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author | Scott Rifenbark <srifenbark@gmail.com> | 2019-03-25 10:32:57 -0700 |
---|---|---|
committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2019-03-26 15:38:56 +0000 |
commit | 35742c10f531ba451c06a4e360fecfb55f358b35 (patch) | |
tree | 8e0a948a4e68377f6c5a0b5f41510c01f997af0f /documentation/ref-manual/ref-variables.xml | |
parent | b1641008f072ecd7b8843d80e0d3de6c0584129e (diff) | |
download | poky-35742c10f531ba451c06a4e360fecfb55f358b35.tar.gz |
ref-manual: Removed DISK_DESCRIPTION variable from glossary
(From yocto-docs rev: 0bc99a673376e70279a353f654287068c59a0b03)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'documentation/ref-manual/ref-variables.xml')
-rw-r--r-- | documentation/ref-manual/ref-variables.xml | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml index b49fb2535b..6470c739c2 100644 --- a/documentation/ref-manual/ref-variables.xml +++ b/documentation/ref-manual/ref-variables.xml | |||
@@ -3621,60 +3621,6 @@ | |||
3621 | </glossdef> | 3621 | </glossdef> |
3622 | </glossentry> | 3622 | </glossentry> |
3623 | 3623 | ||
3624 | <glossentry id='var-DISK_SIGNATURE'><glossterm>DISK_SIGNATURE</glossterm> | ||
3625 | <info> | ||
3626 | DISK_SIGNATURE[doc] = "A 32-bit MBR disk signature used by directdisk images." | ||
3627 | </info> | ||
3628 | <glossdef> | ||
3629 | <para role="glossdeffirst"> | ||
3630 | <!-- <para role="glossdeffirst"><imagedata fileref="figures/define-generic.png" /> --> | ||
3631 | A 32-bit MBR disk signature used by | ||
3632 | <filename>directdisk</filename> images. | ||
3633 | </para> | ||
3634 | |||
3635 | <para> | ||
3636 | By default, the signature is set to an automatically | ||
3637 | generated random value that allows the OpenEmbedded | ||
3638 | build system to create a boot loader. | ||
3639 | You can override the signature in the image recipe | ||
3640 | by setting <filename>DISK_SIGNATURE</filename> to an | ||
3641 | 8-digit hex string. | ||
3642 | You might want to override | ||
3643 | <filename>DISK_SIGNATURE</filename> if you want the disk | ||
3644 | signature to remain constant between image builds. | ||
3645 | </para> | ||
3646 | |||
3647 | <para> | ||
3648 | When using Linux 3.8 or later, you can use | ||
3649 | <filename>DISK_SIGNATURE</filename> to specify the root | ||
3650 | by UUID to allow the kernel to locate the root device | ||
3651 | even if the device name changes due to differences in | ||
3652 | hardware configuration. | ||
3653 | By default, <filename>ROOT_VM</filename> is set | ||
3654 | as follows: | ||
3655 | <literallayout class='monospaced'> | ||
3656 | ROOT_VM ?= "root=/dev/sda2" | ||
3657 | </literallayout> | ||
3658 | However, you can change this to locate the root device | ||
3659 | using the disk signature instead: | ||
3660 | <literallayout class='monospaced'> | ||
3661 | ROOT_VM = "root=PARTUUID=${DISK_SIGNATURE}-02" | ||
3662 | </literallayout> | ||
3663 | </para> | ||
3664 | |||
3665 | <para> | ||
3666 | As previously mentioned, it is possible to set the | ||
3667 | <filename>DISK_SIGNATURE</filename> variable in your | ||
3668 | <filename>local.conf</filename> file to a fixed | ||
3669 | value if you do not want <filename>syslinux.cfg</filename> | ||
3670 | changing for each build. | ||
3671 | You might find this useful when you want to upgrade the | ||
3672 | root filesystem on a device without having to recreate or | ||
3673 | modify the master boot record. | ||
3674 | </para> | ||
3675 | </glossdef> | ||
3676 | </glossentry> | ||
3677 | |||
3678 | <glossentry id='var-DISTRO'><glossterm>DISTRO</glossterm> | 3624 | <glossentry id='var-DISTRO'><glossterm>DISTRO</glossterm> |
3679 | <info> | 3625 | <info> |
3680 | DISTRO[doc] = "The short name of the distribution. If the variable is blank, meta/conf/distro/defaultsetup.conf will be used." | 3626 | DISTRO[doc] = "The short name of the distribution. If the variable is blank, meta/conf/distro/defaultsetup.conf will be used." |