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Questions tagged [uefi]

The tag has no usage guidance.

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0answers
21 views

BHyVe: Is there any way to boot to UEFI shell?

I'm starting BHyVe virtual machine with UEFI firmware from ports using chyves and I have a problem with a boot loader misconfiguration on this particular VM. I don't want to boot to OS in order to ...
0
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0answers
9 views

Windows 10 UEFI Physical to KVM/libvirt Virtual [migrated]

I am migrating my PC from Windows 10 to Linux. There are a few things for which I still need Windows, and I am currently dual-booting, with Windows and Linux on separate physical disks. I'd like to ...
0
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1answer
68 views

Fedora - Configuring as a Xen Host (EFI preferable)

I've got a new Fedora box that I'm setting up as a Xen host (Dom0), which is proving a little more difficult than expected. First stop - install Xen via DNF and reboot. Find that the Xen boot option ...
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0answers
15 views

Generic way to enter UEFI add-on card setup?

I have a Dell PERC H740P RAID card which comes with UEFI firmware. On a Dell server, you can enter its setup screens from the "Device" submenu in the firmware setup. Non-Dell servers tend to not have ...
4
votes
1answer
181 views

HyperV Linux EFI VHDX migration is missing EFI in the boot options

I have a HyperV 2016 cluster of n machine running on W2k16. I've duplicated the VHDX of a RHEL 7.5 (Gen2) VM that runs with this boot order (and secure boot disabled): After creating a new VM with ...
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1answer
220 views

Failing to PXE Boot UEFI Server

I've been having a lot of issues with UEFI boots lately. I have two VMs that I've been using for testing. One is running DHCP/TFTP (CentOS 7) and the other is a client set to UEFI boot. I have ...
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2answers
273 views

Sequence of Windows OS files read at the time of installation

I am installing Windows 10 OS through Ubuntu based Clonezilla Server in PXE UEFI mode. I need to add the windows os provision into the server using grub.cfg for clients deployment. I added the windows ...
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2answers
159 views

Boot Linux in UEFI on a LSI card using GRUB2

Before this question is marked as a duplicate of 'Just installed LSI 9211; no drives showing up to Linux' or anything similar: No. My problem was with the UEFI firmware being unable to boot from the ...
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1answer
32 views

PowerEdge T20 boots to linux without POST

I have a PowerEdge T20 with Arch Linux installed. I rebooted to try to boot from a USB disk, but the system enters Gnome desktop without showing any POST screen. I have an old 17" monitor that I'm ...
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0answers
37 views

Can /boot/efi partition causes issues for kernel boot?

I have a fresh installation of CentOS 7 on a server. I have manually partitioned system and, per installer suggestion, I have created /boot/efi (never asked for that before). After the installation ...
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1answer
1k views

How to boot a UEFI based Windows OS via a Linux PXE server

I would like to install a Windows OS on an UEFI machine via a linux PXE server. I can install Windows OS on a legacy machine by directing it to boot to memdisk and winpe iso image. I understand the ...
2
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1answer
175 views

GCP: Invalid resource usage: 'UEFI feature is not available for this project.'

I created an image using the --guest-os-features="UEFI_COMPATIBLE" option as described in the documentation but when trying to instantiate an VM Instance (using the Console and gcloud) I get the ...
0
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1answer
467 views

dnsmasq proxyDHCP PXE and EFI “start_image() returned Invalid Parameter”

I'm tying to install a PXE install server with dnsmasq in proyxDHCP mode. So far legacy BIOS install is working. When I try to use EFI it fails. With dhcpd the EFI boot is working. Therefore the ...
2
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0answers
584 views

Debian - software RAID 1 in UEFI mode

I am a beginner in UEFI, so excuse me if this question is vey simple. I have two 3 TB disks and want to install Debian 9.4 with RAID1 in UEFI mode.After reading all the information I am thinking about ...
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2answers
254 views

Asus P10S-C/4L won't get past Q Code 62 with Intel E3-1220 v6 and 8GB of DDR4 2400 ecc

Upon power up, the Asus logo appears on screen and the Q Codes change as it moves through the boot procedure until 62 is reached where it gets stuck and stays until I reset or power off. I have sent ...
1
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1answer
996 views

How to convert MBR to GPT and change from BIOS/legacy boot to UEFI

I am trying to convert a Windows 10 Enterprise VM from BIOS boot to EFI/UEFI. After extensive research I found the built-in "MBR2GPT" tool that MS released with Fall Creators Update: https://docs....
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0answers
821 views

