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

learn more… | top users | synonyms (2)

17
votes
4answers
36k views

How to understand Ubuntu UEFI Secure Boot install?

Now that Secure Boot is supported, what special instructions does one have to follow to install Ubuntu on a UEFI Secure Boot enabled PC shipped with Windows 8? As I understand, Ubuntu >= 12.04.2 ...
16
votes
3answers
12k views

How to boot from ubuntu live usb with 'try ubuntu' directly?

I created an Ubuntu 10.10 live usb with persistence feature. And it works well on my PCs. But one thing annoys me is that each time I boot from live usb, I have to choose between "Try Ubuntu" and ...
16
votes
2answers
23k views

/casper/vmlinuz: not found

When I start Ubuntu and chose one of the settings it says: /casper/vmlinuz: not found I have Ubuntu on a USB drive. I used this USB creator: http://www.linuxliveusb.com/ I have done this 2 times ...
16
votes
1answer
617 views

boot up problem (14.04 + GRUB + Swap + Nvidia) - with pictures

When I start my laptop, it takes as much as 7 tries to get past the place where the swap gets mounted; if anyone is looking over my shoulder then it becomes 15 tries! My laptop is a lenovo W520 with ...
15
votes
3answers
44k views

My main username is not in the sudoers file

I was trying to install some software/edit files with my main username(not root) But I got this error [X] is not in the sudoers file. This incident will be reported. I tried to edit the /etc/sudoers ...
15
votes
6answers
40k views

How to boot live iso images?

I found that it can be done with loopback as follows menuentry "Lucid ISO" { loopback loop (hd0,1)/boot/iso/ubuntu-10.04-desktop-i386.iso linux (loop)/casper/vmlinuz boot=casper ...
15
votes
4answers
80k views

Any way to manually make a bootable USB from ISO?

I've been using Unetbootin but it occasionally fails to create a bootable usb the way I need it to, especially with the newer versions. Is there a way I could extract the iso myself?
15
votes
5answers
191k views

Grub rescue prompt, repair grub [duplicate]

I recently repartitioned my hdd and I have damaged grub on my system. On boot I get the grub rescue prompt and I have to go through the following steps in order to boot normally: set ...
15
votes
1answer
797 views

How To Get Plymouth To Display Boot Messages When Booting?

I would like to know how to create a splash for Ubuntu Maverick with boot messages being displayed when I boot as well as a progress bar and a spinning logo. Or, if possible, how to edit a splash ...
14
votes
1answer
40k views

How do I install Ubuntu on a VirtualBox client from an ISO image?

I have the ISO image file (that is, *.iso), and I am trying to boot my VirtualBox installation with this image. Is it possible? I know how to mount my ISO image to my filesystem (on my host machine), ...
14
votes
2answers
21k views

How to edit ISO Images (Including Bootable ISOs)

I am looking for tools for Ubuntu that can be used to EDIT ISO Images. Including ISO images that are bootable like Ubuntu and Windows ISOs. Not only edit but save the edited ISO and can still boot ...
14
votes
5answers
10k views

Mount an external drive at boot time only if it is plugged in

I've got an entry for an external harddrive in my fstab: UUID="680C0FE30C0FAAE0" /jgdata ntfs noatime,rw But sometimes this drive isn't plugged in at boot time. This leaves me half way ...
14
votes
3answers
10k views

How can I reduce the number of TTYs?

I don't need 7 TTYs (or do I?). So how do I reduce this number to 3?
14
votes
2answers
3k views

Customizing Ubuntu to run from RAM only, within GRUB options

I'm interested in exactly this up, now let me explain what would like to do with this. I'm preparing to buy 32GB of RAM and already have Quad Core. My idea is to implement another option in GRUB that ...
13
votes
8answers
25k views

How to fix very slow Ubuntu booting?

When I boot up my my newly installed copy of Ubuntu on my custom rig w/4GB DDR3 RAM and a 3 Ghz Intel Core i7, it takes about a minute and a half at the purple loading screen, and then after logging ...
13
votes
5answers
6k views

Getting back Ubuntu's default boot splash

I am a Gnome user. Just out of curiosity, I installed the package kubuntu-desktop to check out the latest KDE. The package has hijacked and replaced the nice ubuntu boot splash with the blue KDE one. ...
13
votes
5answers
16k views

Start synergy on boot?

I use synergy. I would like to synergy to start as soon as I turn on my computer. How do I do that? To start synergy, the command is: synergys --config ~/.synergy.conf
13
votes
1answer
692 views

How can I ensure a service is disabled on boot? [duplicate]

For some reason I need to disable a system service on boot. In my case this is the Avahi Daemon. I just don't want it to start on boot. In previous Ubuntu releases (e.g. 12.04) I could do sudo ...
13
votes
2answers
7k views

How do I find the boot parameters used by the running kernel?

Is there a way to find out with what parameters did the kernel boot? For example if I specify noexec=off at the grub command line? Can I see this sort of info after the system has finished booting?
13
votes
1answer
22k views

What do the different Boot Options mean? (i.e. acpi=off, noapic, nolapic, etc)

I've been having issues installing 11.04 on my new laptop, the solution was to enable any of these boot options: acpi=off noapic nolapic But, what do these options actually do? What sort of ...
13
votes
1answer
8k views

Where are fsck results logged at boot time, after /forcefsck?

When working remotely I set a server to force an fsck at boot time with the sudo touch /forcefsck command and rebooted. After it restarted I checked in /var/log/fsck for the results of the disk ...
13
votes
3answers
2k views

External USB drive won't stop after shutdown

After shutdown I notice that both the USB hub and the external USB drive remain active (lights on): the next time I try to boot the system hang after grub and I have to do a hard reboot. After that ...
13
votes
1answer
6k views

Is there a command-line alternative to usb-creator-gtk?

