booting from sd card upon power up

I have found an ubuntu image (for SDR), that I want to boot up directly from an sd card.
I have scoured the internet, and frankly, there is a lot of mis-information out there, re this.

I don’t want to have to push any buttons or anything like that, as the beagle bone black will be in an enclosure.

So, is just the mere act of putting in an sd card, make it automatically boot from it? Or is there more that has to be done. Prefferably, I would like to keep what is on the flash memory intact, so if I don’t have the sd card inserted, it will boot up normally from the flash.

And just exactly what is the boot order, while I am at it?

Thanks,
Jerry

Okay, let's start with what's on the eMMC:

cat /etc/dogtag

Next the "SDR" image what version/etc?

What do you currently see (over the usb-serial adapter) when you
currently try to boot the SDR image.

Regards,

I will get you the rest of the info today.

I got the ubuntu image from here:

http://www.kd0cq.com/2014/08/packed-full-beaglebone-black-img-file-rtl-sdr-gnuradio-gqrx-lots-more-on-ubuntu-14-04/

dogtag on the flash when I boot up is:

BeagleBoard.org BeagleBone Debian Image 2014-04-23

How should I now proceed? just put in the ubuntu SDR image sd card, and reboot?

dogtag on the flash when I boot up is:

BeagleBoard.org BeagleBone Debian Image 2014-04-23

Okay, that one will look for uEnv.txt in the first partition,
"uenvcmd=" would let your microSD take over from the eMMC..

How should I now proceed? just put in the ubuntu SDR image sd card, and
reboot?

Well, someone's going to need to do that at some point...

Then as previously asked...

What do you currently see (over the usb-serial adapter) when you
currently try to boot the SDR image.

Throw the log up on pastebin.com

Regards,

after I boot up the sd card, I cannot get into it via usb any longer. It just hangs.

booting up from flash : screen /dev/blahblah 115200 (no problem)
booting up from sd card: same as above (it just hangs, maybe its no longer 115200?)

which, I think means that it is booting off the sd card.

I have not been able to login via usb or with ssh (because I don’t know the password, all of my guesses are incorrect at this point).
I have asked the author for the username/password pair. Hope to hear back soon.

So I think the booting part is working.

Thanks (from a BBB newbie),

Jerry

which, I think means that it is booting off the sd card.

I have not been able to login via usb or with ssh (because I don't know the
password, all of my guesses are incorrect at this point).
I have asked the author for the username/password pair. Hope to hear back
soon.

From the website:

Unbuntu 14.04 w/ LXDE desktop
Login info: user: ubuntu passwd: Temppwd (capital T)
Downloads 1.96GB : BBB_Ubuntu14.04_SDR-KD0CQ_v1.tgz

So I think the booting part is working.

Thanks (from a BBB newbie),

Regards,

yeah, (sheepishly), figured it out. I wasn’t putting in the Capital T.

Thanks for your responses.

Jerry