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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7
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2answers
6k views

Howto run Ubuntu with UEFI and Intel Smart Response Technology

This question has NOT been answered by the following due to them saying to permanently disabling these features Installing Ubuntu on a Pre-Installed UEFI Supported Windows 8 system Install ubuntu on ...
7
votes
3answers
372 views

Hard-drive fails to boot if suspend was activated prior to restarting. Booting a live USB/CD fixes the issue (temporarily)

I am running 12.04 64-bit and am dual booting with Win7, for full disclosure, although I suspect that has nothing to do with my problem. The boot-loader(GRUB) fails to load often and I will be ...
7
votes
3answers
2k views

How do I troubleshoot booting into black screen? [duplicate]

Possible Duplicate: My computer boots to a black screen, what options do I have to fix it? I installed Lucid Lynx over PXE onto this dell server seemingly successfully, but booting from the ...
7
votes
2answers
8k views

Why is the command in /etc/rc.local not executed during startup?

I have a single command in my /etc/rc.local script that is supposed to start the update daemon for Tiny Tiny RSS during startup, but the script is not executed during startup. Why? The entire ...
7
votes
1answer
12k views

Booting Ubuntu Failure : error: attempt to read or write outside of disk 'hd0'

I have installed ubuntu 12.10 in a WD external harddrive (320GB). This is a complete installation, not live USB. When I plug it in my HP desktop I go to the BIOS settings and boot off the harddrive, ...
7
votes
5answers
4k views

Why is my Ubuntu 10.10 CD not booting?

I have downloaded Ubuntu 10.10 and burned the ISO but it will not boot. I discarded problems with the ISO, as I've downloaded from the official website with no errors, and burned it with no errors. ...
7
votes
3answers
4k views

Why isn't Grub2 using custom resolution?

I hope somebody can help me with this... Running Ubuntu 12.10 GNOME Remix I am trying to get Grub2 to use a resolution of 1600x900... I have checked vbeinfo and hwinfo --framebuffer which both ...
7
votes
2answers
557 views

Upstart script: Detect shift key down at boot

I want to create a boot up potential which allows a different upstart/runlevel configurations to load based upon specific key downs at boot (or combos). How do I detect a key down event with an ...
7
votes
4answers
11k views

Very slow boot due to mounting filesytem

I just installed Ubuntu 11.04 over an older version of Ubuntu, and am dual-booting with Windows 7. Most things seem to be working well (i.e. wifi, sound, etc.) but boot time is problematically long. ...
7
votes
3answers
1k views

Unable to boot into 11.10 in normal (get a black screen) OR recovery (get just a flashing cursor, no cli)

Okay, so I had a dual boot of Tango Studio (based on Ubuntu 10.04) and Windows XP. Yesterday I downloaded the .iso for Ubuntu 11.10 and attempted to install from a USB (my BIOS won't normally boot ...
7
votes
2answers
1k views

Is my boot process normal? It takes 50 seconds boot

Here's my boot.log resume: libgcrypt version: 1.5.0 fsck from util-linux 2.19.1 fsck from util-linux 2.19.1 fsck from util-linux 2.19.1 /dev/sda5: clean, 668102/3276800 files, 4449436/13107200 blocks ...
7
votes
1answer
2k views

Reboot hangs 100% - possibly in mountall

UPDATE: It seems mountall is hanging inside the routine emit_event(), which it calls after / is remounted to emit an event to that effect. Inside emit_event, it calls ply_boot_client_flush(), then ...
7
votes
2answers
34k views

Disk Drive / not ready yet or not available

I'll tell you the whole story. I decided to upgrade my natty from alpha to beta after a long time.After the updates has been downloaded, the system crashed during installation. I rebooted the system ...
7
votes
0answers
1k views

How do I speed up boot time? [duplicate]

Possible Duplicate: How do I improve boot speed? I am dual-booting Ubuntu and Windows 7. When I select Ubuntu at the GRUB menu, a blinking cursor in a black screen comes and takes some ...
6
votes
3answers
7k views

How to run a script during boot as root

I had a script that automatically enables my wifi without using networkmanager, but I don't know how to run the script as root while the system is booting. How do I make the script run automatically ...
6
votes
4answers
18k views

