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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Laptop not booting after installing Ubuntu 14.4.3

I installed Ubuntu 14.4.3 in my new Dell laptop to replace Windows 8. Everything was fine till completing installation and restart. After restart my laptop shows only BIOS screen. I am unable to boot ...
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Black screen after booting Ubuntu on an Asus Zenbook Pro UX501

I have Ubuntu installed on an external hard drive. It was originally installed on my old laptop, but now I have a new one. When I try to boot on it, the computer seems to boot properly but there's no ...
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Encrypted partition disappeared. Remounting / recovering the data

I had an encrypted partition which I setup perhaps 3, maybe 4 years ago. I don't remember the details of how I set it up, so I'm not sure how to recover it. After a recent update (sometime in the ...
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I installed Ubuntu 14.04 with MAAS

Everything seemed to go well, but when I try to commission a node the machines PXE boot to login and then shutdown. I have commissioned three. All have been allocated but they all boot to login ...
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Will booting an ISO image from a USB damage the opertaing system on a pc?

ok, so i've created a bootable USB from a Win XP SP2 ISO, so if anything goes wrong with my laptop i can recover my info etc. So i'd like to test this out, but if i now put this into my laptop and ...
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Xubuntu taking a minute plus to shut down for reboot

This seems too long to me, and longer than I recall when I had a Mint boot. I am currently dual booting. Is this normal? If not, what might be the cause?
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Grub Rescue madness after changing Partitions

I had elementary OS and Windows 7 installed. In Windows 7 i deleted the elementary OS Partition. After rebooting i got this: error: file not found. grub rescue> So I searched the internet and ...
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26 views

Creating bootable usb stick in Ubuntu [on hold]

I am trying to install the tiny7 operating system to my xps 13 (9343). I am going to use this lightweight os to play poker games, since wine does not seem to work for bovada for me. I but the disk ...
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25 views

Can't Select Ubuntu partition on startup

So,I'm in a bit of an odd predicament. My motherboard got messed up in such a way that now the SATA ports don't work so can't use my hard drive, so I've been using live Ubuntu USB drives and just ...
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1answer
23 views

Grub menu at boot time… “holding shift” not working

I read here at this thread that holding Shift during boot can bring up the GRUB menu. However I try holding one or the other Shift keys, tapping, tapping then holding, nothing works. Am I missing ...
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1answer
16 views

restoring grub file

Yesterday when i restarted my computer it is showing screen with error : No bootable devices found So I am trying to restore my grub file using this guide but my boot repair doesn't have both ...
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10 views

ASUS Netbook - Loading Ubuntu

I'm still new to Ubuntu. I have 3 identical ASUS netbooks and have gotten Ubuntu loaded on 2 of them. The last one came with Win8 and I can't seem to get either the USB stick ISO or the USB disk drive ...
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12 views

[1. 398289]ACPI PCC Probe Failed

I have just installed ubuntu 14.04 today. After some time I decided to upgrade to 14.10 and now when I try to boot it shoes me [1. 398289]ACPI PCC Probe Failed; and then a black screen and I ...
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21 views

Cannot boot from CD - ubuntu-14.04.3-desktop-amd64

After hitting F12 and booting from CD, all I get is a small oval and a human figure inside of a circle at the very bottom of the screen. Please help!
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11 views

Unable to Boot OS of Cloned VM

Using VMware version 5.5.0, I cloned a virtual machine running Ubuntu 14.04 LTS (GNU/Linux 3.13.0-24-generic x86_64). Prior to powering on the cloned machine, I disconnected it from network adapters. ...
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18 views

Filesystem check or mount failed. dpkg too many errors

My ubuntu does not boot anymore. I have checked the sources.list and have 14.04.3 LTS (trusty) in it. But it seems that it failed during an upgrade. I have a similar error like this Filesystem check ...
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2answers
31 views

Is dual booting ubuntu 15.04 and windows 8.1 different from 14.04?

