacher for another way to hand in the work.

If the drive works on other computers but not here. Check the format. exFAT and FAT32 drives work on Chromebooks, Windows, and Mac. NTFS drives usually work too, but if you can read from the drive and not write to it, reformat it as exFAT on a Windows or Mac computer, which erases everything on it.

On personal accounts. Many schools block signing in to a personal Google account on school devices, so use the school Drive. Do not try to bypass a storage policy. The school set it on purpose, and it cannot be changed from the device.