Cannot access SD card when booting from EMMC

amirams

I've installed Armbian on my new Orange Pi PC Plus and moved it to EMMS as described here.

Everything works fine, except for the SD card: I cannot see the card reader (with or without an empty or non-empty card inserted) when I boot from EMMC (I boot of course without the card inserted).

the output of

ls /dev/sd*

shows nothing:

ls: cannot access /dev/sd*: No such file or directory

Other commands (e.g. sudo blkid) also don't show the card reader. I do have mmcblk0 and its partitions, which points to the EMMC.

If on the other hand I try to boot from the card reader (e.g. with a card containing openelec) it works fine, which proves that there are no technical issues with the card reader itself.

What should I to to be able to recognize the card reader from my Armbian?

Thanks

admin

Hi, can the USB port work normally?

amirams

Yes, all three standard USB ports work normally (I didn't test the OTG port).

dx.l

HellO!
I have the same problem.

My system is booting from internal memory. With a clean sd card installed  - it's not boot at all.
After boot from eMMC - sd cars is not accessible when I put it into the holder. It'is not accessible from the system.
Dmesg shows me nothing, even after: udevadm trigger.

How to solved the problem? I just wanna have more space for files and backups.

My board is Orange pi plus 2.

dx.l

Ok. the solution was fund here:
https://forum.armbian.com/index. ... re-is-16ghz-and-sd/

1. bin2fex script.bin.
2. edit section [mmc0_para] and change sdc_detmode value to "1" from "3".
3. fex2bin
4. reboot

Now the sd card is accessible form the OS.