It seems I bought the wrong NUC

[Oknet]

Just bought a NUC11TNKi5

I have to install a centos7 linux distro into NVMe ssd

It is known that Legacy Bios Boot is MANDATORY

Intel has well-decided to remove this.

Actual boot mode of NUC11 produces a kernel panic.

Is there any way to have legacy mode back ?

Did I thrown 500€ inside the sinkhole ?

Any workaround ?

Thank you 

[n_scott_pearson]

My personal opinion: Any distro that, in this day and age, cannot support UEFI boot is one that should be trashed immediately. Don't blame the NUC; Legacy is insecure - and cannot be made secure - so all machines are going this way rapidly.

Off my soapbox now...

...S

[itsme]

RHEL7 / CentOS7  deploy the grub2 bootloader.  And  grub2  boots from UEFI  just fine.

[root@centos7 ~]# uname -r
3.10.0-1160.76.1.el7.x86_64
[root@centos7 ~]# cat /etc/centos-release
CentOS Linux release 7.9.2009 (Core)
[root@centos7 ~]# ls -ltr /boot/efi/EFI/*
/boot/efi/EFI/BOOT:
total 1928
-rwx------. 1 root root  362232 Jul 31  2020 fbx64.efi
-rwx------. 1 root root  362232 Jul 31  2020 fallback.efi
-rwx------. 1 root root 1243864 Jul 31  2020 BOOTX64.EFI

/boot/efi/EFI/centos:
total 7208
-rwx------. 1 root root    7591 Mar  6  2017 grub.cfg.1492354934.rpmsave
-rwx------. 1 root root    7600 Jul  5  2017 grub.cfg.1505391814.rpmsave
-rwx------. 1 root root    5894 Sep 28  2018 grub.cfg.1543923908.rpmsave
-rwx------. 1 root root    5897 Aug  3  2019 grub.cfg.1568890182.rpmsave
-rwx------. 1 root root   70640 Jul 29  2020 fwupia32.efi
-rwx------. 1 root root   80072 Jul 29  2020 fwupx64.efi
drwx------. 2 root root    4096 Jul 29  2020 fw
-rwx------. 1 root root 1243864 Jul 31  2020 shimx64.efi
-rwx------. 1 root root 1237824 Jul 31  2020 shimx64-centos.efi
-rwx------. 1 root root 1243864 Jul 31  2020 shim.efi
-rwx------. 1 root root 1154640 Jul 31  2020 MokManager.efi
-rwx------. 1 root root 1154640 Jul 31  2020 mmx64.efi
-rwx------. 1 root root     134 Jul 31  2020 BOOTX64.CSV
-rwx------. 1 root root     134 Jul 31  2020 BOOT.CSV
-rwx------. 1 root root 1122120 May 20 14:58 grubx64.efi
drwx------. 2 root root    4096 May 21 22:22 fonts
-rwx------. 1 root root    1024 Aug 15 22:44 grubenv
-rwx------. 1 root root    6049 Aug 15 22:44 grub.cfg
[root@centos7 ~]# gdisk -l /dev/sda
GPT fdisk (gdisk) version 0.8.10

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

[Oknet]

Well, despite Scott point of view is correct, I'm trying to install the latest version of VoIP pbx Freepbx, based on CentOS 7.8.2003.3 that is installing fine on legacy mode (i.e. NUC10).

I discovered the issue is not really UEFI related , rather the use of M2 NVMe disk causes a kernel panic.

The distro installs correctly into NUC11 on sata M2 disk.

I'm looking for a (known?) workaround, and I haven't enough knowledge to work on kernels, kernel arguments,  kickstarts etc...

[n_scott_pearson]

For a case like this, likely a newer release of the distro is necessary to get (NVMe) support.

...S

[itsme]

For what it's worth,  FreePBX successfully boots from nvme  with virtualbox.  The problem you're facing is most likely outdated HW support, as RHEL7  is quite old and has been in maintenance support 2 phase since August 2020.

Perhaps it is easier and  less tedious to simply install a hypervisor  and run freepbx in a virtual machine until an updated distribution is released.

[Jean_Intel]

Hello everyone,

If I may jump into the conversation, I would like to add that Intel is phasing out support for legacy Basic Input/Output System (BIOS) boot mode. Intel will not support issues, questions, or debug scenarios on legacy platform BIOS configurations, as they are not official plans on record.

All Intel® NUC 11 Kits & Mini PCs do not support Legacy BIOS Support. You can check this information in the following article.

This same information can be found in the document, Legacy BIOS Boot Support Removal for Intel Platforms.

Best regards, 

Jean O.  

Intel Customer Support Technician

[Jean_Intel]

Hello everyone,

As I mentioned in my previous post, Intel will not support issues, questions, or debug scenarios on legacy platform BIOS configurations, as they are not official plans on record. Based on this, I will close the thread now. If you need any additional information, please submit a new question as this thread will no longer be monitored. 

Best regards, 

Jean O.  

Intel Customer Support Technician