Being on Mrfixit2001 V1.4: Unable to boot from SD card

[vfr400racer]

This is a bit different from the other 'cant boot from sd' threads, I think. It seems other people's boot problems have been solved by updating to mrfixit's os version V1.4. But I am on this version. 
So this is what happened:
I dd'd mrfixit's debian image to the SD card. Synced multiple times. When shutting down and trying to boot from SD card, it didn't came up. I waited about 10 minutes, but nothing happened. After booting from eMMC and inserting the SD card, I could see that the root file system has been expanded to 64G. So I guess it started booting from SD card , but got stuck at some point. Any ideas what might be the problem here?

Hi!  Got the same problem.  Here's what you have to do to make it work:

In the file extlinux/extlinux.conf (in the boot partition of the SD card), for PINEBOOKPRO, change this:

Code:

root=PARTUUID=deedbeef-02

...to the real PARTUUID of the root on the SD card.  If you want to know what the PARTUUID is, just use:

Code:

sudo blkid

...and look for /dev/mmcblk0p2

Let me know if that worked for you like it did for me!

Cheers!

That's it!

But it was not straight forward. I started with a fresh image on the sd card. blkid shows a PARTUUID of "deedbeef-02"
When booting the image, the activity led started blinking for some time. Then the splash came on and then the system hang.
After booting from eMMC and doing a blkid, I could see, that the PARTUUID of the root partition has changed to a random string!
After putting this string into the extlinux.conf file, the pinebookpro booted from sd card.

Many thanks for your help!


PS: I tried the Bionic LXD image in the meantime. This one worked out of the box.