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

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19 views

“Kernel panic – not syncing: VFS: Unable to mount root fs on unknown-block” and “LZMA data is corrupt”

I recently bought a new computer and I am experiencing problems while trying to install Linux. Things I have tried: A variety of distributions: Ubuntu; Elementary OS; Crunchbang++; Manjaro; and ...
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1answer
30 views

Can you uncompress a btrfs filesystem?

I found out that you can compress the whole of a Btrfs filesystem by defragmenting it with -clzo or -czlib, but is it possible to uncompress it again? I'm asking because I managed to stop my system ...
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0answers
18 views

Ubuntu Works on “Upstart” But not a Normal Boot. How to fix? [on hold]

How do I get Ubuntu to boot normally without having to use the "upstart" option? I've had a stable Ubuntu install running for quite some time now, but since 15.04 it only boots up stable when I do ...
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0answers
12 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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1answer
26 views

yaboot: How to load Debian8 netboot installation images directly from the boot: prompt?

I have an iBook G4 and have Debian 8 (Jessie) installed on it. Yesterday I did something stupid (messed up yaboot.conf and ran ybin) and now the system cannot boot up. The old Debian 8 was installed ...
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0answers
20 views

How to clean up bootloaders & UEFI entries from other installs?

I got a new Windows laptop, and I wanted to dual boot with Linux. I installed Fedora, before changing my mind and going back to Mint. I'd like to keep Win 8.1 and Mint. However, now my UEFI boot menu ...
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0answers
12 views

How do I to dual boot Kali and Backtrack?

I have backtrack 5 r3 installed on my laptop which has 60 gb single hard disk. my backtrack is fully set up and takes the full 60gb space. Now I want to keep the same backtrack with all my settings ...
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17 views

Script requesting information upon boot

The idea is to create a script that runs as root upon boot (either before a potential X or GDM starts or after). The challenge is that this script needs input from "the one at the keyboard" - without ...
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0answers
21 views

exchange from Manjaro to Ubuntu [closed]

i have a big problem now i had deleted previous windows and Ubuntu and formatted my hard of the laptop now i already installed Manjaro but want to change it to ubuntu i tried to make boot usb by the ...
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0answers
26 views

NFS root filesystem doesn't mount at boot

This is an embedded device with a custom kernel (see below for relevant config). It's an x86-32 machine booting like this: coreboot->uboot->linux. I can mount the NFS share in linux if I use ...
1
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1answer
42 views

systemd waiting too long for network at Debian 8.0 Jessie's boot

My system has booted up relatively fast while run Debian 7 Wheezy, but after upgrade to Debian 8 Jessie, and therefore SysVinit to systemd, it became a way, way slower. The thing, slowing down the ...
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17 views

memtest86+ doesn't show up in grub

According to my package manager memtest is installed and both memtest68+.elf and memtest86+.bin are in my boot partition yet grub doesn't give me the option to boot to them. Is there anyway to add the ...
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0answers
23 views

Debian change runlevel during boot

I've read lots and understand changing runlevel defaults and during runtime, but how can I change runlevel during the boot up of a Debian server? Background: XenServer virtual machine Debian Server. ...
1
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1answer
49 views

Writing openSUSE image to SD card

I am releatively new to linux and I have assembled a raspberry PI 2 model B and I'm relavively unexperience with linux. I have tinkered in the past with SUSE and want to start doing it again. I have ...
1
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1answer
17 views

RHEL not booting with the updated kernel after upgrade [closed]

We have recently upgraded RHEL boxes, but the system only booted with the old kernel. Observation is that there is no link /etc/grub.conf to /boot/grub/grub.conf. Now, to boot the system with the new ...
3
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1answer
15 views

How to distinguish if a systemd unit is run by apt-get or during boot?

Can one somehow distinguish if, a) the daemon was started during boot or, b) (re)started by an apt-get install or upgrade? Can this be distinguished from within the daemon itself? The use case is ...
2
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1answer
23 views

How to use GRUB from a USB drive to boot any OS that is on the HDD?