IP helper addresses for regular DHCP plus PXE booting

We use WDS to install new workstations, and the newest batch we've gotten are set to use UEFI, so I'm trying to adjust my setup accordingly. Previously, we had the 66 and 67 options set on our DHCP ...
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1answer
408 views

trying to netboot Linux using PXELinux 6.03 in a EUFI 64 board, tftp too slow

I am trying to set up a kids-school lab, using x5-Z8350 based mini PCs: https://ark.intel.com/products/93361/Intel-Atom-x5-Z8350-Processor-2M-Cache-up-to-1_92-GHz Mine seems to have an AMI 64 ...
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0answers
233 views

Install oVirt Node 4.1.6 on IBM x3650 M3

I have here a IBM x3650 M3 Server, with ServerRaid m5015 controller and two disk as raid1 configured. Bios firmware is the newest Version, settings a default except VT-D is enabled and I add legacy ...
1
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0answers
387 views

Fedora 26 UEFI/EFI Rescue Boot

I need to rescue an unbootable UEFI Fedora 26 system. I have booted from the DVD, and used the rescue choot environment. I have a GPT disk with a small FAT32 ESP partition of type EF00. I've run: ...
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1answer
109 views

Troubleshoot libvirt-managed qemu x86-64 UEFI guest

I have a libvirt/qemu/x64 UEFI guest running Windows 10. The problem is that it starts successfully every other time. When I issue a guest start commmand (any libvirt method) 1st time, the guest ...
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0answers
816 views

hyper v vm: can i convert a gen2 vm into a gen1 vm?

Current Situation: We have about 20 uefi-based gen2 vms with scalable vhdx on our hyper v Manager. (all licensed MS products) We want to move them to azure. Problem: In order to upload a vm to azure, ...
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0answers
443 views

WDS + GRUB2 UEFI: most menu items not working

We are using WDS to deploy operating systems to several types of machines. As per this small guide, I got the UEFI clients to boot grub, but most of the menu items aren't working. When highlighting a ...
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1answer
416 views

create bootable ISO from USB flash drive recovery media with imgburn or other tool

I need clean my HDD and partitions but first did a recovery usb drive with the recovery tool, the recovery is one of Thinkpad E431 and was done right. I cant rely only on a fragile usb drive to keep ...
1
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1answer
3k views

PXE booting EFI Livecd - CentOS

I've got a legacy PXE server that does everything we need at my company, and entries that boot to a (custom) CentOS 7 livecd, again, in legacy PXE. I'd like to get these things working under EFI PXE. ...
0
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1answer
253 views

Prepare Dell PowerEdge R430 for Software Raid Linux

I am wondering which settings are recommended for a R430 to run in Software Raid mode. The server is equipped with 4 disks which should run in Raid 1 for the boot/system and Raid 10 for data. However ...
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2answers
2k views

UEFI PXE booting across subnets

I'm trying to boot PCs from a Windows 2012R2 WDS server in UEFI mode. If, and only if, the client is in a different subnet from the DHCP/PXE servers, this fails with some of them. (It always works in ...
1
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1answer
4k views

ESXi boot stuck at “Press ESC in 1 seconds to skip startup.nsh”

I had to move the primary hard drive that has ESXi installed to the next slot over due to a broken pin on the connector. This causes the system to boot to the screen which says "Press ESC in 1 seconds ...
3
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2answers
1k views

Is it possible to access network resources through an EFI shell?

I keep seeing allusions to the idea that EFI / UEFI shells support network resources with an extension, but I don't seem to be able to find anything concrete. I'm trying to get sas3flash.efi on to a ...
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1answer
4k views

Trouble with DnsMasq, DHCP proxy, PXE for UEFI clients

I'm trying to setup a PXE server with dnsmasq as a dhcp-proxy. It works well with client-arch=0 (x86 legacy clients) but UEFI client doesn't even terminate the DHCP packets exchange with the PXE ...
3
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1answer
671 views

BTRFS-RAID and booting from EFI system partition

UEFI requires booting from a ESP which is most of the time formatted as vFAT. If I recall correctly BTRFS could have sub-volumes formatted as ext3/ext4 like the Logical Volume Manager (LVM). However, ...
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2answers
2k views

Ubuntu 16.04 Server new installation can't get past Grub (Probable UEFI issue)

Attempting to install Ubuntu 16.04 Server onto a newly initialised disk. Using UEFI, and a 4.5TB / partition. After installing without issue, on rebooting, the server will not get past Grub. ...
1
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2answers
466 views

linux - how to list partitions of specific type?

