Red Hat Linux 10.1 ISO Won't Boot in UEFI Mode

kagbasi-ngc

Good-day Folks,

My Environment:

Hosts: 3-Node Pool (running XCP-ng v8.3.0)
Patch Level: 20251218
Manufacturer: HP, (,ProLiant DL360p Gen8,)
CPU Model: Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz
BIOS Info: HP (P71)
Xen Orchestra: v5 commit 5fcb6

Anybody experiencing any trouble getting the Red Hat Enterprise Linux v10.x ISO files to boot when creating a new VM in Xen Orchestra? I ran into a similar problem with AlmaLinux 10 (I reported it on this thread and @bogikornel responded and informed me that it was related to v2 CPU support having been dropped).

Giving that AlmaLinux is derived from RHEL, my hunch is that this issue may be related. However, I don't see any releases of the RHEL 10.x ISOs that are for the older v2 CPUs.

Here are a couple of screenshots:

UEFI Only
Screenshot 2025-12-29 105714.jpg

UEFI + Secure Boot Enabled
Screenshot 2025-12-29 110318.jpg

olivierlambert

Someone from the @team-os-platform-release should take a look

bogikornel

@kagbasi-ngc

RHEL 10.x only supports CPUs from amd64_v3 onwards, while yours is amd64_v2. Rocky / Almalinux builds for even older CPUs.

https://xcp-ng.org/forum/topic/11447/almalinux-10-dvd-won-t-boot-in-uefi-mode/2

olivierlambert

@kagbasi-ngc said in Red Hat Linux 10.1 ISO Won't Boot in UEFI Mode:

Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz

Ah indeed, I missed this Nice catch @bogikornel!

Andrew

@kagbasi-ngc HP DL360 G9 and newer will work...

kagbasi-ngc

Thanks all, for chiming in. I was hoping that perhaps someone in the community may have done what AlmaLinux did so the amd64_v2 hardware can still use RHEL 10.x.

I'm working on something in my lab and was wondering if it should support RHEL 10, but looks like I need to table that for now.

john.c

Actually Alma Linux does have a variant for v2 CPUs so they can run 10.0. Just look for x86_64 v2 on the downloads page.