PBP does not start from postmarket OS image burnt to sd card

[zkajdan]

Hi,

I have burnt the latest stable PBP image to an sd card, but after insertion and booting the display stays black (even though the light is on).

The output of lsblk (on my laptop) looks like

```
mmcblk0                                      179:0    0  29.5G  0 disk 
├─mmcblk0p1                                  179:1    0  228M  0 part 
└─mmcblk0p2                                  179:2    0  4.1G  0 part  /run/media/key/pmOS_root
```

which could be a problem maybe - there is no boot partition on mmcblk0p1 (I remember there was when recently I had flashed a manjaro image...)?

BTW for burning to sd I used the standard command,

```
dd if=some.img of=/dev/mmcblk0 bs=4M status=progress

```

It would be awesome if someone could help!! Thanks!

[mikehenson]

Hi,
I have burnt the latest stable PBP image to an sd card, but after insertion and booting the display stays black (even though the light is on).

Do you have Tow-Boot loaded on the SPI?

Here is my screen when I turn it ON.

[zkajdan]

Hi,
I have burnt the latest stable PBP image to an sd card, but after insertion and booting the display stays black (even though the light is on).

Do you have Tow-Boot loaded on the SPI?

Here is my screen when I turn it ON.

Thanks for the reply @mikehenson !

When I turn it on (without SD card inserted) the screen remains completely dark...
This never happened before and I have no idea why it does...

When the PBP came, it had manjaro installed, which broke after an upgrade... I burnt a fresh version of Manjaro on the sd, booted from sd, and before I could do anything  to the emmc I had the network-couldn't-connect problem from the other thread... and then I tried to install postmarket OS from sd... 

Now I have the screen remaining dark whether I boot from SD or without...

BTW I never changed the boot order - in the wiki they write that to boot from sd, you have to perform some manual actions, but in fact I didn't have to, that time I booted Manjaro from sd...

Do you have an idea what I could do? Thanks again!!

[mikehenson]

Do you have an idea what I could do? Thanks again!!

I think you need to get Tow-Boot on the SPI.

I am not sure pine64 uses the wiki anymore, I think they moved everything to "documentation"

From the RK3399_boot_sequence

1. loading from NOR flash on SPI1
   
2. loading from NAND flash on SPI1
   
3. loading from eMMC
   
4. loading from SD on the SDMMC controller
   
5. bringing up the OTG0 USB controller in device mode and accepting control transfers to load programs
   

The eMMC may have an issue booting. You may need to Disable the eMMC so you can boot off the SD. Once booted off the SD, I personnally would try to get Tow-Boot on the SPI.

[zkajdan]

Do you have an idea what I could do? Thanks again!!

I think you need to get Tow-Boot on the SPI.

I am not sure pine64 uses the wiki anymore, I think they moved everything to "documentation"

From the RK3399_boot_sequence

1. loading from NOR flash on SPI1
   
2. loading from NAND flash on SPI1
   
3. loading from eMMC
   
4. loading from SD on the SDMMC controller
   
5. bringing up the OTG0 USB controller in device mode and accepting control transfers to load programs
   

The eMMC may have an issue booting. You may need to Disable the eMMC so you can boot off the SD. Once booted off the SD, I personnally would try to get Tow-Boot on the SPI.

Thank you @mikehenson !! That's good to know about the documentation!
I don't have any time today, but I'll try to do as you said tomorrow!