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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Ubuntu 14.04 hangs at “[2.688088] Switched to clocksource tsc” (Intel Pentium 4)

I installed Ubuntu Server 14.04 on a Pentium 4 machine but booting the System hangs at: [2.688088] Switched to clocksource tsc I've tried all the GRUB kernel bootoptions listed in this post: ...
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190 views

Ubuntu 14.04 startup problems after booting to windows - end trace

I have a hp 8570w laptop, which has windows 7 and ubuntu 14.04 lts dual booted. The problem is that after I´ve used windows and then boot ubuntu it gets stuck as shown in the picture. When I ...
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93 views

How to recover boot startup after dual booting?

I have a big problem. Really big problem. I can't open my Operating System anymore. If I opened my laptop it will display the logo of my laptop then there will be a prompt like this: Secure Boot ...
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39 views

installation of ubuntu after install wont boot at all

I had windows 7 completely removed when I installed Ubuntu 14.04 which is what I wanted. What I don't understand is that the installation worked fine, but when I restart the computer Ubuntu does not ...
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177 views

Why doesn't Windows 8 appear in the “BIOS” boot selection after Ubuntu is installed?

So, I've installed Ubuntu alongside Windows 8. Everything is fine except when I am in the BIOS I only see the Ubuntu partition. I see the Windows partition in Ubuntu, but just not in the BIOS. What am ...
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89 views

Can't boot in Windows 8.1 after dual botting in Ubuntu

I need your help with this. I am in a big trouble so I hope you can help me. I created a dual boot in my laptop. I have a pre-installed Windows 8.1 OS. And before installing Ubuntu. I shrink my disk. ...
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42 views

Ubuntu gnome hanging

I have a dell dimension PC that was running windows xp, I recently got a virus on it which crashed my hard drive. Now when I switch the PC on it shows the dell splash page and then the screen goes ...
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37 views

Can't boot computer

I apologize in advance for formatting and post-organization, I am using a not very smart phone. Now to the post: I've been trying to boot my computer for about a hour now and it won't boot. When I ...
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681 views

Zotac Zbox EN760 Won't Boot from USB

I wanted to install Ubuntu 14.04.1 on my Zotac Zbox EN760. It is using legacy boot, as both the "Win7 uEFI" and "Win8 uEFI" don't get past the purple screen (don't know the official name, the one with ...
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32 views

Windows installation along with ubuntu 14.04 for ASUS

I have a Laptop of ASUS K55A model. I was using windows 8.1 but someday ago a problem happened and I was unable to install windows 8.1 ( I didn't tried other) . Then I tried ubuntu 14.04 and could ...
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14 views

ubuntu crashed with whitish screen

Ubuntu was working fine, I closed it down at night. The next day it would not open. I get a whitist color screen with black looking leaves on the left side of the screen. How do I get it to open up.
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67 views

Ubuntu/Windows 7 Dual boot not working (2 HDD's)

I recently installed Ubuntu on my spare hard drive (I have two, one of which was unused) and for some reason it never dual boots properly. GNU GRUB always shows up when the computer starts up, but ...
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50 views

Dual Boot Manager: Windows Boot Manager does not work

I first had Windows 8.1 already installed on my machine, and then I decided to install Ubuntu 14.04 LTS as well. I first shrunk the size of my Windows Disk. Then I installed Ubuntu, splitting it ...
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175 views

booting graphical desktop on linux 4 tegra (ubuntu 14.04)

I don't know how to boot the graphical desktop. I turn the Jetson tk1 on, type in username and passowrd. then it says I have 339 packages can be updated, and some other text. i type e "sudo apt-get ...
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48 views

Grub “unknown filesystem” Boot-Repair didn't find a solution

after booting my PC yesterday I encountered a Boot-Error and only the grub rescue prompt. error: unknown filesystem. After searching the Internet I booted into the Boot-Repair and tried the standard ...
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119 views

Boot error: stopping system v runlevel compatibility and checking battery state

I'm running OpenFoam froam an ubuntu pendrive. One day it stopped booting with this error message: stopping system v runlevel compatibility. The next times i tried to boot it stucks at "checking ...
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145 views

Windows 8.1 bootloader gone from grub. How do I get it back?

