Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [uefi]

Unified Extensible Firmware Interface (UEFI) is a specification that defines a software interface between an operating system and platform firmware (BIOS)

147 questions
3
votes
2 answers

How do UEFI and virtual machines relate to each other?

I am trying to get my head around UEFI (Unified Extensible Firmware Interface) and it's not entirely clear to me how this affects virtual machines. Thus, there are three parts to this question: Is UEFI an advance in hardware support for…
Iterator
  • 135
  • 6
3
votes
2 answers

UEFI boot sequence initially set to PXE first but always reset to local disk first after ESXi installation

I have some Dell PowerEdge R720 servers for testing. To make life easier, the UEFI boot is set to PXE first and in the PXE boot menu it'll default to boot from local disk if there's no input from the user. And in the PXE menu we can also choose to…
SF.express
  • 378
  • 1
  • 16
2
votes
3 answers

Create iPXE UEFI bootable image for QEMU/Libvirt with custom next-server and filename

I can create a VM with libvirt/qemu to boot in UEFI mode. I know that it does iPXE by default, but I want to create/modify a iPXE image in order to override filename and next-server properties. How can I do such thing? EDIT: I tried the…
djuarezg
  • 131
  • 1
  • 2
  • 8
2
votes
1 answer

How can I generate/or edit a grub.cfg on each EFI partition that refers to the ubuntu installation on the same physical disk?

I have an install of Ubuntu 16.04 server set up on two disks with software raid across two large partitions. The start of each disk contains an EFI partition. I would like to be able to boot from either disk (in case one fails) - one guide I read…
ezekiel
  • 265
  • 1
  • 3
  • 7
2
votes
1 answer

Are my EFI partitions mutually bootable? How to interpret the output of efibootmgr -v

I have two GPT formatted disks both starting with EFI partitions and followed by a single physical raid partition. I installed ubuntu-server 16.04 with software raid over these two raid partitions and once it had installed, I cloned the EFI…
ezekiel
  • 265
  • 1
  • 3
  • 7
2
votes
0 answers

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 such configuration: sda1 512 MB EFI sda2 5 GB…
Pavel_K
  • 85
  • 12
2
votes
1 answer

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 server, and not even a pxe-prompt (setted with…
Patrick Roncagliolo
  • 121
  • 1
  • 1
  • 4
2
votes
3 answers

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 returns the correct results, but is not very robust:…
roelvanmeer
  • 1,764
  • 3
  • 13
  • 27
2
votes
1 answer

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/physical): 512B/4096B Partition Table: gpt Number …
Mladen Adamovic
  • 599
  • 1
  • 3
  • 14
2
votes
1 answer

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 get stuck on the step which uses robocopy to copy…
travhue55
  • 21
  • 1
  • 2
2
votes
1 answer

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 information with blkid). My preseed for…
Antho
  • 21
  • 1
  • 1
  • 4
2
votes
2 answers

SuperMicro X9SRE only boots UEFI Debian 8.1 when "forced"

I have the following configuration: SuperMicro X9SRE (Intel C602 chipset) updated to latest firmware v3.2 (01/2015) LSI Spitfire 9211-4i HBA with 1 GiB NAND cache 3 x 2 TiB SATA 6Gbps HDDs in hardware RAID-5 Debian Jessie 8.1 installed in UEFI mode…
allquixotic
  • 487
  • 1
  • 10
  • 24
2
votes
1 answer

Installing Server 2012R2 on VM with GPT harddrive issues

So... long story short I'm working on automated installations of Windows Server 2012 R2 on systems with GPT drives both physical and virtual. I haven't brought the disk back down stairs to the physical box yet, but my VMs aren't working. Here are…
Dropn Fbombs
  • 31
  • 6
2
votes
4 answers

Kickstarting Ubuntu 14.04: How do I create an "EFI boot partition" from my ks.cfg?

I am PXE booting a server that has two 4Gb drives configured in RAID-1 in order to kickstart an instance of Ubuntu Server 14.04. I am PXE booting in EFI mode, and the install runs fine until I get this error on partitioning: The partition table…
Daniel
  • 145
  • 2
  • 6
2
votes
0 answers

Windows software RAID 1 with EFI bootloader on both disks

I have a Windows Server 2008r2 with two HDDs installed. The main partition, which has Windows installation on it, is mirrored between the two disks. The problem is, this is a UEFI machine, and EFI partition is only on one of the HDDs. So if this HDD…
Spc_555
  • 223
  • 4
  • 11
1 2
3
…
9 10