Learn more.Sometimes, when users are going to delete files, they might fail to execute the process. This doesn't affect our editorial independence.
Note: We may earn a commission when you buy through links on our site, at no extra cost to you. But the good news is that storage is cheap, so you can replace a USB flash drive or SD card for little money. If it doesn't work, it's bad news and your stick or memory card is probably broken. Now open File Explorer, navigate to your drive and try to copy a file to it, or delete an existing one. format fs=fat32 (you can swap fat32 for ntfs if you only need to use the drive with Windows computers).select disk x (where x is the number of your non-working drive – use the capacity to work out which one it is).Now, at the prompt, type the following and press Enter after each command: If you have Windows 10, simply right-click on the Start button (bottom left of the screen) and choose Command Prompt (admin). To do this, right-click on Command Prompt in the Start menu and choose 'Run as administrator' from the menu that appears. Note: you may need to run cmd.exe with administrator privileges if you see an “access is denied” message. You can do this by searching for cmd.exe or 'Command Prompt' in the Start menu.
With your USB drive or memory card attached to your computer, launch a command prompt. Here are the microSD cards we recommend and the best USB drives.Īnd if you're just trying to get back lost data, read our step-by-step guide on how to recover deleted files for free. The only option in this case is to buy a new drive. There is a chance, though, that your card or drive may be corrupt or physically broken. If it turns out that this isn't the problem, there are three ways - below - that might get your drive up and running properly.Īlso, if you're having issues with an SD card, try using a different card reader if you have one available, or insert it into a different device.
You'll still be able to view files on a locked storage device like this (because it's basically in read-only mode) but you won't be able to delete them or add any new files. Sometimes these switches get moved to the locked position by accident, so have a look for a switch on your drive / card and make sure it isn't in the lock position. Some USB drives and SD cards (but not microSD) have physical switches which let you 'lock' the drive to stop any files being accidentally overwritten or wiped. If you're having trouble copying a file to a drive in Windows, can't delete files or are facing an action camera or dash cam that's refusing to work with a microSD card, it could be that the storage is write protected.
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