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Documentation: minor update to the tutorial about Ubuntu as SOS

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Minor update to the tutorial on how to use Ubuntu as the Service OS
with ACRN. Specifically, the instructions for making the Grub menu
visible at boot time now involved modify the /etc/default/grub file
and not the /boot/grub/grub.cfg as before.

Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
This commit is contained in:
Geoffroy Van Cutsem 2018-10-16 22:59:05 +02:00 committed by David Kinder
parent 21458bddff
commit 2b449680ff
1 changed files with 8 additions and 9 deletions
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17
doc/tutorials/using_ubuntu_as_sos.rst
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@ -188,21 +188,20 @@ You can download latest Service OS kernel from
The command line for the kernel in /etc/grub.d/40_custom should be all
as a single line, not as multiple lines. Otherwise the kernel will fail to boot
* Modify the ``/etc/default/grub`` file to make the grub menu visible when booting.
There are a couple of lines to be modified, as shown below.
.. code-block:: none
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=false
* Update Grub on your system
.. code-block:: none
sudo update-grub
At this point, you need to modify ``/boot/grub/grub.cfg`` file manually to
enable the timeout so that the system has an opportunity to show you the
grub menu. (Without this the grub choice menu won't display.)
.. code-block:: none
#set timeout_style=hidden
set timeout = 10
#. Reboot the system
Reboot system. You should see the Grub menu with the new “ACRN ubuntu SOS”