ref-manual: Added DISK_SIGNATURE variable description to glossary.
Fixes [YOCTO #6125] (From yocto-docs rev: 5ee5433cc7799a240dd18aa20ce44b3ae978b592) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -1609,6 +1609,40 @@
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</glossdef>
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</glossentry>
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<glossentry id='var-DISK_SIGNATURE'><glossterm>DISK_SIGNATURE</glossterm>
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<glossdef>
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<para>
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Automatically generated random signature that allows the
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OpenEmbedded build system to create a boot
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loader configuration.
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<filename>DISK_SIGNATURE</filename> is different each time
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a <filename>directdisk</filename> image is built.
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<note>
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The "live" option used with
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<link linkend='var-IMAGE_FSTYPES'><filename>IMAGE_FSTYPES</filename></link>
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produces an image file that can be copied directly to
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a CD or USB device and run as is.
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</note>
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The auto-generated <filename>DISK_SIGNATURE</filename> sets
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<filename>SYSLINUX_ROOT</filename> as follows:
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<literallayout class='monospaced'>
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SYSLINUX_ROOT = "root=PARTUUID=${DISK_SIGNATURE}-02"
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</literallayout>
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</para>
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<para>
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It is possible to set the
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<filename>DISK_SIGNATURE</filename> variable in your
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<filename>local.conf</filename> file to a fixed
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value if you do not want <filename>syslinux.cfg</filename>
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changing for each build.
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You might find this useful when you want to upgrade the
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root filesystem on a device without having to recreate or
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modify the master boot record.
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</para>
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</glossdef>
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</glossentry>
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<glossentry id='var-DISTRO'><glossterm>DISTRO</glossterm>
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<glossdef>
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<para>
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