TS try mo to na steps:
1. LOOK FOR SWITCHES. There are some USB flash drives/micro SD cards that have switches that will allow you to prevent any unwanted changes. Check your storage medium for any switches.
2. PERMISSIONS MUST BE CHECK. To check permissions, follow the steps below:
Open "My Computer"
Right-click on your USB drive then select Properties
In Properties menu, select "Security" tab
Check the FULL checkbox option or WRITE if only for write permissions.
3. EDIT THE REGISTRY. FIND REGISTRY KEY StorageDevicesPolicies AND MODIFY IT.
Press Win key + R and type regedit
Navigate on the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies
Find the WriteProtect in the right pane, double-click on it, set its value to 0(Value Data box) then press OK
Exit registry and reboot your PC
If StorageDevicePolicies key does not exist, you need to create it manually. To do this:
Right-click HKEY_LOCAL_MACHINE\SYSTEM\CurrrentControlSet\Control\ and select New -> Key.
Type the name StorageDevicePolicies
Click on the new registry key that you've created, StorageDevicePolicies and on the right pane right-click, select New > DWORD and give it the name WriteProtect.
Set the value to 0 after double-clicking on it
4. DISKPART COMMAND IN COMMAND PROMPT.
Press Win key + R and type cmd
Type "diskpart" without quotes then hit enter
Type "list dir" without quotes then hit enter
Type "select disk # " without quotes (locate the number of your flash drive) then hit enter
Type "attributes disk clear readonly" without quotes
5. FORMAT DISK IN A DIFFERENT WAY.
Format using a command prompt:
Press Win key + R and type cmd
type "format F:" without quotes (NOTE: F represents the drive letter. Replace it with your corresponding drive letter)
Windows 7 users (another way on formatting also called low-level formatting)
Download this
tool to allow low-level format
After completing the low level format, you need to create a partition for your hard drive
Press Win key + R then type diskmgmt.msc
Select the pen drive in the disk management window, right-click on it then FORMAT
Click OK and close the dialog. You will now be able to use your drives.