I have tried everything I could think of, formatting the card, installing a game without it, removing it, restarting and then inserting it.
No matter what I try, the deck keeps setting it as the default drive.
I’m on stable release, latest update. Happens on both new OLED model and LCD.
I have the same issue. It’s frustrating because you think you’re installing to the hdd, but if you don’t catch it, it winds up on the SD card. I’ve had nothing but problems with the OLED model I have. Performance is strangely worse. Download speeds are about half of what I got on my previous LCD Deck… It’s really been a disappointment.
The problem with the SD card seems to affect all models of decks, not just the oled.
I also had very slow internet speed at the beginning (around 5Mb/s) but it went away after an hour and a restart. If you still have problems, try a factory reset in the system settings.