Do I need to change any steps in dual booting it? With windows 8.1 that is. (UEFI) I intend on doing it automatically rather than manually creating partitions.
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24 views

Does ubuntu run on my PC? [duplicate]

I have a short question. I am trying to install Ubuntu on my desktop PC. I used an Universal USB Installer to setup an USB drive to boot from it, but when I try to boot any option that I pick (try ...
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Ubuntu 14.04 mounts external USB drive on boot with option “noauto” in fstab entry

I have an external USB drive and a USB thumbdrive connected to my computer. Both have an entry in /etc/fstab with the option noauto (will post the whole fstab entries at the end). While my thumbdrive ...
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24 views

Ubuntu installation freezes at splash screen

I've decided to try out ubuntu, and tried to install the one available at ubuntu.com (Ubuntu 14.04.3). However when I boot it, I select Install and it just hangs at the splash screen. I tried looking ...
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25 views

windows 10 not booting after Grub2 upgrade

I have two hard drive, with 3 OS: Ubuntu 14.04, Ubuntu 12.04 and Windows 10. Ubuntu 14.04 is on one drive, while Ubuntu 12.04 and Win 10 are on the second HD. [I also have some old small hd that i ...
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17 views

Grub Rescue Prompt, Booted from live usb, Missing config file in grub dir, bootRepair tool doesnt help

I installed Ubuntu 14.04 along side Windows 7 professional. When I attempt to boot I am given a Grub Rescue> prompt. when I type the ls command, it lists the partitions but when I ls the individual ...
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21 views

I cannot login or open a tty

Here is the situation: I am on ubuntu 14.04 x64 with nvidia 740m graphic driver. Last night ubuntu complained about lack of space and I tried to delete something. I followed some url and freed some ...
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8 views

Ubuntu 14.04 Oracle virtual box windows 8 fail to locate files

I have downloaded windows 8 ISO file from their offical website: Widnows 8 download Then i have set the following settings on my new virtual drive: As you can see ive added it to the disk: ...
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1answer
29 views

Why my Ubuntu block wlan & how to unblock?

Everytime I boot Ubuntu, my wifi lan is Soft-blocked. ( I did rfkill list, rfkill unblock wlan to verify the case. In addition I note that it is blocked some seconds after boot is finished). how can ...
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Ubuntu 15.04 Installation Problem, HP Envy 15 [duplicate]

This is my first system with UEFI.... Laptop name: HP Envy 15 Notebook PC (with Touchscreen).... OS installed: Windows 10, self installed .... Processor: Intel i7-5500U @ 2.40GHz (4 CPUs) .... Ram: 8 ...
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Cancel 'rfkill wlan' at boot?

When I boot, my Wifi is always soft-blocked. In terminal, sudo rfkill list does: 0:hcio: Wireless LAN Soft blocked:yes Hard blocked:no How can I definetly unblock Wireless LAN ?
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14 views

Kernel panic - not syncing: VFS: Unable to mount root fs on unkown-block(0,0) [on hold]

after a reboot I get the following error message: The grub menu: I can boot the system by selecting previous version->... 3.13.0.64-generic (/dev/sda1) in the grub. Here an image of the boot ...
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13 views

After upgrading of a kernel from the **3.19.0-15** to the **3.19.0-26** it shows me color lines on boot

CPU: Intel Core i7-4770. GPU: NVIDIA Corporation GK104 [GeForce GTX 760] (rev a1). Ubuntu 15.04 with LVM on LUKS: sda 8:0 0 111,8G 0 disk ├─sda1 8:1 ...
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4 views

Use systemd to “mount” wlan0 at boot

Context (if needed) : at boot, the service "myservice" is launched. It manages to "up" the wlan0 interface. But it does not exist yet at boot. ifconfig, after boot, lists only eth0 and lo. If ...
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PXE booting a syslinux Kernel

I got a small Problem with my Ubuntu 14.04.3 LTS Server. At first i've installed this packages on my server : dhcp3-server , tftpd-hpa , nfs-kernel-server and syslinux. Everything runs fine and i've ...
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1answer
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Boot, How to run my service **after** Network Manager?

