I had a similar issue this week. I had to change the settings through ASU to do the following
BootModes.SystemBootMode=UEFI Mode Otherwise the machine would not boot. I tried my usual ASU settings, but couldnt get it to work I had 2 racks working, and one not. And the above command resolved it Sent from my Android phone using Symantec TouchDown (www.symantec.com) -----Original Message----- From: Andrew Loftus [[email protected]] Received: Friday, 29 Jul 2016, 21:08 To: xCAT Users Mailing list [[email protected]] Subject: Re: [xcat-user] Boot order changed after CentOS install on Lenovo 3550 Thanks for the information Jarrod! There is no special partitioning and only one "visible" hard drive (there are two physical drives setup in a hardware mirror). I'm relatively new to UEFI systems. Perhaps if I understand it better I can troubleshoot it better. Where can I learn more about the UEFI install procedure that you mentioned above? On Fri, Jul 29, 2016 at 2:40 PM, Jarrod Johnson <[email protected]<mailto:[email protected]>> wrote: Just using the normal storage local? No SAN attached storage or anything? For reference, on install UEFI compatible systems look at the partition id they write their boot loader to. They take the partition uuid and tell UEFI firmware 'hey, next time boot to this file on the partition with this UUID'. If it for some reason selected a storage device that is *not* visible from UEFI, this behavior would be seen (It's looking for a UUID that doesn't exist). Is there a custom partition plan? Are there multiple disks? Some versions of CentOS will struggle if '/boot' and '/boot/efi' get split up, for example. From: Andrew Loftus [mailto:[email protected]<mailto:[email protected]>] Sent: Friday, July 29, 2016 3:36 PM To: [email protected]<mailto:[email protected]> Subject: [xcat-user] Boot order changed after CentOS install on Lenovo 3550 xCAT version: 2.11.1 OS: CentOS Linux release 7.2.1511 (Core) Hardware: Lenovo X-series 3550 Install type: diskful install Node PXE boots successfully and OS install completes successfully. Upon reboot, the machine fails to boot because it can't find a valid OS. Using rcons to get to machine console, we find a new boot option named 'CentOS' and it is first in the boot priority list. Does anyone know where this comes from? Why it's there? How to fix it or prevent it from getting set in the first place? Even a gentle shove in the right direction to troubleshoot this would be greatly appreciated. Cheers, --Andy
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