Question How do I format a microsd card beyond recovery the whole drive without connecting to pc?

[spiderman12345]

How do I format a microsd card beyond recovery the whole drive without connecting to pc? I am looking to run mutiple passes on the whole drive then copying back my stuff. i know theres free programs that will delete files or folders but I'm looking to wipe the whole thing like a format.

 

[VidJunky]

There are disk wipe apps at the Play Store. Some are offered as security or privacy. These apps will wipe SD cards and the last one I tried also wiped unused areas of the phone memory. They are Android apps so they only run on device, no external anything needed.

I mentioned it above but just to stress, these "wiper" apps only wipe free space, so if you files that haven't been properly deleted, deleted in this case only means that the area they occupy is free to be written over, based on your question I assume you already know how this works, but they won't erase anything. They just write 1s and 0s over all of the blank (free) areas and some will multiple times.

I wouldn't try any random apps from the internet, there are plenty of them at the Play Store that have been verified.