I agree with this. Never format your cards outside the device.
Nikon_DonB wrote:
I don't know about "bulk" erasing memory cards. You can do that in a computer,.. But afterwards, before use, FIRST you should ALWAYS format the memory card in the device(camera, phone, tablet, computer, etc.) you will be using(writing data to) it in. Otherwise it can lead to errors and cause "read" issues.