Picture of Remove the write protection on a Micro SD.
When I got my phone I got it for the mp3 player. What I didn't know is that they expected me to buy a $30 connector cable. I tried to be the smart consumer and just bought a Micro SD card with an adapter. I plugged that bad boy into my computer only to find out that it was write protected. I figured out the painfully obvious way to unlock it.

Step 1: Adapter

Picture of Adapter
The adapter is the size of a normal SD. Plug the micro into the bottom.
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Mpilo9 days ago
pious1231 month ago

Thanks it worked Fine

For SD Card

saint19561 month ago

So I read through all these options and quite frankly none of them worked. So as a last resort I tried a LLF (with HDD Low Level Format Tool Free) and it worked. After that I formatted it again with regular windows format and problem solved. Hope it works for you. Notice!! Low Level format should be the last option on your list. YOU MUST NOT INTERRUPT THE PROCESS. IT NEEDS TO FINISH.

carmlee1 month ago
iragersh1 month ago

I got a 32gb gift SD micro card. The micro card worked in a phone, but would not be written in a computer with the adapter. I suspected the adapter and tried all recommendations but the one that worked was blowing into the adapter with an air can. Second time.

AmitB51 month ago
JyotiY1 month ago
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ManeeshC12 months ago
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GovtJ2 months ago
webpdq2 months ago

The adapter that came with my micro sd card write protects the card. Luckily, I had another adapter so I put the sd in that and all was solved. So easy fix, try an alternate adapter before trying anything else.

Hello, this is really a fantastic blog post thanks


gammatron7 years ago
If I remember correctly, the lock switch is the write protect, and not really to hold it in. Not the clearest label they could have picked, eh?


Funpakmaza4 months ago




dcntrahul4206 months ago
jglowzinski6 months ago

Well, after finally getting a hold of Nintendo, and being told I can downoad the stuff I purchased, on my NEW 3DS XL, in 5 days, I tried the memory card I got. It is a sandisk, 64 gig. It says it can not recognize it. I put the 4gig one in, that came with the system. Works right away. I looked on Nintendos site, I see 32 gig as the largest they have as working. Is that correct?

jglowzinski6 months ago

Well, after finally getting a hold of Nintendo, and being told I can downoad the stuff I purchased, on my NEW 3DS XL, in 5 days, I tried the memory card I got. It is a sandisk, 64 gig. It says it can not recognize it. I put the 4gig one in, that came with the system. Works right away. I looked on Nintendos site, I see 32 gig as the largest they have as working. Is that correct?

tut tam1 year ago

After reading this, I decided that I had to clarify some of those commentaries. There is a saying that goes like this: "Little knowledge is worse than not knowledge". When you do not know the usage of a button, it is better to shut up than to invent one for it. The lock on the adapter is to lock it against "unintended writing/deleting" - THAT IS NOT TO LOCK IT PHYSICALLY INTO PLACE. It will not get lose, so you DO NOT NEED hope it stays. It will stay. The adapter was made for that use. One more thing, what kind of voodoo is this "blow into the adapter"? What are the magical words you have to say after that. Real non-sense.

The micro SD has no protection against writing/deleting on its own, the ONLY WAY to achieve that is when it is inserted in the adapter and the lock is activated. So make sure that you do not accidentally delete your files when using the micro SD alone in the player/camera or else. Hope it is understood now.

RobertC13 tut tam6 months ago

BRAVO....you are correct !!!!

kalpeshp17 months ago

Nice one, but there are many more ways to remove write protection like making changes in system registry, using diskpart utility, antivirus and formatting using cmd for complete process visit, Definitely atleast one of among these will help you..


Shaswat497 months ago

actually removing write protection from micro sd card is really easy. you can fix it by some settings in your system registry options.

check how this for a reference how to remove write protection from sd card hope it helps :)

Hazette17 months ago

Wowie thanks a lot - it works! I thot I'm gonna spend another bundle for a 32GB!

Cheers from Singapore!

WolfThatIsBig7 months ago

Thx! I was worried my Micro SD was somehow damaged, now i succesfully formated it.

DeneenL8 months ago

Surprisingly the instructables worded for me too! To help clarify, one little puff of air works - just like you were blowing off the last of the dandelion seeds off the stem. :-)

simply you can do it just download unlocker 1.9.2 and after installation replace no action with delete then choose ok,

pls reply

Type in Run window regedit and click OK

After registry editor Open Goes to the

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Storage Device Policies\

In the Right Pane Double Click on Write Protect and Type in Value 1

Write Protection is Added

For Remove Write Protection

Double Click on Write Protect and Type in Value 0

write protection will be Removed

Or Simply Download the Application Called USB Write Protector

For Enable and Disable USB Port

from http://softlinklabs.com/2013/02/usb-write-protector.html

No. It doesnt have ANYTHING stating "Storage Device Policies"... Both this info and the main article are uninformed and VERY wrong. Find a real solution.

Then Use Diskpart Method

try this step guide to remove write protected from memory card


or Else you can also try this article to remove password from memory card


MartinA28 months ago

wtf, it really works!

barry.wind.38 months ago

I blew in the computer and it spit at me! Didn't work!

HarshS19 months ago

to me adapter kaha se layu

maine sd card formatter bhi download kiya lekin kuch ho nahi raha

mickotingting9 months ago

The blowing thing did work! many thanks to this.

Contented1 year ago

When I read "Using an air can (or just your lungs) blow into the adapter" I thought it was the craziest thing I had heard in a long while. The Micro SD card was in my mobile and I had to change to a different network operator. Connecting to the new provider a message stated the card was not working (and on reflection it probably never was) so I tried to format it with the phone. No joy. Then I tried to format it with my iMac but was informed the card was effectively dud. Next to a Windows laptop whence I was informed the card was write protected, regardless of the lock switch position.

I am now watching the green line move left to right as it is formatted, having blown into the adapter prior to inserting the Micro SD card and putting the adapter into the USB card adapter - Noah passed me his laptop and it does not have an SD card slot.

Those of you who have had problems with the switch and written comments below, next time just make sure the switch is in the unlocked position and then blow into the adapter Micro SD card slot, push in the Micro SD card and format the card!

I really do not believe I have just written all this; surely it's a lot of twaddle but the card has formatted! It really did work. Thank you so much for the advice.

A.J.G Contented10 months ago

I tried everything as well and nothing worked. Finally when no one was looking, so I wouldn't look like an idiot doing what we used to do with old NES games, I decided to try and blow into the card. Popped it back in and formatted it, and it worked!

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