no MLO nor u-boot in Debian image ?

[Julien Charton]

Dear all,

I flashed my BBB using Debian 2015-03-01 image.
And to my surprise, there is no MLO nor u-boot.img in the FAT partition.

Even more surprising for me, the BBB can boot without problem and proudly displays :
    U-Boot SPL 2015.01-00001-gb2412df (Jan 29 2015 - 15:01:06)
on the console.

Where did the BBB take its MLO and uBoot files ???
Is there someting hidden in the mysterious mmcblk0boot0 / mmcblk0boot1 partitions ?


best regards

[Julien Charton]

OK
apparently MLO and uboot ar now hidden in mmcblk1boot0 and mmcblk1boot1
see

https://groups.google.com/forum/#!searchin/beagleboard/mmcblk1boot0|sort:date/beagleboard/GVk8OlWFR3s/0SUXZFsAIAAJ

[Robert Nelson]

On Jul 10, 2015 5:50 AM, "Julien Charton" <ju.ch...@gmail.com> wrote:
>
>
> OK
> apparently MLO and uboot ar now hidden in mmcblk1boot0 and mmcblk1boot1
> see

No, that's incorrect, they are stored in the master boot record (MBR), 1MB hole at the front of the drive mmcbklX.

mmcblk1boot0/mmcblk1boot1 are unused.

Regards,

[William Hermans]

Funny, I thought I answered this question yesterday, in an identical post . . .

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[Robert Nelson]

On Jul 10, 2015 11:50 AM, "William Hermans" <yyr...@gmail.com> wrote:
>
> Funny, I thought I answered this question yesterday, in an identical post . . .
>

You did, there's something about the web forum interface that causes people to send a repeat messages. (I don't know if they edit something and Google sends out an email or what) I've started to cc the user directly if I don't recognize them..

[Julien Charton]

Thanks Robert and William
Sorry for the duplicate post. For some reason the first one did not appear in the list. Even a search did not find it.
After a while I considered I probably made a mistake and posted my question again. Now the 2 posts are visible. sorry.

I think I got the image from http://elinux.org/Beagleboard:BeagleBoneBlack_Debian

It looks like mmcblk1boot1 contains uboot variables. Is it used by the saveenv command ?
And what is the purpose of mmcblk1boot0 ?

I got confused because many tutorials on the web are referring to U-boot/MLO in the FAT16 partition of the sdCard or eMMC.
I think the Angstrom distribution is still using this layout.

Julien

[Αγησίλαος Παπαδόκωστας]

so is mmcblk1boot0/mmcblk1boot1 used for anything? If I wipe them clean is something going to break?

[Robert Nelson]

On Sat, Apr 8, 2017 at 6:42 PM, Αγησίλαος Παπαδόκωστας
<bitj...@gmail.com> wrote:
> so is mmcblk1boot0/mmcblk1boot1 used for anything? If I wipe them clean is
> something going to break?

nothing uses that.

Regards,

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