How to restore Windows 7 MBR without a CD

I have been playing with Ubuntu for a few weeks now, and I'd like to revert my computer back to it's original - factory - defaults. On the computer I have a recovery partition (it's a netbook). I ...
6
votes
2answers
45k views

How can I set my Ubuntu 12.04 LTS to boot to console without GUI? [duplicate]

So I installed Ubuntu server to run some tests on a VM. For various reasons I couldn't get a specific DEB file, and instead of using a shared folder I decided it would be a good idea to install ...
6
votes
3answers
3k views

Exit Ubuntu Splash Screen

Is there a way to exit the splash screen during boot and view the verbose boot without rebooting? For future viewers sake: this is for GRUB2 on Ubuntu.
6
votes
2answers
44k views

How can I start in safe mode?

I did a clean install of Ubuntu 12.04 on an Acer AX1430G desktop. Everything went fine until I installed the additional ATI driver. When I reboot the computer, my monitor gives a "signal out of range" ...
6
votes
6answers
1k views

How can I tell linux kernel to completely ignore a disk as if it was not even connected?

Notice Please scroll down for the answer (it has 0 points but it is the correct one). The problem is solved by a patch that will be in kernel 3.12.7 and up; I hope it will back-ported to earlier ...
6
votes
3answers
3k views

How can I repair a system with a deleted kernel?

Because I wanted to get more free space on my HDD, I deleted old kernels (dont ask me why I was so mad.). I accidentally deleted the active kernel too (3.2.0-27 on Ubuntu 12.04). First I couldn't ...
6
votes
1answer
65 views

How do I report a bug that happens during boot?

I seem to have found a bug in 12.04 while it's booting, but all the questions on this site seem to point users to reporting bugs once the desktop is up and running by using ubuntu-bug. How do I ...
6
votes
2answers
10k views

How to make a bootable ISO image from a bootable DVD?

I want to make a .iso image of a bootable OS DVD, to use in VirutalBox. Nautilus can make a .iso, but only of data files, it seems. The .iso it created was not bootable. What is available to make ...
6
votes
2answers
5k views

“General error mounting file systems”

No idea what I've done, but I just started getting this error everytime I boot. Running Ubuntu 12.04. I was able to see more of the boot log by removing splash and quiet from grub. I believe this ...
6
votes
5answers
3k views

How to autologin (without entering username and password)(in text mode)

I've installed Ubuntu 12.04 & and edited the /etc/default/grub file to auto boot into text mode. but every time I turn on the computer it asks for username and password (in text mode), I wanted it ...
6
votes
1answer
928 views

Is it possible to get the tux logo on the text based boot?

On Knoppix based distros, you get a nice Tux logo on the left of the screen during text boot, Is this possible to get on Ubuntu?
6
votes
1answer
392 views

LiveCD does not work on my desktop

I've installed new version of Ubuntu on my laptop without any issue using the LiveCD. But on my desktop, weird things happen: During the 1st try booting with the LiveCD on my desktop, my 2 year old ...
6
votes
2answers
14k views

How do I manually boot from the grub prompt after do-release-upgrade?

I read a couple of other questions on this topic and they both pointed to the Grub2 community documentation and installing grub configs from an install disk. I had some trouble with the ...
6
votes
3answers
3k views

mount error during boot up

I get the following error during boot up. But this error doesn't get written to boot.log, as it happens in early boot stages. mount: mounts none on /dev/pts failed: Device or resource busy I found ...
6
votes
2answers
18k views

What does the “kvm disabled by bios” message during the boot process mean?

I get this message during booting of my laptop: [14.255596] kvm disabled by bios Can someone explain this?
6
votes
3answers
811 views

Does Preload in conlict with other read-ahead type processes?

I would assume not as Preload is installed to use idle priority. Though I wonder if it is a duplication of efforts with other processes installed in Ubuntu. Does anyone have any more information?
6
votes
3answers
5k views

Live CD won't boot on Lenovo ThinkPad E525

I had Ubuntu 11.04 installed for a while and that worked fine. But when I try to boot from the Ubuntu 11.10 Live CD, the screen gets black after the purple background of what used to be the selection ...
6
votes
2answers
388 views

Does booting on an external hard drive have limitations?

