[wanderson]

This seems like the right forum topic to discuss this issue. If not, please let me know where to redirect.

PLATFORMS:
Calibre 7.24.0 on Windows 11 / Dell Inspiron laptop
Android 13 on TCL NxtPaper 11 tablet with 128G internal & 128G SD card

GOAL:
Transfer books from Windows Calibre library to tablet's SD card

RESULTS:
Books are consistently put in internal storage, not SD card.

CONFIGURATION:

I'm enabling MTP transfer when the tablet is plugged in; this evidently seems to work, as the device information seen by Calibre sees both storage spaces:

Spoiler:

{'device_version': '1.0',
 'friendly_name': 'TCL NXTPAPER 11',
 'has_bulk_properties': True,
 'has_storage': True,
 'manufacturer_name': 'TCL',
 'model_name': 'TCL NXTPAPER 11',
 'protocol': 'MTP: 1.00',
 'serial_number': 'E598DB9E0D2F9BCDD8844B50D861FDD2',
 'storage': [{'capacity': 128145522688,
              'capacity_objects': 0,
              'description': 'SD card',
              'filesystem': 'Generic hierarchical',
              'free_objects': 1073741824,
              'free_space': 128142540800,
              'id': 's10001',
              'name': 'SD card',
              'rw': True,
              'type': 'removable_ram'},
             {'capacity': 113995907072,
              'capacity_objects': 0,
              'description': 'Internal shared storage',
              'filesystem': 'Generic hierarchical',
              'free_objects': 1073741824,
              'free_space': 98783334400,
              'id': 's20001',
              'name': 'Internal shared storage',
              'rw': True,
              'type': 'fixed_ram'}],
 'type': 'unknown'}

I have configured the device to use the directory "/Books" on the SD card (a pre-existing directory). However, my book transfers always go to the root of the internal storage, not the SD card. The transfer creates the internal storage directory "/Books", which did not previously exist. Interestingly, the subdirectories for the transfer are built correctly, per my device configuration template.

So, the question seems to be, "What am I doing wrong?"

All help is welcome,

Wanderson