Hello,

I was happily tinkering with Beaglebone Blue until yesterday but now I 
cannot boot it from the eMMC. What I did was very simple. Trying out the 
lastest Debian image.

1- Downloaded the last Debian image (version 9.1). Using WinDisk32Imager I 
wrote the image to a 4 GB microSD card.
2- Inserted the microSD card and powered the Beaglebone Blue, while 
pressing the BOOT button, but just until LEDs start blinking. About 2 to 3 
seconds pressing the button. I believe that nowadays it is not necessary to 
do this to boot from the microSD card.
3- It took some time but eventually it booted to the new OS.
Nothing more than the usual stuff.
4- Did nothing special with it. Just confirmed that it was the Debian 9.1 
version I was running and not the one from emMC.
5- Shutted down BeagleBone Blue. It was very late so I did nothing else.

Next day I removed the microSD card, to continue with my experiences, but 
the Beaglebone Blue does not boot from the eMMC. It doesn't even appear as 
a remote disk to the Operating System (Windows 7, by the way). All it does 
is blink one of the USRx LEDs, and with a pattern that resembles heart 
beat. 

What has happened? Did the eMMC become corrupted in any way? For some 
reason some file was modified in a way that now I can only boot from a 
microSD card (some bug with the new Debian 9.1 release)? Something else?

Please advise me.
Thanks.

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