@oyyodams I used two sd adapters and both did the same, the weird thing is that recalbox works fine, except that some configs doesn't save, that's why i find odd that i can't format the sd.

Well i have to buy another sd card
Thanks for your help!

Hello everyone! I have an issue with a micro SD card with recalbox 4.0 for rpi3, i want to delete it to make a fresh install, but Windows identifies the SD as Read Only, i checked the lock switch and it's unlocked, i tried using diskpart, using the command "attributes disc clear readonly" but it does nothing, tried with SD Formatter and nothing, so i don't know what to do.
Any help will be preciated
Thx!