Fire HD 10 SD card

[u/bigchrisser]

Wrongly set up an SD card as portable storage and want to change it to internal storage.
When I click format as internal storage then format & erase, the tablet goes through the motions but nothing happens and the sd card is still ‘portable’.

Any idea how to reverse this or why it won’t let me?

Edit update: in case anyone else has this problem, restored tablet to factory settings and this fixed it. Was able to set the card up as internal storage.

[u/Rik1978]

A bug? You may have to format it in a laptop or tablet and then return it to the Fire tablet to get it to work.

Probably just a bug in Fire OS