I suspect 64gb-stick was exFat thats what has been shown when i switched from win10s to xp with data loaded.
Must rectify my jusdement about German Platinum(Edeka/Marktkauf-brand) being robust which IT IS NOT.
they are long and when laptop hit the ground contacts may get damaged. have now a very short micro-SD-adapter on right side. wiull not drop again my ultrabooks. too much adventures with my two acers spin 1.-111- and swift 5. see other thread about dead keyboard/screen on swift 5-i7.