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

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3
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0answers
53 views

Expanding root partition CentOS 6 With using fdisk

I am trying to expand the root partition on a VM which is not using LVM and I do not have (nor want to try and create then use) a disk to boot from. As such I followed what I felt was the logical ...
3
votes
1answer
50 views

Difference in execution of init with embedded vs. external initramfs?

I'm building a very minimal linux system that just consists of the kernel (v4.1-rc5) and an initramfs populated with busybox (v1.23.2). It works fine for the most part, but I observe a difference in ...
0
votes
0answers
47 views

How to boot from USB on Debian?

So I did a minimal install of debian jessie (without X) and now I am trying to boot linux mint USB install which I made with Unetbootin. It doesn't boot the install and pressing F12 only gives me BIOS ...
0
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0answers
221 views

fresh centos 7.1 install continually boots into “emergency mode”

I installed centos 7.1 on bare metal (dual boot with windows), with encrypted disk. Installed a few things (oracle java) and did a full yum update Now the system keeps booting to a console emergency ...
2
votes
1answer
151 views

Debian jessie without desktop

So, I installed debian Jessie on my computer. And it does not have any desktop. I have used numerous of different commands but it just say cannot be found. Thanks for the help. EDIT! One way to fix ...
0
votes
0answers
37 views

Arch very long boot-time after kernel downgrade

I just downgraded my arch kernel from 4.x to 3.17.x for the sake of being able to use shared folders feature in vmware. Right now, everything is fine and it boots up too. But boot-time has greatly ...
1
vote
0answers
134 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 ...
2
votes
0answers
27 views

What is the systemd equvalent to sysvinit 'X-Start-Before'?

Quoted from https://wiki.debian.org/LSBInitScripts. X-Start-Before: boot_facility_1 [boot_facility_2...] X-Stop-After: boot_facility_1 [boot_facility_2...] provide reverse dependencies, ...
0
votes
1answer
99 views

CentOS 7 - while installing i set disk encrypted with password, but on reboot always it asking password

While installing CentOS 7, i put password for disk encrypt. Now while working remotely on that machine and doing reboot it always ask password to be inserted on-site. Is this normal? or there is a ...
0
votes
2answers
461 views

help needed with elementary OS dual boot with windows 7

previously my laptop was having two partition, C and D. On C:\ i had windows 7 install. I wanted to make a dual boot system with Elementary OS Freya. Hence i made a separate 6 GB EXT3 partition ...
0
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1answer
87 views

Filesystems not mounting on boot?

I'm getting this error after rebooting: Scanning for Btrfs filesystems * Stopping Read required files in advance [ OK ] * Starting Mount filesystems on boot ...
0
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0answers
30 views

Arch hangs before opening login screen

I tried installing gummiboot, and I eventually got it to work, but now Arch can't boot into X--the last few messages I get are about it stopping Plymouth and preparing to open Gnome Display Manager, ...
2
votes
0answers
50 views

Sound Problem in ubuntu startup

When Ubuntu boots first time, no sound comes out of speakers. But when I insert any headphone the sound is OK. also when I insert headphone first time and eject it from laptop then sound comes fine ...
0
votes
1answer
32 views

ignore failing, non-OS drives?

Context: Remotely located machine with desktop ubuntu 12.04, 2 data drives, 1 OS drive, all specified in /etc/fstab. Issue: During boot one SATA data drive does not respond, and machine will not ...
0
votes
0answers
56 views

Filesystem check or mount failed on elementaryOS Freya

I had to move to a temporary workspace for a short time which runs on very bad hardwares, so I bought an SSD trying to speed it up. Now, I have installed elementaryOS Freya and my development ...
0
votes
0answers
162 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 ...
1
vote
1answer
68 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 ...
1
vote
0answers
24 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. ...
2
votes
0answers
156 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 ...
0
votes
0answers
23 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 ...
0
votes
0answers
22 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 ...
2
votes
1answer
112 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
vote
1answer
310 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 ...
0
votes
0answers
21 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 ...
0
votes
0answers
63 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
vote
2answers
129 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
vote
1answer
55 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
votes
1answer
29 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
votes
1answer
72 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 ...
1
vote
1answer
53 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 ...
1
vote
1answer
200 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, ...
2
votes
2answers
224 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
votes
1answer
75 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
votes
1answer
45 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
1
vote
1answer
21 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 ...
1
vote
1answer
55 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 ...
1
vote
0answers
35 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 ...
0
votes
0answers
130 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
votes
4answers
606 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 ...
0
votes
0answers
9 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
votes
0answers
109 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
votes
0answers
107 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 ...
0
votes
0answers
17 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 ...
1
vote
0answers
268 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 ...
0
votes
0answers
136 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 ...
0
votes
0answers
49 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
votes
1answer
57 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?
0
votes
0answers
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
votes
1answer
65 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, ...
1
vote
2answers
114 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 ...