I am looking for a way to list all partitions of a specific type on linux. (Specifically: all EFI system partitions). I know blkid can filter on filesystem type: the command blkid -t TYPE=vfat ...
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1answer
5k views

Syslinux: How to correctly configure for UEFI PXE boot?

A variety of machines will happily boot a custom bzImage via PXE in legacy mode using syslinux. In UEFI mode, one of these machines and a newer UEFI only board get assigned an IP address, TFTP ...
2
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1answer
1k views

UEFI iPXE boot into debian results in grub shell

For a bit of context, I'm a sysadmin student, trying to expand my network knowledge since it's not my strongest point. Currently, I'm experimenting with PXE. A few days ago, I set up a few ESXi ...
0
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1answer
215 views

HPE DL20 RHEL 6 kickstart installation from dvd

I have a dvd with a RHEL 6.6 installer with its customized kickstart file for automation, and this dvd has been tested in other servers and is able to perform an installation, so it works fine. The ...
4
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2answers
3k views

Reimage a Hyper V Gen 2 / UEFI VM

So we finally bit the bullet and started using UEFI for our desktops. It works perfectly for our Hyper V images - we can create gen 2 VMs all day long. This is true until we need to reimage. How do I ...
0
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1answer
356 views

Forcing legacy boot

I have a new PC with a reference Intel motherboard and AMI BIOS (5.010 on a LynxPoint-LP chipset motherboard). There is no OEM support, so I'm on my own with this. I have a PXE network and WDS ...
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1answer
391 views

How to PXE boot systems that only have EFI/UEFI firmware (with no BIOS downgrade option)?

I run/work in a heterogeneous environment. The network is mostly run on Windows servers for DNS and DHCP. We use Linux for various other things. I have some brand new Toshiba Laptops that that will ...
2
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1answer
249 views

GPT, grub and mdadm. sda drive replaced, raid rebuilt in recovery mode, but now server won't boot

This is how partition table loooks like: (parted) print Model: ATA TOSHIBA DT01ACA2 (scsi) Disk /dev/sda: 2000GB Sector size (logical/...
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2answers
3k views

Convert From UEFI to Legacy BIOS in Windows Server 2012

We are looking into Azure Site Recovery as a possible BCDR solution, and have encountered a bit of an issue in that Azure doesn't support UEFI firmware when synchronizing VMWare VMs. Is there any way ...
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0answers
344 views

How to find wwn through EFI Shell?

I have not installed any OS in the server. HBA card is attached to the server and after power ON it enters into EFI shell. I entered below command and it show FC driver drivers Output like 17F ...
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0answers
893 views

Copy EFI partition and BCD store to a second drive

I'm attempting to set up dynamic boot partition mirroring on GUID partition table (GPT) disks as part of making a bootable mirror of a Windows system drive. I am following Microsoft's KB951985 but I ...
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1answer
741 views

MinnowBoardMax: Boot Failed. EFI Misc Device

Upon setting up a new MinnowBoard Max with a stock Debian install, I get the error Boot Failed. EFI Misc Device at boot. Searching all over the nets yield little help. I can start the system fine by ...
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2answers
653 views

WDS boot image doesnt want to start

I'am using Microsoft Hyper-V on Windows Server 2012 R2. I Have virtual machine of generation 2. My goal is to boot Windows PE boot image from WDS server using PXE. PXE boot seems OK. WDS starts its ...
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1answer
7k views

Esxi hypervisor install: uefi or bios?

I recently bought Dell PowerEdge T430 server and I want to install on it ESXi 6.0. Since VMware now supports UEFI (from version 5.0) I want to ask how to install hypervisor? BIOS UEFI After install, ...
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0answers
3k views

Deploying windows 7 in UEFI GPT mode via WDS

I am in the process of attempting to deploy Windows 7 x64 GPT UEFI via WDS with an unattend.xml file. Working: Windows 7 x64 GPT UEFI via WDS without unattend.xml Windows 8 x64 GPT UEFI via WDS ...
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1answer
5k views

Preseeding debian install - EFI

The EFI partition is formatted in ext4 during the setup of debian. I am trying to preseed the install of debian jessie and I can't get it working since the UEFI partition is formatted in ext4 (got ...
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0answers
561 views

EFI Error after Windows Server Volume Restore

We had an epic failure of our Windows Server 2012 R2 Essentials Server. We are running a Western Digital Sentinel 5100, and the RAID controller somehow wiped every disk (yay!). We are trying to ...
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3answers
4k views

Changing uEFI boot order from Windows

I can't get Windows to change the uEFI boot order to PXE boot first from within windows. I'm trying to automate the system so that it PXE boots every time, so I can control the boot option. I've tried ...