For now, MMCCAM doesn't scan cards on boot. This means that scanning has to be done manually
# For SD card slot
camcontrol rescan 0:0:0
# For SDIO WiFi
camcontrol rescan 1:0:0
# For internal eMMC
camcontrol rescan 2:0:0
The result should be like this (NanoPi M1+):
```
root@fbsd-arm-host:~ # camcontrol devlist
<SDHC SD16G 3.0 SN 7CA5C349 MFG 03/2016 > at scbus0 target 0 lun 0 (sdda0,pass1)
<SDIO card> at scbus1 target 0 lun 0 (pass0)
<MMCHC 8WPD3R 0.0 SN 53CFF01B MFG 10/200> at scbus2 target 0 lun 0 (sdda1,pass2)
```