Questions tagged [boot-loader]

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GRUB2 - In read command not working backspace. delete. arrows keys

In GRUB2 I have this simple menuentry: menuentry "Ubuntu 20.04 Company Autoinstall" { read userinput linux /vmlinuz [...] automatic-ubiquity some=${userinput} --- [...] } I need in menuentry ...
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15 views

Ipxe sanboot: Boot ubuntu legacy bios disk

I have installed ubuntu-16 on 2 ISCSI disks, one with legacy bios and one with UEFI(I did this with QEMU). I want to boot these disks through IPXE on my openstack cluster I am able to boot ubuntu 16 ...
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1answer
72 views

Need to replace the HDD on a single disk system

I need to replace the HDD on a single disk system used as a pbx (CentOS-6 based FreePBX). The existing partition structure is: ls -l /dev/sd* brw-rw---- 1 root disk 8, 0 Apr 17 2018 /dev/sda brw-rw-...
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CentOS 8 keeps booting an old kernel

A CentOS 8 metal-bare server from OVH with a "boot from a local-disk" option enabled keeps booting an old kernel ignoring changes. I want to boot 4.18.0-147.8.1.el8_1.x86_64 kernel, and here is what I'...
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1answer
81 views

DELL r630 + NvMe M.2->PCie : Cannot boot Ubuntu installed on M.2 NvMe drive via. PCie adapter

I have plugged in a PNY XLR8 500GB M.2 NvMe drive in a Delock PCIe card and stuck it in Riser 3 on my Poweredge r630 - Although the drive doesn't show up anywhere in BIOS, I could boot the Ubuntu ...
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456 views

Booting a squashed filesystem from ISO

I am trying to create a UEFI bootable CD ISO with a squashed filesystem from a virtual machine, which I provisioned with the stuff I need. To explain: I use packer and a kickstart file to install ...
2
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1answer
24 views

Dual boot - Windows shows picker instead of starting

I have laptop with dual boot: Debian and Windows 10. Recently I had some major issues with Windows so I decided to reinstal it from scratch. I created USB stick, formatted partition with Windows and ...
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60 views

How do I correctly SysPrep Gen2 Hyper-V image or fix the one I'm working with?

My goal was to create a Win10 image (with programs installed) that I could quickly copy and reuse on Hyper-V for testing things. I created a Gen2 image, installed Win10+apps, then SysPrep'd and shut ...
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103 views

SCO OS 6 Driver for LSIL SAS1064E Raid Controller

A client has an SCO OpenServer Server 6.0, that is running on an HP ProLiant Box and they lost the root password. Its equipped with a Doal-Core Intel Pentium Processor. They don't have any media or ...
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141 views

How to boot FreeBSD-11 over serial console?

I'm trying to capture dmesg output from a kernel, that's crashing at boot. Setting console=comconsole on boot's command line works -- I see the OK prompt on the serial console. I then enter -- on the ...
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1answer
68 views

change boot order gub ubuntu server

I have installed ubuntu server 18.04 on a dedicated server. The problem is i would like to have btrfs for the whole disk ( 1to ), but the web manager don't propose me the option to do so on ...
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63 views

Editing /boot/grub/grub.conf not recommended - yet how do you then change entries?

For example, our /boot/grub/grub.conf looks like this: ## ## End Default Options ## title Debian GNU/Linux, kernel 3.2.0-4-amd64 root (hd0,0) kernel /boot/vmlinuz-3.2.0-...
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1answer
183 views

GRUB2 Not Loading from MBR

I have a new computer that I have imaged using PXE. It loads a kernel, initrd and verifies if it needs to apply an image. If it does, it goes through some logic of partitioning (BIOS, non-GPT) the ...
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2answers
826 views

I deleted all the contents of /boot and now server is not booting

I did something stupid. My thinking was that /boot directory is empty and contents come to /boot each time the computer starts. My /boot drive was giving me error messages no space left so I thought ...
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676 views

How to reinstall boot loader on FreeBSD?

I'm planning to use rsync to clone an entire FreeBSD server to another machine, overwriting the files of the existing old FreeBSD OS (minus /etc/hostid and a few others) But that would break the boot ...
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2answers
746 views

PXE boot from an other Network

so i got an problem. I set up an Router with Debian9, its task is that Clients in the Network are able to boot from an PXE Server( the PXE Server is on an other Network) I heard sth. about IP-Helper ...
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1answer
362 views

How big is grub2?

