HELP all my usb drives are readonly

  Dualshock Bolt 15:08 25 Feb 11
Locked

please help all my drives seem to be write protected
i am using my home PC and i plugged in a usb that i always use and tried to copy over a file and rename a folder but both times it came up with a write protection message
i tried doing the same on my back up usb but the same thing happened none of my usbs have protection switches on the outside and it didn't do this yesterday!

any replies would be much appreciated

  Fruit Bat /\0/\ 16:26 25 Feb 11

How to take ownership of a file
Note You must be logged on to the computer with an account that has administrative credentials.

To take ownership of a file, follow these steps: 1. Right-click the file that you want to take ownership of, and then click Properties.
2. Click the Security tab, and then click OK on the Security message (if one appears).
3. Click Advanced, and then click the Owner tab.
4. In the Name list, click Administrator, or click the Administrators group, and then click OK.

The administrator or the Administrators group now owns the file. To change the permissions on the files and folders under this folder, go to step 5.
5. Click Add.
6. In the Enter the object names to select (examples) list, type the user or group account that you want to give access to the file. For example, type Administrator.
7. Click OK.
8. In the Group or user names list, click the account that you want, and then select the check boxes of the permissions that you want to assign that user.
9. When you are finished assigning permissions, click OK.

Make sure the EVERYONE user has write privileges

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