I'm a noob here. I stupidly hibernated my Ubuntu and did not realize that problems will occur if you have 2 OSs hibernating. Didn't know Windows 8 does some kind of shutdown/hibernate. Anyway I ...
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228 views

NetworkManager and rfkill on boot

I've been trying to setup my ubuntu as an access point that would work on boot. I have hostapd, dhcpd and some iptables forwarding rules that all work well. But I'm running into some issue with ...
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217 views

Ubuntu 14.04 on Macbook Air 6,1 nr_cpus=1

After I installed Ubuntu 14.04 along side OSX with refind, selecting Ubuntu (or previously Xubuntu), then Ubuntu from the Grub menu just gives a purple screen. I changed the Grub config from "quiet ...
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385 views

BUG: soft lockup - CPU#3 stuck for 22s! [kworker/3:1:69]

I'm new on linux thing. For my first experience I choosed ubuntu. My notebook is a Dell Vostro 3500 with an intel i5 processor, 4 GB of RAM and an Nvidia 310m as graphic chipset. I downloaded the ...
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27 views

GRUB is not responding. Cannot do anything but shut down my PC manually!

So I updated Ubuntu.After the completion of the update,it asked for a reboot and so I did. But once it rebooted, I was unable to select anything from the two OSes I have (Win 7 and Ubuntu).It doesn't ...
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13 views

Chinese checking-hard-disk-message incorrectly displayed

When Ubuntu is blocked by certain unknown cause, I have to press the power key to force my computer power off. In this case, when Ubuntu is rebooted, it will check hard disks. Before 11.10 those ...
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153 views

Ubuntu 14.04 will not boot after “successful” install

I'm brand new to Linux, just wanting to explore a new system. Picked up a cheap Toshiba C55 and wiped Windows 8 off the machine using a liveUSB stick. Did an overwrite installation from the memory ...
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140 views

Fresh install of 14.04 server edition doesn't boot

I've installed ubuntu 14.04 server, but on power-up I get the error message "Reboot and Select proper Boot device", even though I've set boot priorities correctly. The server is going to be a NAS. It ...
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169 views

Ubuntu 14.04 after suspend screen becomes unresponsive to keyboard and mouse

I have dual boot, Ubuntu 14.04 and windows 8, on my lenovo Z585. I forgot to lock system and left it as it is for half an hour. After that when I tried to access my system, the screen was ...
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36 views

How does Grub2 load the operating system

So I am curious about what is the process Grub 2 is using to load an operating system (Ubuntu) in an EFI system.
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306 views

Can not access BIOS after Ubuntu UEFI Installation!

I recently installed Ubuntu 14.04 in my Fujitsu AH532 laptop. It was just working fine before the installation. But when I planned to install Windows 8.1, I could not access the boot menu or BIOS ...
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55 views

can't select Ubuntu drive in Boot Order if multiple drives are present

After disconnecting Drive C: which contains Windows, I re-started my PC and booted to the Ubuntu CD and installed Ubuntu 14.04.1 LTS on a spare hard drive. I can boot to Ubuntu if I disconnect the ...
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52 views

SD mounted tails and partition. Laptop stopped detecting

Without changing anything and without updating, installing, modifying or anything, my miniSD/SD adapter stopped working. I plug it in, start, go to boot menu and now it doesn't come up as an option. ...
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136 views

Cannot boot after Boot-repair

I've installed Lubuntu 14.04 on an old PC, a Packard-Bell Pentium 4 1,7Ghz, with 1Go memory... I plan to turn it into a local server, to share movies, etc... I have thus installed Lubuntu 14.04, but ...
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80 views

Boot repair broke ubuntu

I had windows 7, and then successfully dual-booted with ubuntu 14.04, but one day my computer crashed and windows stopped working, so I could only use ubuntu. Then I reinstalled windows 7 and it ...
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14 views

need help with installation

when I try to install Ubuntu, my computer makes me run it off the USB still and when I click on the icon that says install Ubuntu 14.04.1 LTS nothing happens at all and I am stuck running it off the ...
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258 views

Ubuntu 14.04 doesn' t boot after upgrade from 12.04 installed inside Windows 8.1 clarification

