Today I wanted to save data on my SD card, but the lock (this grey thing you pull down to make the card write protected) was missing.
So i googled and found out that there is a button in the card reader. if open, the Lock pushes that button. but if its not pushed the card is protected, so i just have to push the button.
here i show you how to get your card to push that button.
SD with missing lock
straw (dry grass, etc)
Step 1: Cover SD with alu and tape
then put it on SD like in pic 2.