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Obtaining the UUID of the system for a PXE boot

From: Holger Goetz
Subject: Obtaining the UUID of the system for a PXE boot
Date: Wed, 17 Jul 2013 13:19:30 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:23.0) Gecko/20100101 Thunderbird/23.0

Hello all,

i've started to use grub.efi as boot loader for UEFI based systems and am getting slowly familiar w/ grub2.Now i've come across a problem w/ assigning individual boot configurations to target system identification.
The BIOS line of systems gets booted through pxelinux and get their PXE configuration through files w/ names based on the individual UUID of the system.
The same should be possible for UEFI booted systems, but i couldn't find a way to get hold of the system-UUID yet. The MAC addresse(s) is/are not available and possibly have changed since the definition of the configuration, so even the lately introduced net_default_mac variable doesn't work here. Having the UUID as unique system identifyer across NICs which can be changed would be of big help.

Any pointer/help would be greatly appreciated.
Thanks a lot,

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