Bootloader issues: what happens before the operating system itself starts.

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31 views

Grub2 fails to load on an AMD cpu

I have built a linux image with GRUB2 as its boot loader and written it on an IDE hard disk. When I put it in a computer with Intel cpu, it works fine. But putting it in an AMD cpu computer, it even ...
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23 views

How to chainload from usermode?

Starting from user mode runlevel in linux, is it possible to boot another OS on the system without ever passing through BIOS or GRUB/similar and never turning off?
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299 views

Manjaro Laptop suddenly won't boot Xfce desktop environment. How to boot up normally?

My Manjaro Linux laptop suddenly won’t boot up my Xfce desktop environment. When I start the computer, the PC: boots pass GRUB, then quickly flashes this message: [0.029878] Ignoring BGRT: invalid ...
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16 views

Unable to set luminosty with a usb boot

When I boot from a live USB I can't adjust luminosity. I need to plug a VGA screen to my laptop in order to be able to see the screen. I managed to fix that when I installed Ubuntu with the ...
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75 views

Where do these boot log entries come from and who creates them?

I'm wondering what kind of code writes these first two lines into /var/log/syslog while booting my machine: Aug 4 10:13:48 HOSTNAME kernel: imklog 5.8.11, log source = /proc/kmsg started. Aug 4 ...
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77 views

Installing a bootloader on a mac

Due to a somewhat odd requirement for a particular linux installation, with a particular software suite, I found it best to use ddrescue to populate the harddrive with the partitions and their data. ...
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54 views

How to get the values for “set root” in menuentry while setting password for GRUB2 on CentOS 7

I need to disable single user mode on my servers running CentOS 7. I read the RedHat documentation on what goes to /etc/grub.d/40_custom and how to encrypt the password and all but one details makes ...
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86 views

Live USB - Tails tries to boot but ends up booting into Kali Linux

I have a bootable USB drive with Tails and Kali Linux on it, among others. Kali boots fine. However when I try to load Tails, it manages to get past the Tails loading screen but then the Kali logo ...
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128 views

Getting “No DEFAULT or UI configuration directive found” when booting from USB

I made a bootable Freya-OS USB. It works fine in my laptop. But, when I am trying to boot my desktop from the USB, it shows this error: "No DEFAULT or UI configuration directive found". Syslinux ...
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43 views

Boot live img files in grub

I've compiled a purely 32-bit version of Android that I'm attempting to boot on a device with a 32 bit UEFI. How the heck do I configure GRUB2 to load a live img file? The image file contains the ...
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627 views

saving file to usb stick while using linux boot stick

I am using the instructions in this youtube video to install CentOS 7 on a new computer that is running Windows 8. The tutorial uses UniversalUSBInstaller from PenDriveLinux, but the installation is ...
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193 views

how to make GRUB find modules on multiboot Linux LiveUSB?

background (skip to header=problem if you're expert on LiveUSBs, ISOs, GRUB2, etc) I'm setting up a multiboot/multiISO Linux LiveUSB as detailed here, which I intend for use on multiple hosts (i.e., ...
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864 views

how to make LVMs at available boot? kernel panic - dracut cannot find logical volumes after kernel upgrade in CentOS 6.6

I have a centoOS 6.6 vmware vm that I ran yum update on which upgraded the kernel after reboot, I started getting this: dracut Warning: No root device "block:/dev/vg_myhost/lv_root" found dracut ...
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37 views

What can cause GRUB2 to suddenly not be recognized by EFI?

I have two hard drives in my PC. The first one contains an ext4 partition with Debian, a swap partition and the EFI partition for Debian. The second hard drive contains Win8 and it's EFI partition. ...
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636 views

“Error uncleared PCH FIFO underrun on transcoder A” during boot centos 7 on toshiba

I have toshiba Satelite model (C50 1001C model number) laptop. When I start it is giving 1.643361 [drm:cpt_serr_int_handler] *ERROR* uncleared PCH FIFO underrun on transcoder A 1.643363 [drm ...
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122 views

Can't see boot options or log with GRUB through serial-over-lan

I have a Debian system that is unable to boot a configuration I want. I don't have physical access to it, but I have serial-over-LAN access via Dell's BMC (so very limited), IPMI 1.5/isol. When I boot ...
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43 views

Plugged mouse increases boot time

I was going through the output of dmesg -e and found that my logitech mouse is increasing boot time by around 7 seconds and my total boot time is around 45 seconds. [ +7.334661] usb 1-1: new ...
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126 views

error: cant't find command linux when booting system

I need some help with a problem when booting. Recently I've installed CentOS 7 on my pc, previously I had debian 7 and manjaro installed. When I installed manjaro I overwrote the bootloader of debian ...
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73 views

how can i assemble my components (kernel, initramfs, rootfs) into a single bootable image?

