similar to: UEFI and PXE

Once upon a time, isdtor <isdtor at gmail.com> said: > We have a working PXE setup. I've tried to adapt it to UEFI as per > RHEL6 manual, but the client won't boot. I have BIOS+UEFI PXE boot set up, although it took some doing. I still use SYSLINUX for BIOS, but GRUB2 plus Red Hat's secure boot shim for UEFI. I never could get SYSLINUX's UEFI support working very

Chris Adams writes: > Once upon a time, isdtor <isdtor at gmail.com> said: > > We have a working PXE setup. I've tried to adapt it to UEFI as per > > RHEL6 manual, but the client won't boot. > > I have BIOS+UEFI PXE boot set up, although it took some doing. I still > use SYSLINUX for BIOS, but GRUB2 plus Red Hat's secure boot shim for > UEFI. I never

Hello there, Dell XPS-15-9560 laptop (SSD drive, UEFI, secure boot off).. Windows 10 pre-installed, CentOS7 installed in a separate partition and running for months w/o issue. Don't know what happened but at reboot yesterday (not even booted in Windows, just rebooted), grub has disappeared, booted in Windows by default, which apparently has taken over the UEFI boot. By booting from a USB

I am running an Intel x64 machine using UEFI to boot an SSD. Installing the latest yum update which includes grub2 and kernel 4.18.0-193.14.2.el8_2.x86_64 renders the machine unbootable, blank screen where grub should be, no error messages, just hangs. After some hours I managed to modify another bootable partition (containing older software) and boot it from there. After that, I? found out

I checked and secure boot is turned off. Jonathan brings it exactly to the point: we have to face UEFI because legacy mode is fading out, if I enable legacy mode I can't even boot anymore through the network (PXE) as these newer network cards can only boot PXE with UEFI. In the mean time I have installed Ubuntu 17.10 with Xen and I was lucky to see that this combination works with UEFI even

Gordon Messmer writes: > On 10/21/19 6:38 AM, isdtor wrote: > > Booting with CentOS6 /boot/efi/EFI/redhat/grub.efi, and the older style pxe config file as per ... results in a grub (legacy) prompt on the target machine. > > > Have you tried using the file from the installation tree? > > http://centos.s.uw.edu/centos/6/os/x86_64/EFI/BOOT/ > > or with files

Chris Adams writes: > Once upon a time, isdtor <isdtor at gmail.com> said: > > 11:06:51.413549 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 390) > > 10.1.2.2.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP, Reply, length 362, xid 0x4007adc6, Flags [Broadcast] (0x8000) > > Your-IP 10.1.2.57 > > Server-IP

> Just set up ISC DHCP on fresh CentOS 7 install and followed the redhat > guide linked in this thread. > Did what I thought was correct and duplicated the OPs problem. > /me scratches head. . . off to `tcpdump -vv -nn -i ens192`. . . packets > never lie. . . > Vendor-Class Option 60, length 32: > "PXEClient:Arch:00007:UNDI:003000" > > d'oh; I

Morning all, I have a HP Envy dual boot system (Win8 for serious stuff, i.e. Train Sim and Flight Sim) and Centos 7 for everything else. In the past I've had the occasional problem where an update on the windows side has updated the UEFI boot sequence but using efibootmgr has always fixed it. On Friday I discovered that my HDD was failing so I tried using Clonezilla to move it on to a new

Hi folks, I am able to install workstation successfully on a dedicated SSD w/ GPT partition w/ UEFI boot using the latest `CentOS-8.2.2004-x86_64-dvd1.iso` from a bootable pen drive. The motherboard is ASRock x570 Gaming 4 ( https://www.asrock.com/mb/AMD/X570%20phantom%20Gaming%204/index.asp) w/ Ryzen 3600, 16G RAM, 1TB SSD in question. However, after login, when I do a DNF update (which is

Hi all, I had the same problem with my UEFI bios machine and I fixed it so for Centos 7: 1) Boot from an rescue linux usb 2) When the rescue system is running: ??? 2.1) #chroot /mnt/sysimage 3) Config network: ??? 3.1) # ip addr add X.X.X.X/X dev X ??? 3.2) # ip route add default via X.X.X.X??? <--- default router 4) And finally: ??? #yum downgrade shim\* grub2\* mokutil ???

hi guys I've one box where I just yesterday upgraded Centos. I wonder if that kernel upgrade process might somewhat troublesome. After that upgrade UEFI boot fails with: Failed to set MokListRT: Invalid Parameter Something has gone seriously wrong: import_mok_state() failed : Invalid Parameter Has anybody seen that? And maybe know to fix it? many thanks, L.

