But My SanDisk Ultra USB Flash Drive 256GB, Has 5 Year Warranty, That Per The Web-Sites Current Waranty Info For This Product.:  I Just Got Two Of These And During The Time I Was Reading The Readme Files, Then Going To Support Web-Site I Looked At The Forum And Notes On The Write Protect Issue, And Thought About My Seagate 1.5 TB Externable HDD, That I Have The Same Write Protect Issue. But When I Conntacted Seagate about This Write Protect Issue Thay Said That This Is Usualy Caused When Its Connected Up To A Mac Computer And The Drive Is Formated As NTFS. That It, But I WAS Connecting It Up To My Windows Computer Running WinDOWs 7 Pro SP1 OS. Also This Seagate External HDD Has A eSATA Connector And That What I Was Using At the Time Of the Write Protect Issue. I Was Trying To Deleate All The Files On It So I Could Use It As A Backup Drive For My Dusl Boot Setup Of Windows 7 Pro SP1 And Windows 10 Pro. Anyway I Am Reading All The Post About What Other have Tryed On Fixing The Write Protect Issues. I Hope To Be Able To Fix My Seagate HDD External Drive By Using The Posted Fix Trys. Marcus. 

Thanks for your seggestion.

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@arorao wrote:

 have problem with my SANDISK,USB FLASH-DRIVE(16GB) that whenever i insert or plug it with some computer and try to write(CUT,COPY etc) it shows an error that THE DISK IS WRITE PROTECTED…can any one please suggest that why it is displaying such error…at first i think that this is problem with my pc but know the essue is same for all computer…

can any help me to resolve this issue???


My Computer config–windows7(64-bit

This error implies the drive has a hardware error and needs to be replaced.  These two links may help.—how-to-fix-write-protected-disks




Plz help me I lose my data on the 8 gb flash say structure corrupted

Structure Corrupted is not the same as Write Protected.  Start your own thread.

And try running CHKDSK on the drive.

I bought a sandisk usb drive today and put some documents in it, and now it is write protected. How can I return it with my private documents?! 

See if the links posted 4 posts above your posting help.…—how-to-fix-write-protected-disks

Same here,. i’ll guess i wont return it, glad i bought two on black friday.  will wait for a solution,. 

Use GPARTED in Linux. Delete the partition table and then format it using whichever filesystem you prefer. Linux gives no craps.

After following the whole process, I have not seen StorageDevicePolicies after “Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control”  so, what should I do to format my 8 GB SanDisk Pen Drive?

Here is how to Remove The Write Protection From A USB Drive

1- Press the WIN+R keys together to launch the Run dialog box. When it opens up, type in regedit and hit the enter key.

2- As next, you need to navigate to the following path as shown in the screenshot given below:

HKEY_LOCAL_MACHINE -> SYSTEM -> CurrentControlSet -> Control

3- Now, under the Control key, you need to look for a key named StorageDevicePolicies.

If there is one already, you can go straight away to step 5.

Else, right click on the key Control, click on New and then on Key.

4- Name the newly created key as StorageDevicePolicies.

5- Click on the newly created StorageDevicePolicies key in the left window pane, and in the right window pane, you need to create a new 32-bit DWORD value. For that, right click anywhere on an empty space in the right window pane, click on New, and then on DWORD (32-bit) value.

6- Give the newly created DWORD value the name WriteProtect and double click on it to edit its value data. To disable the write protection from the USB drive, set the value in the Value data field to 0.


First Solution: Sometimes virus infection corrupt USB flash drive and makes them locked and write protected.

So, it is suggested that you must first scan your USB flash drive for virus.

Second Solution: Some USB flash drives come with mechanical switch on them that put them into Write Protected mode.

There can be very small slider switch. And if this is the case, then you must move the switch to unlock position.

The above solution is brought to you by:

if you will still face this problem try this video method to solve your problem

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I had just such a USB hard disk which had been formatted as NTFS and used as a Windows 8 ToGo! boot disk. I could not copy any files to it or format it under Windows 7 or wipe it using RMPrepUSB - every time I tried I got a ‘Write-Protect’ error.

To format pen drive it is must to remove write protection. There are various ways to remove write protection from pen drive but i am going to tell a way by using command prompt. I am leaving a link here, it will defintely help you to remove write protection.

hi man 

i had the same probleme 

and this worked with me 

just install the reg file to disable write protect

good luck

Please read this article and get your perfect solution or remove write protection from your USB drive windows. I also use these methods it is very helpful for me. To go this link click here: