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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Boot stuck at logo screen after upgrading to 14.10

After upgrading from 14.04 to 14.10 my computer cannot boot anymore, it is stuck at the logo screen (with animated dots). By displaying the boot process, I see that it is stuck at "Stopping log ...
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257 views

Ubuntu 14.10 does not shut down on Acer Extensa 2509 notebook

Hello fellow Ubuntuers, I am currently running into a problem with my new Acer Extensa 2509 notebook. After installing Ubuntu 14.10 onto the hard drive, I was not able to shut down my live USB drive. ...
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465 views

An error occurred while mounting /

for no reason I have not been able to boot Ubuntu 14.04 today. Splash screen at first displayed "An error occurred while mounting /". I tried to do filesystem check: ubuntu@ubuntu:~$ sudo fsck.ext4 ...
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251 views

MAAS 1.7 How to Deploy utopic images

Installed MAAS 1.7 and successfully deployed several Trusty images; however, cannot deploy any utopic images. Added utopic repository by following http://maas.ubuntu.com/docs/bootsources.html, and my ...
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61 views

Cannot display this video mode - Ubuntu 14.04 (32bit)

Quite similar to Cannot Display This Video Mode? which seems to have never been answered. Display works fine in liveCD but not in full installation. Full install boot I get the bios splash and then ...
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83 views

Update GRUB with encrypted LVM on second volume/drive?

On one machine I have an encrypted LUKS container around an LVM on /dev/sda that I can boot into. On the same machine is a second drive with an encrypted LUKS container around an LVM on /dev/sdb (that ...
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94 views

Very slow boot Ubuntu 14.04 Asus laptop

Quick question here. I've got Ubuntu 14.04 on a Asus U36JC (i5, dual boot Windows 7). I think I started this laptop on Ubuntu 11 or 12 and have updated always without wiping the hd. It used to boot ...
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148 views

Ubuntu 14.10 taking a long time to boot

So, this has only started happening about a week back for no apparent reason. Ubuntu takes almost 4-5 minutes stuck at the purple Ubuntu screen for no apparent reason. Furthermore the GRUB 10-second ...
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69 views

After selecting Grub entry, screen switches to power save

After I select an entry (Ubuntu) from the Grub menu, the screen goes to power save mode. I could eventually get the screen asking me for the HDD encryption password by pressing Alt-F1 and then Alt-F7 ...
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72 views

Ubuntu signed Grub do not prefix tftp-root directory for tftp requests

$ lsb_release -rd Description: Ubuntu 14.04.1 LTS Release: 14.04 dpkg -l grub-efi-amd64-signed Desired=Unknown/Install/Remove/Purge/Hold | ...
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85 views

Ubuntu Installer does not recognize existing partitions

History of my laptop: Acer E1-572 with Windows 8.1 preinstalled. I then dual booted with ubuntu without any problems. Then I came across a booting problem which I resolved by reinstalling ubuntu over ...
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270 views

Ubuntu won't boot after install on ssd

Last week I bought new Acer Laptop which came with a pre-installed Windows 8.1. I replaced the factory 500GB HDD for a Crucial MX100 256GB SSD, after which I used a bootable USB device to install ...
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365 views

Install to Intel NUC with onBoard 4GB eMMC

I'm just trying to install Ubuntu 14.10 onto an Intel NUC which has onboard 4GB eMMC storage and no other drives attached (Intel NUC Kit DE3815TYKHE). I've managed to get a working model for a CentOS ...
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810 views

Ubuntu 14.10 -TPM error(7) occured

Ubuntu 14.10 no caching page found on all hard drives 2 sata and two IDE also same if I mount avusb drive. After upgraded from 14.04.1 and also from a clean install of 14.10 During boot I get error ...
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77 views

LTSP Client Boot Issue - Ubuntu 12.04 VMware

Today I've been trying to get a virtual Ubuntu 12.04 LTSP server and client setup running in VMWare Fusion by following this guide. ...
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91 views

Battery not detected, /proc/acpibattery empty even it is present

I'm using Ubuntu 14.04 and it is fully up-to-date. But the battery of my laptop is never detected. There is no battery icon on the top bar, the /proc/acpi/battery is empty. I've tried to remove the ...
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250 views

Triple Booting Mac, Windows, Ubuntu on Mac with Windows Already installed with bootcamp

So on my macbook I have OS X 10.10 Yosemite, Windows 7 Professional, and I want to install Ubuntu from a USB stick. I already have a bootable USB drive, and already installed refind. The problem is ...
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1k views

How to fix “/dev/mapper/ubuntu--vg-root does not exist” on new installation?

