On Thursday, December 19, 2013 4:20:34 PM UTC+11, John Syne wrote:
>
>
>
> From: >
> Reply-To: >
> Date: Wednesday, December 18, 2013 at 7:33 PM
> To: >
> Subject: [beagleboard] Re: Beaglebone Black won't boot from Micro SD, all
> LEDs remain lit
>
>
> Hi,
>>
> I have a Beagleboard Black, San micro sdcard 16g extreme with the Kali
> Linux Image on it. With the help of Tobin over at Win32 image writer I saw
> that the write was correct with an image
> G (microsd card) 122M
> G /storage/kali/images/beaglebone-black/root 6.72G
> opened partition to find 12 folders
> So the partition is there and working. Win32 image did its job. This
> means boot problem then I found your group. Read the threads.
> I modified the text file uEnv
> Used these following values
>
> mmcdev=1
> bootpart=1:2
> mmcroot=/dev/mmcblk1p2 ro
>
> I’m not sure why you want to make these changes in uEnv. If the SDCard is
> installed, it is mmcdev=0 and eMMC is mmcdev=1. Best to use the default
> uEnv file.
>
> If you are unsure, you can always run each command at the u-boot prompt
> and see what happens. You can list files in the FAT partition with “fatls
> mmc 0” and load the uEnv.txt file with “run loadbootenv” and “run
> importbootenv”, which updates your u-boot env. Check this with printenv.
> Best way to learn is to do this step by step.
>
> Regards,
> John
>
>
> to replace
>
> echo Booting from external microSD...; setenv mmcdev 0; else setenv mmcdev
> 1; if test $mmc0 = 1; then setenv mmcroot /dev/mmcblk1p2 rw; fi;
> ext4load mmc 1:2 ${loadaddr} /boot/zImage && mw.l 4804c194 00c0; echo
> Booting from internal eMMC...; fi
>
> No change. S2 button should be held until 4 leds light up - no leds light
> up.
> Any tips,
> Thanks
>
> John,
>
> John
Thanks I was following William Hermans post. uEnv is the boot program which
links into the image folders so the uEnv program has had no problems which
is good to know. I will try the step by step approach.
Bruce
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