Solution to remove Write Protection from USB Pen Drive
This seems to be the problem of most of us these days and some of our readers who wanted to know the methods how they can remove the Write Protected error from their USB drives like Pen Drives and memory cards.
What is Write Protected error and why it happens?
In the Write Protected error, we can’t write or copy any data in our flash drives and even can’t format the drive.
There are many reasons that cause this problem, let’s see solutions of them.
Solutions:
• First of all try to locate a small switch (if any, that you may have not noticed) at some place on the drive or memory card reader. This is the prime reason for this error. If there is one, switch it to the other side to turn the protection off.
• Yes I know this problem is also occurring these days without this switch but not to worry. Just download this helpful software from here and run it to execute a “low-level format” on the drive. This software is quite handy and may take few attempts to actually remove the error.
• The problem can also be caused by some virus activity so just get it scanned by some updated good anti virus which may solve your problem.
• BUT if none of the methods listed above solves your problem then your pen drive might have gone corrupted, so just get it replaced.
Hope any of the methods listed above solves your problem.
Update 1:
After the low level format, you may need to “Partition the drive“. Dont worry, partitioning a pen drive means allocating it its File System and Cluster Size that was lost after the Low Level Format.
For that:
- Run diskmgmt.msc in Run.
- In the disk management window, select the pen drive, right click on it and click on Format.
- Now choose the File System and Allocation Unit Size and do not check the boxes below.

Click OK and the drive will be reusable after this.
Update 2 (Better Solution):
Follow the steps in this post and just put the value 0 (zero) in step 5.
This will surely solve your problem now.
So, if you came this far reading the post, you should already be convinced that you need to grab my RSS feed, right?
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October 1st, 2008 at 9:28 am
when I run the formatter.exe, it gives an error message “Flash Drive not Found”.
October 1st, 2008 at 11:27 am
Yes it seems that there is some problem with that application, so i have updated the link again and the new software is working fine now.
Please follow the link again.
October 29th, 2008 at 8:58 pm
[...] should perform a Low Level Format on the disk that will surely erase everything stored on it. Read this to know [...]
November 22nd, 2008 at 9:37 pm
it is asking to partition the pen drive after the low level fomatting…
now how can i partition the pen drive..
plls help me out..!!
November 23rd, 2008 at 2:17 am
Try the update given in the post.
November 24th, 2008 at 5:39 pm
give solution
December 2nd, 2008 at 10:21 am
Yeah, none of those fixes work for the problem I’m experiencing. NO USB Storage devices work on my Laptop computer, at least the OS I primarily boot. Other OS’s (live CD) works fine, the drives work fine in other PCs but my Windows install suddenly started claiming all my USB drives are write protected.
December 13th, 2008 at 7:16 am
no this solution is not working for buffalo pendrive of 2gb
December 22nd, 2008 at 12:17 am
Guys do try the update 2, it is working.
January 2nd, 2009 at 3:20 am
I tryed to run the low level format command but got the reply: ” the device cannot be accessed because it is smaller than 65535 sectors.
January 2nd, 2009 at 5:18 pm
find different sector size supported by your disk then try that setting