Solved! when formatting SD card to "internal storage" you won't be able to remove it and put in another phone or computer where it wil

[legsandglutes]

for those new to Android, could you indicated the number too when calling operating system by name, ie Marshmellow? What number is this? n the phone it doesn't typically give the name, just the version number. So can be confusing if the version is not specified along with the name.

 

[webworkings]

Marshmallow is 6.0, Nougat is 7.0, Oreo is 8.0.

Those are the versions of Android that support making an SD card set as "Internal" storage. That said, many manufacturers have also changed the versions that are on their devices so that you cannot make said change.

And, actually, whenever I personally share instructions about making the change, I include the info about it being encoded now. Meaning not only can it not be read by any other device, but when it makes the change it will wipe anything that was on the card before you did this.

Android Versions.... https/en.wikipedia.org/wiki/Android_version_history