Due to "Meltdown" I am in the progress of moving our CentOS7-XEN-PV-DomUs to HVM mode. See here on why I need to migrate to HVM This involves installing a bootloader - unnessesary on PV-DomUs, since ...
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706 views

BTX halted error on FreeBSD

I understand there are a few threads about this out there but my issue seems particular. Recently my boot disk, an SSD, failed and I have just rebuilt it. Given the opportunity, I thought I might go ...
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202 views

How to diagnose why Grub won't boot a Windows partition?

I just imaged a Windows partition onto a new drive with dd. Then I changed the NTFS UUID to a new one. Then I ran update-grub (using grub2) and restarted. Now there is a new menu entry in the Grub ...
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604 views

Problems with grub with our RAID10 Ubuntu installation

We have a Dell PowerEdge R730xd with 24 SSDs of 500GB each. We need to install Ubuntu 14.04 LTS on this machine, and use it as a database (postgresql). Our RAID controller is an Avago MEGARAID, and ...
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1answer
578 views

What is the difference in restricting single user mode with password through /etc/sysconfig/init and /etc/inittab in a Linux system?

I was checking some sites for setting password protection in single user mode login in my Linux server (Oracle Enterprise Linux-OEL) . In some places I saw the steps to add entry into inititab file ...
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1answer
881 views

How do I extract the initrd when the usual cpio -i -m produces gibberish?

I am attempting to follow the instructions here https://superuser.com/questions/1134160/how-to-get-old-linux-versions-to-boot-after-p2v-on-vmware for getting another P2Vd old Linux system to boot, but ...
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2answers
9k views

WDS Server - How does DHCP scope option 67 work?

What is the purpose of DHCP option 67? I thought the PXE client will look for a boot.wim file. Does the boot file located in 67 (like boot\x64\wdsnbp.com) go out and search for the boot.wim? What ...
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1answer
307 views

Configure RAID1 to boot from other disk if first one fails

I have Centos 6.7 running on 2 SSD disk in RAID1. The boot loader is installed only on /dev/sdb so in case it fails I won't be able to boot the system from /dev/sda Is there a safe way to ...
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2answers
2k views

Centos grub bootloader missing after installing windows 10 [closed]

I first installed CentOS 7 on my laptop, 2nd I installed Windows 10 in same hard disk with different partition, but I couldn't get my Centos 7 info in windows boot loader. I tried easyBCD tool to get ...
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1answer
1k views

Kernel upgrade with EXTLINUX on Debian

I would like to upgrade the Debian stock kernel to a compiled kernel packed as a .deb package. Running the: dpkg -i linux-image-x.x.Custom_amd64.deb triggers the grub-update and, as I see from ...
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1answer
2k views

Bootloader password - existing content found in /etc/grub.d/01_users

I need to set a bootloader password and am apprehensive about changing the existing config (per warning about potentially making a system unbootable). RH documentation says to add the following lines:...
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1answer
366 views

Setting bootloader password in EL7

Using this guide I am attempting to add a bootloader password to a CentOS7 install. When prompted, enter the password that was selected and insert the returned password hash into the appropriate ...
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2answers
852 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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2answers
218 views

System refuses to boot RHEL DVD, but will boot other distos

I'm trying to install RHEL7 on a Dell R210. The system was RHEL5, but had shred run against its disk. I tried booting a DVD with the RHEL7 installer, but got nothing, it would not boot. I've ...
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2answers
637 views

EXTLINUX warns to install grub

While doing apt-get dist-upgrade on a Debian GNU/Linux Jessie EXTLINUX warned me that now was mandatory to install grub. The system was installed after an image not done by me: is it safe to ignore ...
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1answer
407 views

How to save output from grub-md5-crypt to a file ?

I am using Cent OS 6.5 and I want to save the generated output and md5 hash from grub-md5-crypt command to a file. The grub-md5-crypt command asks us to set a password. I want the password(which I ...
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2answers
1k views

Unable to boot into software RAID1 after disk failure

Today after restarting my data server I was unable to boot because one of the drives wasn't being recognized any more, it is still spinning when I connect it and not making many weird noises except ...
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1answer
6k views

How to fix when grub no longer mounts the boot partition at start up?

