10.0.0 Alpha-2 created 2 drives on Pico W

[b-blake]

CircuitPython version and board name

See AdaFruit Forum:
10.0.0 Alpha-2 created 2 drives

Adafruit CircuitPython 10.0.0-alpha.2 on 2025-04-04; Raspberry Pi Pico W with rp2040
Board ID:raspberry_pi_pico_w

Code/REPL

Any code.py

Behavior

10.0.0 Alpha-2 creates 2 drives on Pico W. One showing the files. The other waiting for the user to insert an SD card in the USB drive. The Pico W does not have an SD card slot.

Description

Extra SD drive

Additional information

No response

[dhalbert]

Originally reported here: https://forums.adafruit.com/viewtopic.php?t=217730.

@tannewt My impression is that this should not be happening on this board?

[tannewt]

Yup, seems like a bug.

[tannewt]

Looks like we condition the second drive on CIRCUITPY_SDCARDIO but not the stricter automounting test:

circuitpython/supervisor/shared/usb/usb_msc_flash.c

Lines 31 to 38 in 63815c5

	#if CIRCUITPY_SDCARDIO
	#include "shared-module/sdcardio/__init__.h"
	#define SDCARD_COUNT 1
	#define SDCARD_LUN (1 + SAVES_COUNT)
	#else
	#define SDCARD_COUNT 0
	#endif

I don't know why the drive letter would change.

[b-blake]

@tannewt,

The The drive letter may have been changed because I connected another MCU to the USB cable I was using to see what would happen. It came up as O:. When I reconnected the Alpha board to the same cable the drive letters were swapped. HTH

[b-blake]

Apparently the AF Feather RP2350 does it also.