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ref-manual: Removed DISK_DESCRIPTION variable from glossary

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(From yocto-docs rev: 0bc99a673376e70279a353f654287068c59a0b03)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark
2019-03-25 10:32:57 -07:00
committed by Richard Purdie
parent b1641008f0
commit 35742c10f5
1 changed files with 0 additions and 54 deletions
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54
documentation/ref-manual/ref-variables.xml
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@@ -3621,60 +3621,6 @@
</glossdef>
</glossentry>
<glossentry id='var-DISK_SIGNATURE'><glossterm>DISK_SIGNATURE</glossterm>
<info>
DISK_SIGNATURE[doc] = "A 32-bit MBR disk signature used by directdisk images."
</info>
<glossdef>
<para role="glossdeffirst">
<!-- <para role="glossdeffirst"><imagedata fileref="figures/define-generic.png" /> -->
A 32-bit MBR disk signature used by
<filename>directdisk</filename> images.
</para>
<para>
By default, the signature is set to an automatically
generated random value that allows the OpenEmbedded
build system to create a boot loader.
You can override the signature in the image recipe
by setting <filename>DISK_SIGNATURE</filename> to an
8-digit hex string.
You might want to override
<filename>DISK_SIGNATURE</filename> if you want the disk
signature to remain constant between image builds.
</para>
<para>
When using Linux 3.8 or later, you can use
<filename>DISK_SIGNATURE</filename> to specify the root
by UUID to allow the kernel to locate the root device
even if the device name changes due to differences in
hardware configuration.
By default, <filename>ROOT_VM</filename> is set
as follows:
<literallayout class='monospaced'>
ROOT_VM ?= "root=/dev/sda2"
</literallayout>
However, you can change this to locate the root device
using the disk signature instead:
<literallayout class='monospaced'>
ROOT_VM = "root=PARTUUID=${DISK_SIGNATURE}-02"
</literallayout>
</para>
<para>
As previously mentioned, it is possible to set the
<filename>DISK_SIGNATURE</filename> variable in your
<filename>local.conf</filename> file to a fixed
value if you do not want <filename>syslinux.cfg</filename>
changing for each build.
You might find this useful when you want to upgrade the
root filesystem on a device without having to recreate or
modify the master boot record.
</para>
</glossdef>
</glossentry>
<glossentry id='var-DISTRO'><glossterm>DISTRO</glossterm>
<info>
DISTRO[doc] = "The short name of the distribution. If the variable is blank, meta/conf/distro/defaultsetup.conf will be used."