Hello Chris, On Thu, 01 Feb 2018 17:00:03 +0000 Chris Murphy <lists at colorremedies.com> wrote: > You can to use efibootmgr for this. NVRAM boot entry is what changed, not > the contents of the EFI System partition. > > efibootmgr -v > > Will list all entries and Boot Order. You need to use --bootorder to make > sure the CentOS entry is first. Interesting.. thanks

Am 16.06.20 um 22:04 schrieb Fabian Arrotin: > On 16/06/2020 15:06, Leon Fauster via CentOS wrote: >> Hi all, >> >> I updated a Dell XPS laptop from CentOS 8.1 (1911) to 8.2 (2004). >> >> Installed kernels are >> kernel-4.18.0-147.5.1.el8_1.x86_64 >> kernel-4.18.0-147.8.1.el8_1.x86_64 >> kernel-4.18.0-193.6.3.el8_2.x86_64 >> >>

Hello, I am trying to build a PXE boot image for CentOS 7. livemedia-creator --make-pxe-live --ks=ks --no-virt It runs the entire process and then it says: losetup: /dev/: detach failed: Inappropriate ioctl for device 2019-12-26 11:49:47,293: Disk Image install successful 2019-12-26 11:49:47,293: working dir is /var/tmp/tmpKwqC77 mount: /dev/loop0 is write-protected, mounting read-only mount:

I am trying to use a kickstart to install CentOS 8.2 on a server with a pair of drives with Linux software RAID 1. The install completes, but the resulting system will not boot - I get "Booting from Hard drive C:" from the BIOS (Dell in legacy BIOS mode, not UEFI) and it stops. If I then start the installer in rescue mode and run grub2-install on the two drives, it boots okay. If I

I have tried 4 time unsuccessfully to install Xen 4 on Ubuntu Lucid (10.4) 64 bit version using the tutorial at http://bderzhavets.wordpress.com/2010/04/24/set-up-ubuntu-10-04-server-pv-domu-at-xen-4-0-dom0-pvops-2-6-32-10-kernel-dom0-on-top-of-ubuntu-10-04-server/ on a Lenovo thinkcentre workstation. When I boot I get a kernel panic. If I boot the Linux kernel that I compiled using the

Hi all, I updated a Dell XPS laptop from CentOS 8.1 (1911) to 8.2 (2004). Installed kernels are kernel-4.18.0-147.5.1.el8_1.x86_64 kernel-4.18.0-147.8.1.el8_1.x86_64 kernel-4.18.0-193.6.3.el8_2.x86_64 Unfortunately I can not boot into the latest kernel-4.18.0-193.6.3.el8_2.x86_64. After grub2 screen I only see following line: EFI stub: UEFI Secure Boot is enabled Booting into the older

Is there a way to get GRUB2 and the kernel to run a "serial" console under KVM? I'm running a Fedora 20 desktop, with libvirt-managed VMs. When I run a CentOS 6 VM, I can set both the boot loader and kernel up to use ttyS0 and get a console compatible with "virsh console". When I try the same with a CentOS 7 VM, it doesn't work. If I set it to ttyS0, I just

Hello, I have installed the Xen 4.1.1 and a working kernel 2.6.32.43 which supports Xen on a Ubuntu Linux 10.04 LTS. However, I have never successfully booted the Hypervisor and Dom0. The screen is always black after some kernel messages rapidly go by. I think that I may pass the wrong parameters to the kernel or Hypervisor with GRUB2. Can any one share his/her working grub.cfg for GRUB2 with