Chapter in this post:
Question: I was sent an SD card with a used digital camera. Now I wanted to format the card on my computer and thus delete all existing photos of my previous owner. Unfortunately, I always get the message that the SD card is write-protected. How can I remove this protection?
Answer: The write protection for SD cards is actually already deactivated at the factory. I assume the previous owner turned on the protection for some reason and now it's giving you problems. Removing the write protection works with the memory Cards mechanically, i.e. you slide a small slider to the side and change whether the protection is active or inactive.
I once took a photo of one of my memory cards (normal SD card) so that you can see where to look for this slider. On my card, this is a small gray "button" that you slide to the left to activate the protection. On the sticker you can also see the arrow with the word "Lock" for the marking of the write protection.
By the way: if you want to buy an SD card for a camera that also supports 4K or Full HD video recordings with 60 or 120 fps who should use a memory card that is as fast as possible so that the data can be written to the card without dropouts. I can recommend the Sandisk Extreme Pro here. If you are unsure what all the abbreviations on the memory cards mean, then you can in this post Find out about the various UHS classes, SDHC, SDXC, V30, V60, V90 and other speed ratings.
Here is another photo with my current micro SD card that is in an adapter. If you use the SD card with the adapter, you can change the write protection. If you insert the microSD card directly into the device in question, there is no way to switch on write protection, as there is no slide switch.
Since there are still questions about when write protection is activated and when not, I would like to briefly explain again exactly when it is the case. If you hold the SD card in front of you so that you can read the writing as in the photo above, then the following applies:
I hope that now all readers can handle it and know how to turn off write protection. If you have any other improvements to the article, please let me know.
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.