Questions about the bootup process in Ubuntu. Use this tag if you have trouble booting Ubuntu or you have questions about the bootup process.

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How to set MTU for autoconfigured interfaces

I have a computer that may have multiple network devices, which are only in some cases available. Currently all network devices are configured completely automatically. Now I need to set the MTU for ...
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62 views

System Updated to 3.13 Kernel that won't boot

Recently, I got a message that told me automatic updates to my hardware would end 8/07 and decided to update my system to the latest kernel version 3.13. I'm running Ubuntu 12.04 on some fairly old ...
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40 views

14.04 LTS 64 Bits booting trouble

When I try to boot Ubuntu, first I get the grub options and then I choose to boot. After this, the screen gets full of 1111111111111 and then continues to Ubuntu logo with some commands that are ...
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63 views

Grub2 cannot see my new external USB hard drive, but sees an older one

I am trying to boot Ubuntu-studio (current version) from a new Seagate 2TB expansion USB drive on an old system (PC) whose BIOS doesn't know how to boot from USB. No problems with either the install ...
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90 views

error while booting xubuntu 14.04

I get a message on the screen every time I load xubuntu 14.04 on my xp mini, which says: " Support for core revisions 0x17 and 0X18 disabled by module paron allhusupport=0. Try013.allhusupport=1. ...
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109 views

ubuntu 14.04 boot from san

I installed ubuntu 14.04 on iscsi target and after reboot i get grub rescue prombt after error Boot sector id not valid error: no such device : c098787-4839-34bh-3d4f-b3eef9i3j9f any advice ?
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10 views

Ubuntu Server with ubuntu desktop does not have boot record, but it did when it was just basic server

The title says it all. I started by installing "server" with the ubuntu desktop package, and when it finished and rebooted: nothing. It completed full installation, rebooted, and there was no boot ...
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24 views

iPlymouth Broke GRUB

I followed the steps in this thread: What happens if I disable and unistall Plymouth? Now GRUB is broken. I'm running Ubuntu 12.04.4 without a GUI and when my server boots now, I get a screen showing ...
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52 views

Dual boot. No boot option!

I just installed Ubuntu 14.04 from a live CD and when it was finished it restarted but didn't give me the option to boot Windows... Ubuntu booted automatic. I ran the command: sudo parted /dev/sda/ ...
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23 views

Grub Rescue command ls says failed reading section 0x0 from cd0

I had Ubuntu 12.* installed on my system. Then I tried installing Windows8, which failed. After starting my system I am getting Grub Rescue'' I did ls output:(cd0) then ls (cd0) output: failed ...
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186 views

Trouble installing Ubuntu via a bootable flash drive, created on Mac

My brother recently decided to build a computer, but I had the privilege to put it together and to download Ubuntu. I created a bootable drive, on my Mac, using the 64 bit version of Ubuntu. When that ...
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244 views

How to fix/install GRUB?

I'm facing a problem of not being able to boot into Linux. I get the "grub-rescue" crash (as the one mentioned here. But my problem is really very different. I don't have to /boot directory on my ...
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665 views

Hangs On or After fsck from util-linux 2.20.1

I have a box running at DigitalOcean with Ubuntu 12.04 It's rare that my system will boot or takes forever - normally it just hangs / chokes. A reboot from a remote shell used to be pretty quick and ...
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39 views

How can I automatically reboot machine after usb pull off?

I have this situation - I've got a boot-able pen-drive with Ubuntu 12.04 for automated installation - when I plug the USB stick in installation begins from it. At the end of installation process I ...
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33 views

Ubuntu bootloader issue

I've made Ubuntu 14.04 dual boot with Windows 8.1., but after installing Ubuntu everything is working well, but after 1-2 day(s), I don't see my boot option menu after powering on my system; it ...
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140 views

Windows 8 and Ubuntu 14.04 (Windows will not load - Loops prepairing to repair windows) Asus ROG G750JW

I have windows 8 on my first drive which is 1 TB and Ubuntu on the secondary drive which is 500 GB. I attempted installing grub2 and updating. (See pictures below to see partitions) I followed this ...
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173 views

Why do I have duplicate “ubuntu” entries in my boot loader menu?