I got two operating systems on my laptop(Win 8.1 and Kali), but i updated from win 7 and deleted the boot record. To be honest i don't want Grub on my HDD, i like booting directly into windows. My ...
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1answer
30 views

debian services not running

After an unexpected restart my debian machine is booting up to a terminal screen instead of gui. I'm not sure what to do to diagnose the problem.. but I've noticed that all of the services in ...
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0answers
21 views

Why does Linux hang up at turn on?

I persuade my wife to use Linux (Fedora 20) on her laptop by claiming, among the other reasons, that it boots up at power on much faster than Windoze. Lately however it tends to hang up sometimes, ...
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0answers
63 views

Unable to delete boot entries using efibootmgr

This used to work in the past but since recently deleting entries with efibootmgr fails with return value 15. Changing the boot order fails as well. However, creating new entries does succeed, ...
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0answers
28 views

Debian 8 KVM Guest - Loading initial ramdisk

I have updated my KVM management script for Ubuntu 14.04 KVM hosts to support debian 8 guests. After a manual installation (preseed script does not work yet), I am stuck with the the following message ...
0
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1answer
29 views

Boot Linux (Debian) from a USB Drive with GRUB

I would like to install Debian on a USB drive and boot it from there. I have a USB drive with 64 GB of diskspace. So I installed Debian Jessie (non-free) on it, and installed GRUB on the USB drive ...
3
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1answer
35 views

is mount command a user space command or kernel command

as I understand, most of linux command are user space. but at boot time the system mount its root file system using mount command. so is this command implemented within the kernel
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1answer
12 views

Booting into VNCViewer on a Raspberry Pi.

Here's my problem. I'm new to Linux scripting and RasPi and I am beating my head against the wall on an issue. I want to use this raspi for displaying a vm using VNC. I got VNC installed. Created a ...
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1answer
20 views

grub2 command line loaded instead ubuntu os

I have a strange problem. After installing ubuntu on usb stick (at already installed ubuntu computer), after removing usb stick with installed ubuntu from computer I get the trouble: after booting to ...
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0answers
32 views

Show kernel parameters passed to init [duplicate]

I learned that if the kernel does not understand a parameter, it saves it and passes it to init when performing the user space start. While e.g. in show parameters of running kernel or How to display ...
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0answers
27 views

Why does newer version of Ubuntu and Linux Mint hang after install and which is the best alternative?

I am trying to install either Ubuntu (Ubuntu 14.04.2 LTS) or Linux Mint (Linux Mint 17.1 Rebecca) in my Desktop. I downloaded installer images multiple times and tried to install in my system. Every ...
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0answers
50 views

Linux Clean Installation ERROR IN BOOT: “Reboot and select proper boot device or insert boot media in selected boot device”

After installing a clean copy of linux elementary os. It shows me "Reboot and select proper boot device or insert boot media in selected boot device". I'm using a laptop and previously I was running ...
4
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4answers
336 views

Is /etc/rc.local a good place to run a script before any (normal) user can log in?

I have a Ubuntu 14.04 Server which, during boot, should sync some stuff over the network before any normal user can log in (over ssh). I was wondering whether calling the script from /etc/rc.local is ...
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0answers
7 views

Fedora 16 only boots after manual drive selection [closed]

A colleague of mine recently tried to setup a RAID 1 on our Fedora 16 machine via the Disk Utiliser menu, even since then (even after tearing the raid down and removing all HDDs but the boot drive), ...
2
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0answers
24 views

Setting the EFI Framebuffer's Resolution during boot

I've got a MSI WD-60 laptop running Gentoo. It has one of those 3840x2160 screens so I've had to setup Gnome/Firefox/IntellJ to double their DPI for anything to be readable. It all works fine except ...
2
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0answers
64 views

Black Screen Booting Into Linux Mint (On Dual Boot Machine w/SLI + 2 Monitors)

I'm currently dual booting Linux Mint and Windows 8 on a machine with dual ASUS nVidia GTX 770s running in SLI (on an ASUS Z97-Deluxe motherboard). Everything works fine on the Windows side, but when ...
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0answers
15 views

Filesytem errors during boot

I am using OMAPL138 and kernel version 2.6.37 and I would like to improve the boot time of my system. I made some progress on this, but I still have some errors which may be causing delay in the boot ...
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0answers
113 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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0answers
46 views

