The external storage media may be damaged. Solution: Check that the connection between the external storage device and the PS3 system is secure and that any connecting cables are not damaged. Try transferring data from a PC to the external storage device to ensure that it is functioning correctly. If your PC is also unable to write to the external storage device, the device may need to be replaced. If your PC is able to write to the external storage device, try transferring data from your PS3 system to another external storage device to ensure that your PS3 system is functioning correctly. If the problem persists, visit eu.playstation.com/contact to contact Customer Support. For more tips and hints on using your PlayStation system, visit our technical support forums at community.eu.playstation.com.