I have created a compressed rootfs, kernel, and initramfs. I have a syslinux configuration that boots my rootfs/kernel to RAM. It works. However, I'd like to have something like image1 which ...
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167 views

Convert BIOS booting to UEFI in existed linux installation

I have debian installed on HDD with GPT partition table. But it installed with BIOS compatible mode. Now I want to boot it from native UEFI. How can I do this? Ofcource I have motherboard with UEFI.
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95 views

Keyboard merely plugged in greatly increases kernel boot time

Specs are here. I am using a K65 RGB. I am using the ckb-git package from the AUR to provide basic input functionality. With Keyboard and with driver: Startup finished in 3.100s (firmware) + ...
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198 views

Kali startx prompting GUI login after logging in already

I wanted to revert back to logging in by command line and starting the desktop by startx. I disabled gmd3 using chkconfig --del gdm3 and I was given the traditional way of logging in which worked ...
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95 views

aufs fs is being mounted before component parts

I'm having issues at boot time. It fails to mount the aufs (and so suspends the boot asking if I want to continue... no good on a server) I thought I had set up my fstab to mount the aufs AFTER the ...
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78 views

Grub2 don't see my second HDD

When the new distro is installed it makes grub2 boot menu, but it does not consider my second HDD where I have Windows7. So I tried to edit grubs cfg file but with no success. Also tried to insert ...
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20 views

Can I capture reboot errors on a system that lives in memory?

I have a machine that will intermittently experience boot issues and the system will hang and won't come up. I would normally go to check dmesg, but the problem is the system lives in memory and gets ...
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64 views

Linux Networking Bootup script takes too long

I am working with a fork of a raspberry pi SoC. One of the modification is the use of AP6210 WiFi/Bluetooth chip. I am running Debian. During boot up, the following 3 startup scripts need to run in ...
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153 views

grub2 lvm2 raid1 /boot

Is it possible to boot from a system where /boot is located within an lvm2 raid1 partition. I've tried a variety of configurations, but I have yet to discover how to do it. I am using two 2TB disks. ...
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274 views

Booting Linux from RAM

I want to find a cross-distro solution for setting linux up to boot from RAM. What this involves in essence would be copying an existing installation of linux one way or another over to the RAM (to ...
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66 views

What is the first event/file/log in linux that appears/changes on boot that signalizes network being up?

I have a vSphere farm with virtual machines and python script that handles cloning and managing of those VMs. I also have a machine (RedHat 6) that I clone if I need a new one. It has a script that ...
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109 views

Kernel loglevel and console manipulation

I want to have two console kernel arguments, one /dev/tty2 for screen and one /dev/ttyAM0 for serial debugging. I can achieve that simply with: console=ttyAM0,115200 console=tty2 I want /dev/ttyAM0 ...
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274 views

How to run TOR on boot instead using Vidalia?

I am new to TOR and I really have a hard time understanding how to set it up. What I did so far: run Vidalia from my personal account -- after few seconds I am connected run Vidalia from root ...
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393 views

Arch Linux boot failure: Fsck check on LVM /var mount fails

I recently installed Arch Linux on an older laptop that I am using as a personal workstation and machine to better learn how to administer Linux. I have a persistent boot failure that has started ...
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39 views

Dual-boot ends with Dual-Bootloaders

Having just bought a new laptop out of necessity, and ending up with Windows 8.1, because I work from home and the company only supports windows, and the identical 7 machine was almost $100 more than ...
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67 views

