Dňa utorok, 2. mája 2017 16:52:46 UTC+2 RobertCNelson napísal(-a):
>
> On Tue, May 2, 2017 at 9:46 AM, Radovan Chovan <[email protected] 
> <javascript:>> wrote: 
>

> > you'll need to update the UUID variable in /boot/uEnv.txt along with 
> > the parameters in /etc/fstab 
>

Note: I have access to SD card versions of these files, so I edited files 
on SD card (not on eMMC internal memory)
*/etc/fstab - before changes:*

# /etc/fstab: static file system information.
#
# Auto generated by RootStock-NG: setup_sdcard.sh
#
/dev/mmcblk0p1  /  ext4  noatime,errors=remount-ro  0  1
debugfs  /sys/kernel/debug  debugfs  defaults  0  0

*/etc/fstab - after changes:*

# /etc/fstab: static file system information.
#
# Auto generated by: beaglebone-black-eMMC-flasher.sh
#
UUID=50d572df-6313-4600-844c-5da83e43e5b5  /  ext4  noatime,errors=remount-ro 
 0  1
UUID=E302-7CCA  /boot/uboot  auto  defaults  0  0
debugfs  /sys/kernel/debug  debugfs  defaults  0  0

I used UUID values from my two BeagleBoneBlack Debian Wheezy(2014-05-14) 
boards (they have same UUID values, because they were flashed from same SD 
card I think) which runs on eMMC.





*/boot/uEnv.txt - before changes:*
#Docs: http://elinux.org/Beagleboard:U-boot_partitioning_layout_2.0

#uname_r=4.4.9-ti-r25
uname_r=4.4.9+
#uuid=
#dtb=

##BeagleBone Black/Green dtb's for v4.1.x (BeagleBone White just works..)

##BeagleBone Black: HDMI (Audio/Video) disabled:
#dtb=am335x-boneblack-emmc-overlay.dtb

##BeagleBone Black: eMMC disabled:
#dtb=am335x-boneblack-hdmi-overlay.dtb

##BeagleBone Black: HDMI Audio/eMMC disabled:
#dtb=am335x-boneblack-nhdmi-overlay.dtb

##BeagleBone Black: HDMI (Audio/Video)/eMMC disabled:
#dtb=am335x-boneblack-overlay.dtb

##BeagleBone Black: wl1835
#dtb=am335x-boneblack-wl1835mod.dtb

##BeagleBone Green: eMMC disabled
#dtb=am335x-bonegreen-overlay.dtb

cmdline=coherent_pool=1M quiet cape_universal=enable

#In the event of edid real failures, uncomment this next line:
#cmdline=coherent_pool=1M quiet cape_universal=enable 
video=HDMI-A-1:1024x768@60e

##Example v3.8.x
#cape_disable=capemgr.disable_partno=
#cape_enable=capemgr.enable_partno=

##Example v4.1.x
#cape_disable=bone_capemgr.disable_partno=
#cape_enable=bone_capemgr.enable_partno=

##enable Generic eMMC Flasher:
##make sure, these tools are installed: dosfstools rsync
#cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh



*/boot/uEnv.txt - after changes*
...


*##note: the eMMC flasher script relies on the next 
linemmcroot=UUID=50d572df-6313-4600-844c-5da83e43e5b5 rommcrootfstype=ext4 
rootwait fixrtc*

##enable Generic eMMC Flasher:
##make sure, these tools are installed: dosfstools rsync
*cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh*

Then I rebooted board via "sudo reboot". Switch SW8 on Chipsee board was 
still "uSD".

After reboot there is white background and Debian logo on it for one 
second, immediately after that there is black screen with "linux penguin" 
in left upper corner for cca 10 minutes and then only black screen.
USER LEDs state:
[x] [] [] []
USERLED0 is still blinking (2times quickly, then short pause and this is 
repeating).

When I removed SD card, switched SW8 to "eMMC", only Debian logo appeared 
for one second and then nothing happened.
USER LEDs state:
[] [] [] []
 
Is now my only solution flash SD card again? Fortunately I made backup 
(*.img) via Win32DiskImager.
And what could I do wrong with editing two mentioned files?



> > Plug in a usb-serial adapter, you should see that eMMC flasher logging 
> > the process over serial 
>

Do you have some "manual" for me, how can I see these logging messages on 
my PC(OS Windows8.1)?
But there is better option for me (which I used with Debian Wheezy and 4D 
Systems Touchscreen) : Flashing eMMC via "dd" command (OS runs on SD card 
via this process), then removing SD card and start OS from eMMC without 
inserted SD card. 

>
> Regards, 
>
> -- 
> Radovan 
>

-- 
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