This system has a boot partition on a dm-raid device. I updated the system by standard methods from an older Ubuntu to the latest LTS. Now, if the kernel is updated by "apt-get upgrade", the new ...
2
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1answer
799 views

Win2K P2V on XenServer 6.2: VM unable to start

I'm trying to virtualize (P2V) a very old Win2K server (an IBM x345) with related storage: a main C: drive, running on top of a RAID 5 logical-array served by an internal ServeRAID HW controller and ...
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1answer
389 views

Debian server not booting after software RAID-1 array degraded

So I have a Debian 7 server with 3 hard drives. Its RAID-1 is basically configured this way: md0: sda1, sdb1 --> / (root) md1: sda5, sdc1 + sdb5 (spare) --> /data (sdc1 is on a SSD, and sda5 is ...
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283 views

Verify architecture of kernel file

Note: I am NOT interested in the currently running kernel, but on a kernel that I am going to boot and which is in a file in the filesystem. I am going to boot a new kernel. I have prepared grub.conf ...
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1answer
633 views

Where to install GRUB 2 boot loader?

I have: sda and sdb which partitions is forming mirror RAID md0 md1 md2 md3 During update process, I was prompted where to install GRUB boot loader - on sda, sdb, md's or all together? What choice ...
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1answer
155 views

Did grub updating bring my server down?

I have an Ubuntu 12.04 server. Last night I installed a few updates using apt-get dist-upgrade, including grub, and rebooted. After rebooting, I couldn't boot into Ubuntu. I just get a big flashing ...
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1answer
1k views

Can't boot VM after P2V or ghost - Linux 2.6

I got this old machine that runs on a p2 400 and a Linux Debian 3.1 with kernel 2.6.8 and since it has modified binaries due to internal undocumented changes in the code, migrating off manually isn't ...
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1answer
441 views

Windows 7 boot manager not localized on UEFI systems

I originally posted this on SuperUser because I discovered this behaviour on my home computer, but this seems to be a general issue on UEFI systems, thus I'm posting here too; I also hope someone here ...
2
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1answer
2k views

Kernel panic - not syncing: VFS: Unable to mount root

I uploaded a centos 6.2 VMDK to s3 and then converted it to volume using ec2 import volume. Then i took the snapshot of the volume and deleted it.Now I am trying to create a instance from the snapshot ...
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1answer
668 views

FreeBSD Disable Serial Console from Bootloader?

I have a FreeBSD appliance (meaning I can't open the case or I will void the warranty) that was working well until I accidentally clicked 'Enable Serial Console' and rebooted... I went to plug in my ...
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1answer
1k views

An Error Occurred Installing Boot Loader (SLES 10.1)

I am trying to install SLES (SuSE Linux Enterprise Server) SP 1 onto a server but I'm having an issue with the bootloader. I go through the install, more a less default options except Gnome Desktop ...
2
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1answer
972 views

Solaris 11.1 x86 won't boot, verifying DMI Pool. How to install or verify boot blocks

x86 Solaris 11.1 had a mirrored ZFS root pool (rpool) which was 2x 320GB disks, I detached one and replaced with a 500GB disk which resilvered ok so ran the "bootadm install-bootloader" and did the ...
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1answer
534 views

I'm stuck on choosing the right Linux bootloader for software RAID-10

I'm installing Gentoo on a SOHO server with 4 500GB Hitachi hard drives. I was able to boot from Live USB, created RAID-10 array /dev/md0 with the following command: mdadm --create /dev/md0 --assume-...
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1answer
118 views

Install Ubuntu on a separate hard drive? [closed]

I am running Windows 7. I would like to dual-boot Ubuntu, but minimize risk of something going wrong. In the past I have encountered an issue with the bootloader getting corrupted and having to ...
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1answer
1k views

PXE boot linux and windows

Here is the scenario: I have 3 machines connected to the network thru a switch: one is the server that can act as the tftp server, switch has the DHCP server and other 2 machines needs OS to be ...
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2answers
733 views

using Linux as a bootloader?

I have an embedded device with a SPI connected flash. Basically this means the device boots its bootloader and Linux kernel from a small flash part. As the device boots, but before the root ...
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3answers
13k views

Is there a Linux kernel boot parameter to configure an IPv6 address?

I know there is a parameter named ip which lets you configure IPv4 addresses on the Linux kernel through the boot loader. That looks like the following: ip=192.0.2.1::192.0.2.62:255.255.255.192::eth0:...