FreeBSD disk decrypt/mount order

TL;DR — Is there a way to force certain GEOM encrypted drives to be attached and mounted before other drives are attached in FreeBSD 10.1? I have a machine running FreeBSD 10.1 with two drives for ...
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541 views

Fedora 21 won't boot anymore; Computer wants me to perform MOK management

I have Fedora 21 installed. Last time it booted, I changed Gnome theme. Then I restarted and now I get following: If I select to continue boot, computer restarts and I get this window again. If I ...
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708 views

OpenSUSE 13.1 Cannot Find a Bootable Device After Update

I have just installed OpenSUSE 13.1 on a computer. After that, I did a zypper update and a reboot and the computer would not boot. The error message was something like "no bootable device found". I ...
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651 views

Kali linux throws ' isolinux.bin missing or corrupt ' error using USB 3.0

I'm having the same problem as this question, with a Live USB Kali Linux with Encrypted Persistence. I've downloaded kali-linux-1.0.9a-amd64.iso from the www.kali.org for my 64bit machine. And I've ...
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976 views

Cannot add startup service to openWRT from init.d

I have openWrt installed on a TP-Link TL-WA901N/ND v3. I don't have luci package installed because I don't have enough space, so I can only do thing via cli. What I'm trying to achieve is to create a ...
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457 views

Centos 7 - Encrypted installation won't boot

I installed CentOS 7 netinstall (minimal installation) on a VServer with the following partitions: /boot - 200MB - XFS / - 50GB - XFS Encrypted swap - 512MB - swap Encrypted I ...
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689 views

No volume groups found after restoring CentOS image to VirtualBox VM

I used Clonezilla to backup an HP Proliant server running CentOS 5.10. I restored the image to a VirtualBox VM but when I try to boot I get an error of "No volume groups found" "Volume Group ...
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28 views

Read pre-grub2 error messages

Grub2 displays an error message followed immediately by the menu. Without a high speed camera there is no way to read the message. Is there any way to see the error messages that grub2 displays before ...
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236 views

Multiple Windows 7 installations from Grub

I have the following disk configuration: Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors Units = sectors of 1 * 512 = 512 bytes ...
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161 views

xubuntu (main HD) and Kali (second HD) both LVM encrypted but Kali won't appear in grub?

/dev/sda = xubuntu 14.04 Trusty Tahr /dev/sdb = Kali Linux /dev/sdc = Windows 7 Ultimate I installed xubuntu with grub, and Kali without. Both are luks-encrypted drives with LVM. Kali doesn't show ...
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54 views

Get log from kernel while loading

There is a arm/omap2-based device without ethernet, UART ports. It has usb connection with host, numeric keyaboard, LCD display. There is working U-Boot and kernel images for this. I'm trying to ...
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307 views

Metin2 server on FreeBSD error

I have private metin2 server on FreeBSD 9.1 32 bit and I installed packet filter PF. In pf.conf, I wrote metin2 ports (open for public) and my IP Which can be connected to the server. Everything is ...
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25 views

New menu item called “arch_grub” emerged as a temporary boot device

I have Ubuntu installed along with Arch. I re-installed Arch a few times already. Now it works well. Once when I was re-installing Arch during boot when I chose the "Choose temporary boot devise" ...
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126 views

Errors dual booting Ubuntu Studio 13.10 and Windows XP Pro x64 using GRUB 2

Getting the following errors when I try to boot Windows XP Professional x64 Edition (on /dev/sda1) using GRUB 2: error: no such device: A8542EOA542DDC36. error: invalid signature. I originally had ...
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146 views

Debian Wheezy Losing video link on boot

I bought a small Intel Atom machine (Intel atom D525) and I've installed Debian Wheezy on it. After I install (successfully) the OS (via USB) the machine boots and after a couple of seconds I lose ...
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255 views

weird problem with 64 bit install and memory

I have a laptop with 8gb of RAM in two 4Gb slots, the processor is 64 bit compatible. However when I try to install 64 bit version of Linux (I tried, mint, arch, manjaro), it refuses to load the ...
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8k views

stuck at grub rescue on boot, no bios, no live cd, ls returns hd0

I have an external hard drive with elementary os on it, and when I took it out my preinstalled windows 8 laptop, it came up with the "error: no such device:'hex number' grub rescue>". I can't boot ...