I have a 16GB Toshiba USB thumb drive which has suddenly for no apparent reason become write protected. I was in the middle of copying some files over to it, when suddenly I got the message saying disk was write protected. I am unable to format it as I am told it is write protected too.
I have tried setting HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies to make it writable, and I have tried running diskpart to clear the read only, I have also tried runningmUSBfixer to reformat the drive. None of the above appear to have made any difference, my drive is still read only. There is no external switch to write protect the device. Any other ideas on how to restore writability?