Edit EMMC from SD

Robinho710 · Published in 2016-7-7 05:06:11

Edited by Robinho710 at 2016-7-7 05:13

Hi all,

I own a OrangePi Plus2 H3 and I successfully installed ubuntu on it a few weeks ago.

Now I want to change something on the OS on the EMMC while booting from SD Card. Is that possible?
I can boot from sd but I can't find the emmc. It kind of looks like emmc doesn't show up if sd card is present.

Output of 'sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL'. 'sdb' is an external usb drive.

NAME       FSTYPE SIZE MOUNTPOINT LABEL
sdb                1.4T
└─sdb1    ext4    1.4T
mmcblk0          14.5G
├─mmcblk0p1 vfat    41M
└─mmcblk0p2 ext4    3.4G /

I just want to edit one file.
I hope anyone can help me with that. Thanks in advance!!

yh75847584 · Published in 2016-7-7 08:22:22

I met the same question few weeks ago and I re-edited one file few days ago. But I am not sure whether we are interested in the same one of in the same document, so I do not know it works in the same way.
I packaged some tools in a USB and use it as the external tool.

igorpec · Published in 2016-7-7 12:39:56

http://www.armbian.com/orange-pi-plus-2/

eMMC is working fine with our (supported / updated / fixed) images, while I am not so sure for those you find at official download.

Robinho710 · Published in 2016-7-7 15:53:52

So does anyone know how to do it with the official Ubuntu Image? How did you managed to do it using usb? I can't even find or mount the emmc.

shooreg · Published in 2016-7-7 19:30:01

Why not use Igor Pecovnik's images ? (http://www.orangepi.org/orangepi ... &extra=page%3D1)
They are somewhat lighter then official ones, but still if you need you can install missing from official repos.
To use EMMC with official image, I guess you need to build a new kernel with corresponding modules from linux-sunxi branch (that is a linux kernel community for Allwinner CPUs).
However, it is not that easy, and Igor has already done that.

Robinho710 · Published in 2016-7-7 20:15:18

I can't change the image. Is it possible with that image? I found the mmc settings in the script.bin binary which I converted to .fex and changed them with no effect. Is it possible to mount emmc using these fex config parameters?

shooreg · Published in 2016-7-8 18:02:44

I think you can try to use boot partition from images that support emmc. It might work since it contains emmc-aware kernel image.