Unable to Flash the internal eMMC of BBB Rev C

[Shyam D]

Board: Beagle Bone Black RevC

i have downloaded the latest linux debain image and written the image to SD card via win32 image writer

now my problem is

when i press the boot button during powerup the booting happens from SD and further all leds lit at a time then they all go off and leds keep on glowing not following any pattern and i am able to login via ssh

i searched many guides in which they explain the same above process even to flash the on board eMMC, i was not able to see the current flashing status of write over eMMC (some said i can see it over UART(J2) but i dont have one now :( )

how to differentiate whether i am booted through SD / currently flashing the eMMC (are both independent ? / or the OS done in background ?)

is there any special led pattern i can observe during the process of eMMC flashing ?

i tried some different stuff also, like after logging in via SSH i just brought the image.xz in to my /tmp folder of board and did the below

#dont know what is my eMMC block 0 or 1 :( , dont know will it damage or not
$ xz the_image_downloaded.img.xz  > /dev/mmcblk0

[Robert Nelson]

On Tue, Mar 24, 2015 at 11:48 PM, Shyam D <shyam.s...@gmail.com> wrote:
>> Board: Beagle Bone Black RevC
>
>
> i have downloaded the latest linux debain image and written the image to SD
> card via win32 image writer
>
> now my problem is
>
> when i press the boot button during powerup the booting happens from SD and
> further all leds lit at a time then they all go off and leds keep on glowing
> not following any pattern and i am able to login via ssh

....

and the name of the "file" you flashed to the eMMC was?

"unless" it specifically was called "eMMC-flasher" it's only going to
run standalone on the microSD. To change it to "flash" the eMMC read:

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Flashing_eMMC

We had "5" different images released for "2015-03-01" each one is
identified by it's file name

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#2015-03-01

Regards,
--
Robert Nelson
https://rcn-ee.com/

[Shyam D]

bone-debian-7.8-lxde-4gb-armhf-2015-03-01-4gb.img.xz  was the image which i have put to SD 

[Robert Nelson]

On Wed, Mar 25, 2015 at 12:03 AM, Shyam D <shyam.s...@gmail.com> wrote:
> bone-debian-7.8-lxde-4gb-armhf-2015-03-01-4gb.img.xz was the image which i
> have put to SD

Then the image was working perfectly as it was required.

Issue closed, read the FAQ to convert to flasher... ;)

[Shyam D]

Flasher: (lxde)

Flasher: (console)

what is the difference between the both , by the way i have started to download the first

[Shyam D]

Please don't close the issue, i did not understand your reply :) , please answer my questions 

[Upol Ryskulova]

Hello Shyyam,

I don't know exact way how to convert to flasher from standalone. But method I followed was download eMMC-flasher image from here. And follow the same steps you did for normal standalone image md5sum, unxz and write it to microSD. It will solve your problem.

Regards,

Upol

[Robert Nelson]

On Wed, Mar 25, 2015 at 12:08 AM, Shyam D <shyam.s...@gmail.com> wrote:
> Flasher: (lxde)
>
> Flasher: (console)
>
> what is the difference between the both , by the way i have started to
> download the first

Well one is the full "lxde" desktop and the other is a minimal "console"..

[Robert Nelson]

On Wed, Mar 25, 2015 at 12:19 AM, Shyam D <shyam.s...@gmail.com> wrote:
> Please don't close the issue, i did not understand your reply :) , please
> answer my questions

It's closed... The reason it wasn't auto flashing is you didn't dd the
"eMMC-flasher" image. Thus there isn't anything to "fix"..

I had also sent you a link to "convert" your already flashed
"no-flasher" to a "flasher"..

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Flashing_eMMC

[Shyam D]

Im Done thanks very much 

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[zeljk...@gmail.com]

I'm having the same "problem" with BBB rev C & BBG WiFi and I also came to conclusion that something was not explained right, or that SW flashing package was not "packed" well for novice users. 

And I just need to say that answer as such is very immature, specially giving the amount of interest that is being generated towards the growing audience. 

So, I'll ask again:

How do find uEnv.txt? Is it on the uSD or should I terminal to the BBB?

If this is on the uSD, how do I access it on OS X or W based OS?

And the last thing, I'm newbie too. So don't be mad at me for asking your help. 

[Dennis Lee Bieber]

On Wed, 14 Sep 2016 01:56:38 -0700 (PDT),
zeljk...@gmail.com declaimed the following:

>
>So, I'll ask again:
>How do find uEnv.txt? Is it on the uSD or should I terminal to the BBB?
>If this is on the uSD, how do I access it on OS X or W based OS?
>

In order:

Exactly where
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Flashing_eMMC states:
/boot/uEnv.txt.

Yes and yes.

Maybe OS-X but not Windows.


The current images (in my experience) no longer include a separate
FAT-type partition for the initial boot, so Windows doesn't see anything on
the card that it can mount; OS-X might understand the partition format
(ext3?) so could navigate to the location.

Easiest route... Boot with the SD card in place, use a terminal to
navigate and edit, then reboot and watch it flash... Then remove the SD
card and reboot using eMMC with new image.

I usually then reburn the SD card with the non-edited image to make a
stand-alone booter -- which I expand to the full 8GB of my cards. I need to
experiment, but I think the last time I tried, booting off eMMC and /then/
inserting the SD card gave me a mounted partition that I could have used to
reverse the edits -- instead of reburning the SD card. Think I've also seen
that booting with the SD card mounts the eMMC also, so I could copy
home-directory config files from one to the other. When I tried last year,
the SD card wasn't auto-mounted, and I'm not "Linux" enough to figure out
how to access it.
--
Wulfraed Dennis Lee Bieber AF6VN
wlf...@ix.netcom.com HTTP://wlfraed.home.netcom.com/