When I enter my boot menu, I see two entries labeled "[ubuntu]" that load exactly the same operating system. The recovery entry is also missing. I ran Boot Info Script, which typically covers ...
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38 views

Deploy ubuntu with MAAS fails

I have a problem with the Ubuntu deploying with MAAS. I'm trying to install Ubuntu on a KVM virtual machine. The boot with pxe works, I see the login prompt during the deploying, the server connect ...
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33 views

Install Grub on USB drive / Vaio Pro 13

I'm somewhat inexperienced with Linux. I'm having quite a hard time booting Ubuntu 14.04 along side Windows on my Vaio Pro 13. I've tried using every method I've found on forums but no matter what, I ...
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28 views

Play a video at first boot

i have created my own distro. I want to play a welcome video after the installation completes and the computer restarts. can i do that in remastersys by editing the configuration files. i have no ...
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928 views

How to get rid of the “scanning for btrfs file systems” at start-up?

At start-up, I see the message Scanning for btrfs file systems. How can I get rid of it? I have tried to remove the package with sudo apt-get purge btrfs-tools, but it just shows a blank screen ...
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366 views

After install grub boot loader does not show

I' m having some trouble finalizing my Ubuntu setup. I have installed Ubuntu 14.04 on my Windows 7 Acer, K95V and I just can't get to the boot loader. The current situation is that it just boots up ...
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37 views

cant boot windows 8 or ubuntu!

I 've recently bought a laptop with windows 8 and can't stand it. Though I need to keep it for some software I use at work.. I was advised to install ubuntu and have it set as dual boot. One ...
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3k views

Software raid 1 on ubuntu 14.04 desktop

I am trying to setup Sofware RAID 1 for my ubuntu desktop (14.04) Unfortunately desktop installer no longer supports RAID1 configuration. Therefore I am trying to manually set this up. I followed ...
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83 views

PLoP Bootmanager not loading from GRUB, Attemped dual-boot with Windows 7

so I recently tried to get PLoP Bootmanager working on an HP Pavilion 2000 Series, I had to tweak the settings to make it load though, however, when I try to load it, I get something about "zram does ...
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1k views

Ubuntu 14.04 bootloader install failed

Hi today I decides to upgrade from 12.04 to 14.04. Everything worked in the last moment, a message poped up saying that my bootloader install had failed and would not let me install it on a different ...
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450 views

/boot/grub/device.map is missing on Ubuntu 14.04

The device map file /boot/grub/device.map is in this format: (disk) /dev/device So, for example, on a system with a floppy and a single SCSI disk, the file would look like this: (fd0) /dev/fd0 ...
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174 views

Can only boot in recovery mode and resuming normal boot, but then Ubuntu gets very slow after resuming normal boot

I've just installed Ubuntu 14.04(Ubuntu only no windows) and I'm not able to do a normal boot, screen freezes. I have to go to recovery mode and then "resume normal boot" to start Ubuntu. That would ...
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39 views

Booting briefly shows CLI login and then black

When I boot to Ubuntu on my dualboot system, it appears to boot normally, up to the point when I would normally expect to see the lightDM graphical login screen. However, I see a CLI login screen, ...
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204 views

Grub rescue - error: unknown filesystem unable to find solution from current answer

hii guys i have recently install ubuntu 14.04 on my vaio after that i have srinked a volume from windows 7 after that i am unable to start my laptop. the error is Grub rescue - error: unknown ...
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738 views

Ubuntu 14.04 LTS Boot-Repair Error

I always like to start by apologizing just in case this is a duplicate question, but I don't really know what to ask, so I don't know what to look for. With that being said, I'm running a Lenovo V570 ...
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57 views

GRUB problem after creating new partition - not able to boot live-cd

I've created a new NTFS partition under windows - after reebooting I've received the following error: Unknown file system Entering rescue mode Grub rescue > I would've booted one of my ubuntu live ...
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99 views

no GRUB menu bootloader option

I have used Ubuntu distribution in my HP laptop along with Windows 7 dual-boot before. But due to some mistakes while partitioning using windows default partition tool, I formatted my system drives ...
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125 views

Ubuntu 12.04 GUI not working after installation

So, I installed Ubuntu 12.04 (via Unetbootin) onto my hard drive (I did not use a live boot disk to accomplish this task). After the installation when I boot up I get 2/4 orange dots and half of the ...
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251 views

