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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#7F7F7F">Honeywell Internal</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> linux-fai [mailto:linux-fai-bounces@uni-koeln.de]
<b>On Behalf Of </b>Andreas Heinlein<br>
<b>Sent:</b> Wednesday, April 18, 2018 3:22 AM<br>
<b>To:</b> linux-fai@uni-koeln.de<br>
<b>Subject:</b> [External] Re: GRUB EFI blues - Debian 9/FAI 5.3.6<o:p></o:p></span></p>
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<p class="MsoNormal">Am 18.04.2018 um 10:14 schrieb <a href="mailto:tt-fai@kky.ttu.ee">
tt-fai@kky.ttu.ee</a>:<o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif">I can second to that. I installed a SuperMicro X10SLM-F based server last month and did not find any option in the BIOS to PXE-boot FAI into UEFI mode. Ended up
using disklabel:gpt-bios and GRUB_PC. I did not try to boot off an USB stick, so it is worth investigating if an option exists for booting that in UEFI mode.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From my experiments I was left with the impression that it is not easy (or even possible) to “cross-install” UEFI-boot-capable disk if the system was booted into
legacy (BIOS) mode. If someone has found a way to do it, I would also appreciate suggestions.</span><o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif">Regards,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif">Toomas</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> linux-fai
<a href="mailto:linux-fai-bounces@uni-koeln.de"><linux-fai-bounces@uni-koeln.de></a>
<b>On Behalf Of </b>Andreas Heinlein<br>
<b>Sent:</b> Wednesday, April 18, 2018 9:56 AM<br>
<b>To:</b> <a href="mailto:linux-fai@uni-koeln.de">linux-fai@uni-koeln.de</a><br>
<b>Subject:</b> Re: GRUB EFI blues - Debian 9/FAI 5.3.6</span><o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-GB"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-GB">Am 18.04.2018 um 00:28 schrieb Bob Apodaca:</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-GB">I think the first issue is FAI is setting the GRUB_PC class instead of the GRUB_EFI class and I'm not sure why.</span><o:p></o:p></p>
</blockquote>
<p class="MsoNormal"><span lang="EN-GB">I am pretty sure this depends on how the installation was started. That means you will have to boot your FAI installation using UEFI as well. This can be a bit tricky if you want to install from network - I also tried
setting up PXE with UEFI some time ago and failed.<br>
Bye,<br>
Andreas</span><o:p></o:p></p>
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<p class="MsoNormal">I am pretty sure it is not possible to set up grub-efi correctly when booted in legacy mode. While it is possible to detect that we are actually running an EFI-capable machine (dmidecode or lshw can detect that), we cannot access the efi
variables under /sys/efi since the firmware doesn't expose them to the host when running under CSM aka "Legacy mode".<br>
<br>
Booting from USB with UEFI is possible, in fact I have such a USB device here somewhere. But I need to remember what I did, it was not (yet) completed in FAI at that time. I remember I wanted to make some patches available, but never found the time. This is
almost a year ago now. What you basically need is a small FAT partition preferrably of type 'ef' (EFI Boot Partition) on the USB drive, which contains a grub efi image as EFI/BOOT/BOOTX64.EFI. That image can be created with grub-mkimage and needs to include
at least all modules for reading the "main" partition and the grub.cfg on it. That will be mostly ext filesystem and msdos partition table, I think. That image should also include an embedded config file with a one-liner like<br>
configfile (hd0,msdos1)<br>
if the main partition is the second on the USB drive.<br>
<br>
I will try to find this again and post it here.<br>
<br>
Bye,<br>
Andreas <o:p></o:p></p>
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