Before reading further, please read these related posts.

1> Enable write protection of USB Flash Drives.

2> Enable / Disable USB Removable Mass Storage Devices.

If your USB flash drive, pen drive, or external mass storage device is enabled, then you won’t be able to copy any data from your computer to USB drives. To revert back or disable Write protection on USB flash drives, then follow the instruction:

1> Click on “Start –> Run –> type regedit and hit Enter

2> Navigate to “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control

3> Create a new key and name it as StorageDevicePolicies

4> Select StorageDevicePolicies and create a new DWORD (32-bit) Value and name it as WriteProtect.

How to Disable Write Access to USB Hard Disk and Flash Key Drives

5> Set the value of WriteProtect to 0, this can be done by double clicking on WriteProtect.

Close registry editor and you are done. Sometimes you may have to boot the machine before the changes takes place. After WriteProtect is de-activated, users will able to write data from computer to any external storage device.

Related post:

1> Device media is write-protected problem.


  1. @brave angel
    I have an almost 100% chance of not responding if you reply back, so you know.

    If your user account is not a computer administrator or (even worse) your account/computer has certain restrictions on it, you will not be able to do certain tasks. (Any sane school would put restrictions on their computers… just an example…)