Ubuntu 14.04 lost cores on AMD CPU

It seems that I have a problem. Installed 14.04 a few days ago, everything was smooth sailing until yesterday it wouldn't boot up. Recovery mode says that CPU's 1-6 don't respond. After 7 it moves ...
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160 views

Operating System not found, win7 dual boot

After installing 14.04 from a liveUSB alongside windows 7 and encountering no problems for about a week, I shut down windows and rebooted only to see the "Operating system not found" message and being ...
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127 views

Ubuntu 12.04 slow boot on ASUS, attached with dmesg and bootchart

I heard that Ubuntu can boot up around 30sec, but I take more than 60sec every time my Ubuntu boot. I also read some forum said need to post the dmesg and bootchart to identify which process slowing ...
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98 views

How to Access or recover files from Apple hdd with bad S.M.A.R.T. and 05-reallocating sector bad?

I have a Macintosh HD (hfsPlus) `[/dev/sdc2 on /media/ubuntu/Macintosh HD type hfsplus(ro,nosuid,nodev,uhelper=udisks2)] WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk ...
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15 views

Purple screen only on resume from hibernate

This might be a duplicate, apologies if it is... I couldn't find anything exactly identical. My system boots up just fine. But whenever it tries to resume from hibernation, I get to GRUB and then it ...
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71 views

How to Access Windows Partition/Drives

I installed Ubuntu 13.10 from bootable Pen Drive and during the installation I had overwritten it on previously run Windows 7. Now I am unable to access the Windows partition D Drive, E Drive, F Drive ...
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1k views

Getting “read failed after 0 of 4096 at xxxxxx: Input/output error” error for LVM

I have system with Ubuntu 12.04. On this system used LVM for managing disk drives and similar mass-storage devices. When I used lvscan command for scanning all the logical volumes then it displayed ...
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38 views

Add 30 seconds to boot in dmsg for no apparent reason

I'm struggling with this one for some time already with no luck... Mu boot process add 30 seconds around root and swap partitions mount: [ 3.098501] Switched to clocksource tsc [ 4.692473] ...
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336 views

Macbook Pro 13 inch (2013 Haswell Retina) - Unable to Install Ubuntu 14.04

I just tried installing Ubuntu 14.04 on my Macbook Pro (2013 Haswell Retina) laptop and it doesn't work. I'm using the rEFInd bootloader and I've been able to load the live CD and run Ubuntu without ...
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1k views

Ubuntu 14.04 Manual Hard Drive Partitioning Help Needed

I'm in need of some assistance with manual partitioning from the Ubuntu 14.04 install GUI. I'm trying to do a fresh install of Ubuntu 14.04 desktop. I have a 60GB SSD as that I want all my OS files ...
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106 views

Can't boot after 14.04 upgrade

Dual boot from 2 hard drives (win7, U13.10). Been running good for months (year?). Auto upgraded to 14.04 over night. Got up in the morning, and it won't boot into Ubuntu. It says it can't find the ...
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243 views

How do you repair a non-booting Windows 8.1 installation after updating to Ubuntu 14.04?

I have dual boot set-up with Windows 8.1(original OS) and Ubuntu 14.10. Recently, Windows stopped booting. I am presented with a 'Recovery' screen with the Error Code: 0xc0000225. Windows stopped ...
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57 views

How to install a Ubuntu 14.04 System on a 128 GB USB

I have been able to do this with an 8GB USB but when trying to do the same on a 128GB USB get various error codes talking about partitions and Mount problems. Can anyone give me clear instructions ...
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110 views

Fresh install of 14.04, can't boot

I had Fedora 20 installed on my laptop, but last night I used UNetbootin to make a bootable Ubuntu USB stick. Installed Ubuntu 14.04, everything went fine, but when I restarted the laptop I got a ...
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30 views

Recovering the Encryption Password Method

my question is that i am installing the ubuntu 12.04 and gave the encryption password at the time of installation but i forget the encryption password so how to recover or change the password without ...
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61 views

T440s Stops Booting into GRUB after a random period of time

I have a new Thinkpad T440s. Here are my specifications: Intel 4600U 12GB (4GB integrated, 8GB stick) DDR3 1600 Samsung 840 SSD 250GB Sandisk SSD 16GB This problem has been a real brain buster as I ...