Unable to boot: blinking red light
#1
It seems that after modifying my fstab on manjaro to mount a swap partition, the pinebook pro is unable to boot.

The problem is, the mmc has boot priority over the sd-card, so the only way to boot from sd is to disable the mmc, which leaves me unable to access the fstab in question. Enabling the mmc after boot doesn't make it visible either.


However, now I think about it, when I was installing manjaro, it did boot from the sd-card without having to disable the mmc.
Can it be something else that's wrong? A corrupted u-boot install maybe?

Unfortunately, I don't have a working UART cable (I ordered the official one that runs on 5V), nor do I have a usb to mmc adapter.

Does anyone have any ideas to fix this?
  Reply
#2
What's installed on your eMMC? If this occurred after installing Manjaro to the eMMC, then you probably need to wipe it and reinstall. Easiest way to make that possible without the adapter or UART cable (at least in my opinion) would be to:

-Determine a working surface where you can take the bottom casing of PBP off.
-Place a soft material down by the edge of your surface, and lay the PBP keyboard tray onto it. The screen should be hanging off the edge, upside down. (I suggest doing this so that you don't have to worry about damaging the case by opening the lid w/o the bottom casing.)
-Remove the bottom casing (be sure to read the wiki for various precautions beforehand.)
-Flip the eMMC switch to OFF.
-Put the PBP on its side, so you can access the Power key.
-Insert your Manjaro installer SD card.
-Turn on the PBP.
-Once you see the PBP booting off of the SD, flip the eMMC switch back on.
-Use your Manjaro SD to either wipe the eMMC and shutdown (so you can put the PBP back together, boot back into the SD and try installing again.)
  Reply
#3
Manjaro is on the eMMC.

I tried enabling the eMMC both during boot (the Manjaro splash screen at the earliest) and after boot, but in either case it didn't show up in /dev.
If I enable it any earlier it starts giving the blinking red power light again.
  Reply
#4
So, I ended up buying the official USB to eMMC adapter from a nearby reseller.

And it seems I was unable to even mount the partition.
Fortunately, I was able to format it, so everything works again, although I need to reinstall my stuff again.

Thanks for the help!

EDIT:
Using the adapter it did show up in /dev on another computer, but I was unable to mount it due to a "bad superblock".
  Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Bionic image boot from SD mamboman777 9 143 Yesterday, 06:39 AM
Last Post: pete
  U-Boot with direct NVMe boot support for eMMC/SPI Flash pcm720 55 4,911 01-14-2020, 07:36 AM
Last Post: Arwen
  Can I boot system from nvme SSD? plumlis 6 500 01-12-2020, 04:47 PM
Last Post: bcnaz
  U-Boot on SPI flash - discussion Arwen 19 856 01-07-2020, 04:28 AM
Last Post: aaspectre
  PIneBook Pro - Boot from SD mcdomx 9 1,037 12-19-2019, 12:43 PM
Last Post: tophneal
  Cannot boot up after hours off tsago 5 330 12-12-2019, 01:35 PM
Last Post: Solra Bizna
  Help - PineBook Pro won't boot! ThisGeekTweets 5 421 11-20-2019, 05:50 PM
Last Post: zaius
  tutorial in the forum or on the wiki for boot/bios chris_heath 1 146 11-18-2019, 03:54 AM
Last Post: evilbunny
  Power led randomly blinking rrr 4 155 11-15-2019, 10:24 PM
Last Post: MrTester
  Boot menu? Solra Bizna 1 302 11-13-2019, 11:05 PM
Last Post: Der Geist der Maschine

Forum Jump:


Users browsing this thread: 1 Guest(s)