I just installed 14.04.1 on a USB 2.0 drive. At startup, I'm prompted for the encryption key, which I enter. After that though, I get the following: Gave up waiting for root device. Common ...
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87 views

make bootable hard disk to install multiple OS

I am using Ubuntu 14.04 LTS and I have two partitions in my hard drive. So I want to install Windows in one of my partitions and keep Ubuntu on the other. To do so, I want to use my external hard ...
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558 views

Ubuntu BusyBox initramfs Error 14.04

Suddenly after shutting down Ubuntu and when reopenning, I get prompted to one shell of BusyBox. I only had a set of options in help there. I tried to follow this solution: Boot drops to a ...
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561 views

ERROR: No boot disk has been detected or the disk has failed

I've acer-pc which had at the beginning installed oem windows 8 or 8.1 x64. Later I wanted to install custom ubuntu. I checked oem/normal/x86/x64, other windows installations. I've installed os even ...
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39 views

why can't i resume after using lock/hibernate mode?

First of all, hibernate has been very iffy for me. And then when I open my computer back up it goes to the Light Display Manager login. I usually can "Ctrl-Alt-F7" to get to the regular login, but ...
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210 views

Slow boot/resume from suspend

I recently installed Ubuntu 14.04 LTS alongside my Windows 8.1 on my laptop and have been enjoying it a lot. I realized some day that I wanted to give more space for my root and home partitions (they ...
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32 views

How do I make my system detect ubuntu?

I have two partitions one is ext4 for ubuntu 500 gb and other is ntfs for windows 500 gb again. But the syetem automatically boots to windows without detecting ubuntu and also does not detect the 500 ...
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232 views

Kernel boot problem (initramfs) 14.04

I am getting desperate about a boot problem, since ubuntu (14.04) is kicking me to the initramfs prompt. From there I tried several tips I found online without success and the only thing that worked ...
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53 views

Ubuntu 12.04 server reboot issues after updates

I have a 12.04 LTS ubuntu server (I used the how to forge guide to setup apache, php, postfix, dovecot, bind and ISPConfig). I have noticed a somehow random reboot issue which I have eventually ...
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114 views

Installed Ubuntu 14.04 after Windows (dual-boot) - Windows now no longer boots up

I recently installed Ubuntu 14.04 after several failed attempts at other distributions running alongside Windows 8.1. I have managed to successfully install Ubuntu 14.04 alongside my Windows 8.1 ...
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87 views

Gparted and installed don't see partitions after boot-repair

I'm trying to fix my friend's computer after it got borked by a power surge. It can boot fine from USB, but if you boot the disk, it makes it to grub and then fails no matter which you select. He had ...
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59 views

Attempting to install Ubuntu 12.04. Unable to find a medium containing a live file system

I am rather new to Linux and Ubuntu and have attempted to download Ubuntu 12.04 desktop, burn it to a disk, and install it on my SlimPro Model SP675P with an external DVD drive. I run the disk and my ...
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69 views

Glitch on Ubuntu 14.04 boot

For some reason, I re-installed Ubuntu 14.04 on my computer. But this time, I detected a glitch on boot. After the motherboard boot finished, there's a black screen with a purple border, and then for ...
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19 views

Need help installing on an odd Win8/Android pc

I was given a Windows 8/Android tablet that will not boot properly. If it tries to boot into windows I get a CRITICAL_PROCESS_DIED error every time. There is no option to boot into Android. I want ...
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90 views

Why does the Ubutu 14.04.1 Desktop AMD64 tell me “(initramds) Unable to find a medium containing a live file system”?

