On Fri, Jan 23, 2015 at 10:42 AM, Robert P. J. Day
<[email protected]> wrote:
> On Fri, 23 Jan 2015, Robert Nelson wrote:
>
>> On Fri, Jan 23, 2015 at 10:28 AM, Robert P. J. Day
>> <[email protected]> wrote:
>> >
>> > been a while since i had to format an SD card from scratch for my
>> > BBB and, reading RCN's instructions over at eewiki.net, i have a
>> > couple questions.
>> >
>> > reading here:
>> >
>> > https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-SetupmicroSD/SDcard
>> >
>> > and first question is, why is there no need to create and format a
>> > VFAT partition? from memory, i would always create a small, initial
>> > VFAT partition and put MLO and uboot there, and format the rest of the
>> > SD card as ext? for the rootfs.
>> >
>> > but the instructions on that page don't create an initial VFAT
>> > partition, they just raw copy MLO and u-boot.img to exact addresses on
>> > the freshly-zeroed SD card. i had no idea you could do this. or am i
>> > misreading something?
>>
>> It's a feature of the omap4+ bootrom. (omap35/36xx can't do it). We
>> had users deleting MLO/u-boot.img in that fat partition so we started
>> looking for a way to better protect that.
>>
>> Ps.. the bootloader does a lot more internally now too, so we can have
>> simplified /boot/uEnv.txt script...
>
> which rev of the BBB does that relate to? i'm still using rev B.
Any image after August 2014 (cat /etc/dogtag)
Defaults to a boot loader that does:
/boot/uEnv.txt & /boot/vmlinuz-${uname -r}
Either September or October 2014, we switched to MLO/u-boot.img being dd*'ed...
The 2015-01-19 plus some last minute fixes is being tested right now
to update the production boards at CircuitCo..
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#2015-01-19
Regards,
--
Robert Nelson
http://www.rcn-ee.com/
--
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