I have made a service - which changes settings of network interfaces -. I want to start it at boot. Issue: even if I set it 99 priority, it works only a few seconds. It seems its interfaces config ...
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1answer
32 views

Ubuntu 15.04 Server - How to stop X from starting at boot

I'm new to Ubuntu. Just setup a system with 15.04 Server. I installed X because I sometimes want to use it but it's automatically starting at boot. How do I disable this? I still want startx to work ...
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boot - How to fix ata errors on startup

I created a bootable usb of ubuntu-14.10-desktop-amd64 using pendrivelinux. I changed the "quiet splash" to "nomodeset" to see the full logs. Then I encountered something like this.. [ 45.865200] ...
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Kernel panic attempted to kill initexitcode=00000009 Dell inspiron 3000 series with ubuntu kernel 3.13.0-62-generic

I have a Dell Inspiron 14 3000 series with Ubuntu. I keep getting a kernel panic failure to sync attempted to kill init. I did a factory reset and tried a different kernel. currently it is ...
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boots to Busy Box (initramfs) 14.04

I cannot get out of this screen. I need to get into this computer. Can someone walk me through the commands to get it back?
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linux-image-3.19.-.26-generic broken

For reference, I'm on Xubuntu Vivid, installed on a ASUS E451LD (aka a PL451LD). It has an Intel/Nvidia Optimus GPU setup. If I boot off a 3.19.0-26.28 kernel, it sticks on a blank screen or on the ...
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How do I boot back to Ubuntu? (Booting from Windows to Ubuntu)

I installed Ubuntu some days ago, running alongside with Windows 10 (dual booting, I guess it's called). I booted Ubuntu from a USB flash drive, and after pressing F12 at PC startup (Windows Booting ...
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7 views

Improve boot time [network-online.target]

I want to improve my boot time, if possible $ systemd-analyze critical-chain The time after the unit is active or started is printed after the "@" character. The time the unit takes to start is ...
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1answer
22 views

Restore EFI from Windows after Windows 10 upgade broke boot list?

I updated to Windows 10 late July, and it deleted all of the boot entries on my computer. I was able to find the correct Windows boot efi file, and added the option to boot, but I could not find the ...
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7 views

Black screen and reset in Ubuntu after logging in

I have a problem logging in Ubuntu. Problems started after forcing shutting down Ubuntu, from power button, while it was updating. Next restart, it displays the users I have in Ubuntu, but when I ...
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2answers
31 views

How to handle GRUB configuration on a multi booted system?

I just finished changing the boot order for GRUB2. I have three operating systems installed on the computer. I have Windows 8.1, Ubuntu Linux 15.04 and Mint Linux 17.2. I followed Marve's answer here: ...
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Should I dual boot with ubuntu 15.04 or ubuntu 14.04? And how do I actually dual boot with these?

Almost all the guides I can find are for earlier versions of ubuntu or do not apply to my situation. It would be greatly appreciated if someone could explain whether I should dual boot ubuntu 14.04 or ...
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Busybox initrmf disk by UUID not found ubuntu 14.04

I am aware there are few more questions about this problem, but this is slightly different. I am running Ubuntu 14.04 and windows 8.1 on a dual boot Samsung laptop. This setup has been working ...
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2answers
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Impossible to log in after changing $PATH

I'm using Ubuntu 14.04. While updating TeXLive I changed the PATH in an obviously wrong way. Now I can't log in: when I enter the correct password it comes back to the log in page. I connected on ...
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deleted linux mint from win 8.1 dual boot and cannot reinstall linux [on hold]

Until yesterday i had a dual boot of windows 8.1 with linux mint 17.2 Rafaella Cinnamon x64bit.Via the terminal i deleted something that i shouldn't and then when i rebooted the pc ,linux stuck at the ...
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Ubuntu does not appear in Grub, Boot Repair goes on indefinitely

I installed Ubuntu 12.04 (32 bit) in my desktop alongside Windows 7 using unetbootin by making separate partitions for / and /home. Installation went fine, but after restarting the Grub menu showed ...
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1answer
16 views

Ubuntu install erase disk fails

I am trying to install Ubuntu 15.04 on my computer but it fails. I used Win 8.1 before on that SSD. My pc starts the installer in UEFI mode. The installer says that there is no other OS on my pc and ...
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8 views

Stuck on the purple loading screen

My system doesn't boot, just stuck on the purple loading screen. When i press ESC it show me * Starting Reload cups, upon starting avahi-daemon to make sure remote queues are populated [ OK ] * ...
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1answer
15 views

BQ Aquaris E4.5 won't boot - Screen flashes and phone stops

I've been using this phone for a while now, but suddenly it won't boot anymore. I press the power button and after 3 seconds the screens lights up for a split second and shuts back down. If I keep ...