I tried using my sd card as internal storage on my Samsung Galaxy Tab S6 using this guide. But in the gui there is no option to "Migrate data", so I cannot do the last step.
It still worked in the sense that I can move apps to the SD card and they work. When I go to the Anroid system settings I get 150GB of 640GB used (i.e. total on both) and if I select the SD card I get the option to format as portable storage, so it's definitely recognized as adopted storage.
But the Samsung file manager now doesn't work anymore (keeps crashing immediately after launch, never displays) and the shared storage is still only the internal storage, i.e.
$ df -h Filesystem Size Used Avail Use% Mounted on /dev/root 5.8G 4.7G 1.1G 82% / tmpfs 2.4G 1.5M 2.4G 1% /dev tmpfs 2.4G 0 2.4G 0% /mnt tmpfs 2.4G 0 2.4G 0% /mnt/secure /dev/block/dm-3 477G 4.1G 473G 1% /mnt/expand/64d7c406-5e2c-40e8-9cb9-b96d10aff34a /dev/block/dm-1 969M 855M 113M 89% /product /dev/block/dm-2 1.2G 1.0G 206M 84% /vendor /dev/block/bootdevice/by-name/dsp 59M 28M 31M 48% /vendor/dsp /dev/block/bootdevice/by-name/cache 390M 8.7M 381M 3% /cache /dev/block/bootdevice/by-name/sec_efs 16M 1.0M 15M 7% /efs /dev/block/bootdevice/by-name/userdata 110G 94G 16G 86% /data /data/media 110G 94G 16G 86% /storage/emulated
And I can't access /mnt/expand/*, permission denied.
Any ideas how to fix, i.e. probably run the migrate step from terminal somehow?