Windows 7 How remove write protection from usb drive


Senior Member
Jun 29, 2009
An external USB-connected HDD is write-protected after reformatting. How do I remove the write-protection?

I tried a tip I found on several sites where the suggested solution is to set the
value to zero, but that didn't do it.

Any suggestions?
When using the registry hack, you need to make sure you change the value on all "ControlSet" values, so if there is a ControlSet01, 02, etc, you need to change it on those as well and then reboot.
Yeah well, the funny thing is that before I got rid of the write-protection by way of DiskPart as per your suggestion, the StorageDevicePolicies value was set to zero...anyway the drive is OK on that count now.
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