I have Ubuntu 12.04 installed like an app on windows 8.1 (Ubuntu 12.04 allow to be installed like an app in Windows 8.1 and it can be removed when you don't need it any more from Control Panel). ...
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1k views

Grub Rescue, Error: unknown filesystem

I am trying to boot Xubuntu 14.04 but getting the following error: Verifying DMI Pool Data............. error: unknown filesystem Entering rescue mode... I tried the following commands: set ...
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96 views

14.0.4.1 - Installed, loaded once, reboot unable to find boot device

I have been attempting to setup an Ubuntu Desktop PC, however every time I perform the installation (goes through fine) and then do the first time load (still fine) I then reboot the machine only to ...
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163 views

Can't boot from Windows 8 to Ubuntu error in file \EFI\ubuntu\grubx64.efi

First of all I had a pre-installed windows 8 on my laptop device (Toshiba) then I wanted to install Ubuntu linux alongside with windows 8. I installed it regularly then I had a problem that I couldn't ...
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190 views

EasyBCD: can't boot into Windows after ticking neogrub boot loader in EasyBCD

I ticked neogrub bootloader in EasyBCD. Thus the option "Windows 7" is disabled, as shown in the pic below. Then I reboot the system and now I can't enter Windows 7. What can I do? Thanks! ...
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254 views

No option to boot Windows?

I am sorry if this question has already been answered, but I was unable to find an answer that pertained to my specific problem. I recently installed Ubuntu alongside Windows 7 following the ...
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124 views

PXE boot issue (error 32) / tftp

I have some old laptops that I'd like to boot via LAN. First, because the drives on these are failing / have failed, and because they're now both over 14 years old, and then for the learning ...
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25 views

How can I get rid of glitched boot screen in ubuntu 14.04?

I have a Sony Vaio VGN-FW550F w/ATI Radeon graphics. My problem is exactly like the one in question "how can I get rid of a graphical glitch on Ubuntu 12.10", which is closed.
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112 views

use grub2 command line to boot from CD

I can't run uBuntu (it stucks in loading). I tried to boot with disc but It goes directly to Grub2 menu. I can't enter BIOS it displays 'please wait' and then goes to grub2 menu either. the only ...
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38 views

Ubuntu No Longer Working: Asking for drive cache failed

Whenever I start my computer, everything works fine. I let it load, then I select the Operating System. In this case, Ubuntu. Then, I get this message and it repeats hundreds of times and It doesn't ...
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88 views

How to start openvpn on boot?

I am running Ubuntu Desktop 14.04 x64. I have openvpn installed and a client.conf file in /etc/openvpn. However, openvpn doesn't start on boot. I would try editing /etc/default/openvpn to make it ...
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74 views

Delete tp-trackpoint-elantech

I installed Ubuntu on my Lenovo T440 and not everything was working fine with the plain installation. So I used the official lenovo wiki to install all drivers. After I installed ...
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39 views

No such partition. Grub rescue

I installed Ubuntu on one of the two of my hard drives. My other hard drive has Windows 7. When I booted from the Ubuntu hard drive but then it had an error and said "no such partiton. ". So I ...
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401 views

unetbootin ubnldr.MBR error during boot up

So basically I've tried installing Ubuntu alongside windows 7 using the live disc but it won't recognize my windows 7 installation. So I used unetbootin to install Ubuntu alongside windows and after ...
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91 views

Freeing space on /

Recently i experienced X server fails on my Ubuntu 12.04. When i booted up i got a window sayig that system is running in low-res mode, the option to run it like that once, failed. - coulnd't log in ...
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583 views

Unable to boot into windows after installing ubuntu alongside

I have just installed ubuntu 12.04 alongside my existing windows 7. But I do not get any option to boot into windows 7. I have tried to install a grub such that I now have a boot menu in which I ...
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123 views

Ubuntu 13.10 problems while installing

I have a problem regarding Ubuntu 13.10 installation, i currently have OpenSUSE, but would like to switch to Ubuntu, so i have burned the image to a DVD, and when trying to boot up from the DVD, it ...
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575 views

Can't get past boot menu after WUBI installation

I just tried to install Ubuntu 12.10 using the Windows Installer from the Ubuntu website on my Windows 7 Home Premium ASUS gamers laptop and while it appeared to install correctly, when I rebooted the ...