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doc: update Grub configuration instructions for Ubuntu (Service VM)

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Update the "Using Ubuntu as the Service OS" tutorial to tweak the instructions
pertaining to the Grub bootloader configuration. Specifically, update to reflect
the content of '/etc/default/grub' in Ubuntu 18.04 and also make loading the
Service OS kernel the default.

Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
This commit is contained in:
Geoffroy Van Cutsem 2020-02-06 16:53:39 +01:00 committed by deb-intel
parent 920f02706a
commit db6fe1e347
1 changed files with 6 additions and 5 deletions
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11
doc/tutorials/using_ubuntu_as_sos.rst
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@ -173,7 +173,7 @@ You can download latest Service OS kernel from
.. code-block:: none .. code-block:: none
menuentry 'ACRN ubuntu SOS' { menuentry 'ACRN ubuntu SOS' --id ubuntu-service-vm {
recordfail recordfail
load_video load_video
insmod gzio insmod gzio
@ -194,14 +194,15 @@ You can download latest Service OS kernel from
The command line for the kernel in /etc/grub.d/40_custom should be all 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 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. * 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. and make it load the Service OS kernel by default.
There are a few lines to be modified, as shown below.
.. code-block:: none .. code-block:: none
GRUB_DEFAULT=ubuntu-service-vm
#GRUB_TIMEOUT_STYLE=hidden #GRUB_TIMEOUT_STYLE=hidden
#GRUB_HIDDEN_TIMEOUT=0 GRUB_TIMEOUT=3
GRUB_HIDDEN_TIMEOUT_QUIET=false
* Update Grub on your system * Update Grub on your system