I'm trying to install Ubuntu onto new built PC without an OS. I burned Ubuntu 14.04.1 Desktop AMD64 onto a disc and inserted that into the disk drive and set the boot priority to the disk drive first. ...
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793 views

MDADM RAID1 Home Server System disk error: incrementally starting raid arrays mdadm: Create user root not found

I'm not sure what else to check. Everything below looks sane to me but the system hangs on boot. This is a home server with four disks crammed into a Dell OP620. Each pair of disks are assembled as ...
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147 views

Can't enter Ubuntu 14.04 with AMD R9 290 (Black Screen)

I've recently installed Ubuntu along side my Windows 8.1 on my HDD. The moment I tried to boot I got a weird purple outline, followed by a black screen and monitor signal loss. I entered grub ,using ...
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98 views

bad mount option “x-gvfs-show” or missing value

[14.529446] UDF-fs: bad mount option "x-gvfs-show" or missing value My boot stop on this row......so I'm able to boot Ubuntu only using "advanced option".
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140 views

Boot repair on raid after crashed system-upgrade

I found it difficult to find an answer to this problem without specific step by step advice. During an Ubuntu system update an error occurred and it froze my PC. After a forced shutdown I encountered ...
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91 views

Ubuntu Trusty hangs at boot

Friday I installed upgrades, then shutdown my computer for the week-end. This morning (monday) my Ubuntu hangs at boot. The "loading dots" screen become a black screen, then nothing happens. If I ...
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38 views

Installation guide for windows 7

Currently I am using windows 7 and I have two partitions in it.I want to install Ubuntu in one of it without effecting other partition. Please guide me.....
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43 views

Desktop is empty after installation/first logon

I'm new with linux so I do not know a lot about it. I was just trying to Intall Ubuntu 14.04 on mu DELL DIMENSION E521. The installation worked perfectly fine.. no errors... After the computer ...
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629 views

Solved - Failure to upgrade from 12.04 LTS to 14.04

I was trying to upgrade to 14.04, everything vent fine without errors but after reboot the system has crashed. I am getting this error message: mount: mounting /dev/loop0 on /root failed: Invalid ...
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304 views

Can't boot Linux from an external USB SSD drive

Windows 7 OS. Is there any difference between Linux Live CD and Linux installation on an external USB SSD drive in point of view of boot? I can boot Linux LiveCD without a problem when set boot order ...
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31 views

Boot disk problems

Followed the download instructions for making USB bootable for 14.04.01 on borrowed iMac as laptop needs a clean boot. Copied command line from instructions and pasted into terminal, returns error ...
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54 views

Can't boot various Macs from USB, “malformed file” error

I have been given a USB by my university with a bootable version of Ubuntu (I am unsure what version) pre-loaded with a bunch of software I need for robotics. Several computers successfully booted ...
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227 views

Dual Boot Windows 8.1 and Ubuntu 14.04 no GRUB appearing going directly to WIndows

I was trying with my friend to Install Ubuntu 14.04 In Dual Boot Mode With Windows 8.1 UEFI in my new Toshiba laptop. The installation of Ubuntu was finished successfully. However when I rebooted ...
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405 views

Ubuntu boot error premature end /casper/vmlinuz.efi

I'm trying to install ubuntu and when I click on the try ubuntu before installing one it gives me this error Error: premature end of file /casper/vmlinuz.efi. Unaligned pointer 0xc0512c0B Aborted. ...
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29 views

can't run my newly installed ubuntu 14.04

Yesterday I installed Ubuntu 14.04 via boot stick, I restarded my computer - everything worked perfectly fine. When I booted the system again later that day nothing worked after logging myself in. ...
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127 views

Clean install of 14.04 on Dell Vosro 400 with dual screen setup boots to black screen with working cursor

I am installing Ubuntu 14.04 LTS 64-bit on my Dell Vostro 400, but upon every attempt to boot, I only get a black screen with a working cursor. It is set up with a Nvidia GeForce 7300 LE videocard ...
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27 views

Problem with ubuntu / W8 install and grub

I recently made a mistake when installing Ubuntu 14.04 on an external hard drive plugged to a Windows 8.1 laptop. My problem is that now if I have the external hard-drive plugged I can choose on which ...
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452 views

Ubuntu 14.04.1 persistent on USB flash drive deleted Windows 7

I installed Ubuntu 14.04.1 persistent on a usb flash drive using Linux Live usb creator http://www.linuxliveusb.com/ and everything went fine. I gave it persistent memory for the flash drive to store ...
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24 views

Grub takes forever to show up

I just installed Ubuntu 14.04.1 LTS on my MacBook Pro 5,3. Everything works fine so far except for GRUB. It takes 5-8 minutes to just show up. The rest of the boot process goes as expected. I'm also ...