Toshiba Satellite Laptop Won't Boot to USB

My laptop model is Toshiba Satellite L655-S5153 I have my bios setup to boot usb (and yes it does read the USB drive), cd, then hdd. Legacy mode is enabled as well. I already have Elementary OS ...
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0answers
32 views

can I boot ext4 usb stick with xubuntu on from a Mac laptop?

is there a way to boot my ext4 formatted "xubuntu" USB memory stick from a Mac laptop? The laptop can identify FAT32 usb memory sticks with ubuntu at boot time, but it cannot identify mine, which is ...
0
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1answer
33 views

black screen on boot for more than 30 seconds

I am on Ubuntu 15.04, I get normal boot animation but after that and before I can see my desktop wallpaper I get black screen for more than 30 seconds. Can someone help me out here?
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11 views

is it possible to make /boot partition after installing linux distribution

I right now I have 3 partitions: one each for UEFI firmware, swap and the root partition.I was wondering if it is possible to make new partition in which I can put /boot in my case after installing ...
4
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1answer
31 views

How to detect if USB device is bootable in udev?

I'm trying to write a udev rule to not mount USB devices plugged into my system if they're bootable, but I don't know how to specify in udev if a device is bootable in a rule. Is that possible? If so, ...
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2answers
38 views

Why it is not recommended to put boot partition on lvm?

I read somewhere that it is not recommended to put boot partition on lvm based partition. But, I'm doing it anyway. Then the only problem I've faced on this is sometimes when I install a new Linux ...
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0answers
41 views

Error while Booting from USB in vitualbox from linux host machine (process:9494): GConf-WARNING

My host machine is linux mint. I was configuring to boot from usb in virtualbox. i run below commands: $mount In my case USB drive is /dev/sdb1 so i run: $ umount /dev/sdb1 create directory with ...
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0answers
113 views

Grub - boot debian iso file from ntfs partition and install it

I have problem installing debian directly from hard drive. Say, i have a logical partition /dev/sda5 and there is debian DVD iso file located in (hd0,5)/iso/debian-8.0.0-amd64-DVD-1.iso with initrd ...
1
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2answers
73 views

Creating a bootable OpenBSD Flashdrive

I've attempted to do dd if=install57.iso of=/dev/sdb. sdb is my flash drive. I've also tried with the install57.fs. When I try to boot from USB it says "Missing Operating System" Could anyone help? ...
1
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1answer
145 views

Installing Ubuntu 15.04 through Mint 17.1

I am currently using Mint 17.1 on a machine having both legacy BIOS and UEFI. Secure Boot is off. Mint is running on a fully encrypted physical partition and with swap partition is encrypted too. ...
0
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1answer
84 views

Uninstall Windows and Install Elementary Freya OS, cause unbootable OS

I've already uninstalled my Windows and installed Elementary Freya OS. But then my laptop won't reboot. It said "Reboot and select proper boot device ..." Here is the complete specification of my ...
2
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0answers
53 views

mdadm Software RAID1 with GPT on Debian 8.0 amd64 - Does not boot on disk removal [closed]

INTRO: I have spent countless days attaching/detaching MOLEX->SATA power cables, rebooting machines and trying hundreds of edits and commands. I am on the verge of desperation and desperately in need ...
3
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1answer
144 views

Which file in /proc gets read by the kernel during the boot up process?

Which file in /proc gets read by the kernel during the boot up process? This was a question on my LPIC 101 test that I think I might have answered wrong. I searched on google and some other places but ...
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1answer
27 views

How do I understand if an USB Ethernet adapter is compatible with a certain kernel version to use it to load kernel/filesystem?

I'm using an old kernel, 2.6.32, and I would like to boot the kernel over TFTP and mount the filesystem over NFS. Mounting the kernel over TFTP is a plus, but mounting the filesystem over NFS is a ...
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1answer
31 views

What changes my boot partition and how to prevent it?

As an another countermeasure against security threats I wrote a little script that computes MBR and boot checksum and then compare it to the old one. As long as the computer is running this is OK, but ...
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1answer
72 views

Unpacking of initramfs is very slow

I am trying to improve the kernel boot time of my device and I would like some help. I am using OMAPL138 with kernel version 2.6.37 and it takes about 50 seconds until the boot process is finished, ...