I'm planning to make a complete install of Ubuntu on an external hard drive in order to use Ubuntu without touching my internal hard drive. Does it have limitations? Will it perform slower than a ...
6
votes
2answers
27k views

Dual boot windows 8 and Ubuntu with Windows 8 Boot manager

I have two partitions on my hard-didk , I have installed ubuntu on my 1st partition and windows 8 later on another partition.Now i can only boot into windows 8 because it doesn't recognize Ubuntu. ...
6
votes
1answer
1k views

System displays “File system maintenance error, press ctrl+d” while booting

In my office I've Ubuntu 8.10 desktop installed and it's running for a long time. When ever the system is started, I'll get a file system maintenance error and something it's prompted for the root ...
6
votes
1answer
2k views

Xorg fails to start with Intel graphics

Ever since the installation of Ubuntu 12.10 on my laptop today it has been refusing to start Xorg when booting on occasions. Randomly it works but about 75% of the time it either gives me a black ...
6
votes
2answers
79 views

Adding program booting options to the OS

I am building a flight simulator box, off of Ubuntu 12.10, but I am trying to make the OS essentially invisible, I just want the machine to boot into the Flight Sim, which, that part isn't really that ...
6
votes
1answer
840 views

Log boot messages on tty1 instead of tty7

I'd like to see my boot messages in a different VT than 7. Can it be changed? Can I get the old behaviour - to get a login prompt AFTER all boot-up is complete in TTY1? Regards, aurocha
6
votes
1answer
3k views

What is apt-check and why does it run during boot?

So during one of the sessions at UDS-P, I discovered this cool (and useful) program called bootchart. After installing it and then running it, I analyzed it and compared it some of the results here. ...
6
votes
4answers
428 views

System doesn't boot unless I hit enter

I'm trying to remove a ~40 seconds pause that happens when my Ubuntu machine starts. During this pause, all I see is a magenta rectangle (approx 80% of screen size) over a black background. The gap ...
6
votes
1answer
2k views

How do I change the device on which ubuntu boots?

I have a laptop with an internal SSD (let's call it samsung-SSD), and I would like to install ununtu 12.04 on an external SSD connected via USB3 (let's call this one vertex2). I downloaded an ubuntu ...
6
votes
3answers
4k views

Add an entry for Ubuntu on Windows 8 boot loader

I have installed Ubuntu 12.10 by creating free space in Windows 8 and then using that space to create 3 partitions, one for SWAP, one for GRUB (mounting point is /boot) and one for the actual OS. I ...
6
votes
1answer
200 views

Option for logging in with GUI or CLI

I am using a desktop with dual boot options Windows XP and Ubuntu 12.04 and I'm able to use both the systems very well. Is there any option/method so that instead of logging in to GUI directly, ...
6
votes
4answers
921 views

Ubuntu isn't starting after unexpected shutdown

Due to power cut, My PC went off. Then, when I opened it, Ubuntu wasn't starting. I tried to run Ubuntu from live CD, it's not working. Now, what should I do? I can access BIOS and terminal from ...
6
votes
3answers
3k views

LiveCD not booting/can't install

So, I got a new laptop some days ago, and as usual I formatted it to install Ubuntu. I downloaded 11.04 and burned it on my pendrive using my old laptop (running 11.04). When I tried to boot from the ...
6
votes
3answers
2k views

How to avoid HDD spin up at system start? (Ubuntu from SSD)

Thanks to hdparm -B1 /dev/sdb my HDD does no longer spin up when powered up on boot. But after completing the BIOS POST messages and starting Ubuntu the HDD gets a signal over the SATA data cable and ...
6
votes
0answers
80 views

How to edit Plymouth in a Ubuntu version agnostic manner? [duplicate]

How can I edit Plymouth with my own theme (images and animations)?
6
votes
2answers
226 views

Strange artifacting after dusting gfx card

I have a dusty room, so I decided to use compressed air to remove the dust from throughout my computer, including my graphics card. I used the compressed air to clear out my graphics card then put it ...
6
votes
2answers
3k views

How to log boot messages?

I'm trying to check the boot log messages in the file /var/log/boot on Ubuntu 8.10 & 9.10 and I found it empty with the message (Nothing has been logged yet.). The bootlogd service is running at ...
5
votes
8answers
17k views

12.04 hangs at “checking battery state”

My 12.04 system hangs at "Checking battery state". At this stage, no commands work eg: Ctrl+Alt+f1, or Alt+f5. I ran recovery mode, and ran the following commands: sudo mount -o remount, rw / sudo ...