I'm trying to create a bootable USB stick of ubuntu-11.10-desktop-i386.iso using usb-creator-gtk on my ThinkPad X220. Usb-creator-gtk appears to work OK, but the resulting stick fails to boot either ...
12
votes
3answers
19k views

How to enable boot messages to be printed on screen during boot up? [duplicate]

How to enable boot messages, kernel messages and other logs of various services to be printed on screen during boot up?
12
votes
3answers
45k views

How do I boot into the console and then launch the Ubuntu desktop from it?

At the Ubuntu login page I have to hit Ctrl+Alt+F1 to be able to login as an user using the command line. But how do I get to the command line first and then start the Ubuntu desktop from it?
12
votes
8answers
44k views

How do I hide the GRUB menu showing up in the beginning of boot?

I stopped Dualbooting and I dont want to have to choose the OS anymore and just have it load Ubuntu like normal like before? Any help is appreciated.
12
votes
12answers
31k views

Blank screen, blinking cursor on boot

Occasionally my Ubuntu 10.04 PC won't boot properly. It gets past Grub and then stops at a blank screen and blinking cursor. From what I've read, this blinking cursor screen is presented by Ubuntu ...
12
votes
8answers
97k views

How to boot Ubuntu from EFI/UEFI?

I installed Ubuntu 11.10 on a newly bought Lenovo ThinkCentre Edge 71 (model: 1577-G3G) with EFI boot enabled. I opted for the Use Entire Disk option. Even though the installation process went without ...
12
votes
8answers
29k views

Hide GRUB2 menu UNLESS you hold down Shift key: how to make this happen?

I have a Ubuntu - Windows 7 dual-boot set-up, and I would like to have it that my laptop would boot up Windows 7 unless I press down the Shift key right after boot and bring up the Grub2 menu from ...
12
votes
1answer
21k views

Ubuntu not booting: “Could not write bytes: broken pipes”

The problem When I boot Ubuntu 11.10, the boot process hangs, before even getting to the login screen of the display manager, with the message Could not write bytes: broken pipes at the top of the ...
12
votes
1answer
613 views

Why is plymouth required?

Why is plymouth so important that cannot be removed on ubuntu desktop 11.04? It has priority required and mountall and cryptsetup depend on it. I do not have really any need to remove it, but a ...
11
votes
4answers
46k views

Trying to boot from usb [duplicate]

Possible Duplicate: Boot failure : No DEFAULT or UI configuration directive found! I have similar issues but none with the 12.04 build. Im trying this on a dell d610 laptop with a bad hard ...
11
votes
4answers
9k views

Distro that I can load into RAM?

Is there a modified version of Ubuntu that I can choose to load to RAM on start up? Kinda like the LiveCD, but that can be easily modified (ie: I can install stuff) when I choose to boot from disk. ...
11
votes
3answers
14k 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 ...
11
votes
1answer
12k views

Why dd is not a reliable command to write bootable .iso files to USB thumb drive?

As the answers here indicate Ubuntu .iso s are not expected to boot if copied with dd to a USB thumb drive. Now my question is why is so that some Linux distributions have the option to directly write ...
11
votes
2answers
11k views

Can I disable the Ubuntu splashscreen?

I wanted to know if it is possible to disable the splashscreen at boot. The one where is says Ubuntu and it has the orange dots moving. I want to remove that and be able to see the commands like what ...
11
votes
6answers
24k views

Upgrading from 13.10 to 14.04 broke Grub

I have a dual boot Ubuntu + Windows 8 on an UEFI system. Everything was ok until I upgraded to Ubuntu 14.04 from 13.10. Now what I get when I boot the pc is a grub rescue screen like this with the ...
11
votes
3answers
8k views

“An uncaught exception was raised:Invalid version string 'GNU/Linux'” when creating bootable USB stick

Still unsolved bug here and bug -report here, bug in 12.04 and apparently in many other versions. How can I create an bootable USB -stick with Ubuntu?
11
votes
2answers
29k views

SMBus/ BIOS error while booting Ubuntu 13.04 in VirtualBox

I am trying to boot Ubuntu 13.04 in VirtualBox, but every time I boot, I get an error that says "SMBus base address uninitialized - upgrade BIOS or use force_addr=0xaddr". This happens right after I ...
11
votes
2answers
66k views

Boot drops to a (initramfs) prompts/busybox

I am running an HP pavilion dv6000 dual boot win7 and Ubuntu 12.04. (well, up until today). After a reboot, the boot process drops to the BusyBox shell and I end up at the prompt: BusyBox v1.18.5 ...
11
votes
2answers
506 views

What does init on Ubuntu do?

I already know that init is the magical program that is needed for booting your computer and managing runlevels, but what is it's real purpose? Why do we even need init in the first place? Why can't ...
11
votes
2answers
11k views

I can't boot into a usable system after updates. What should I do?

Due to updates, my machine can no longer boot properly. I am no Ubuntu guru. I do not have a week to spare diagnosing the issue. I just want to retrieve important data from this machine's hard drive ...
11
votes
4answers
17k views

Reboot during update, glibc error: libc.so.6: version 'GLIBC_2.14' not found

While upgrading from 11.10 to 12.04 the upgrade stalled because it said xscreensaver needed to be uninstalled. I tried to open a terminal but the system wouldn't respond. So I did a hard boot and now ...
11
votes
2answers
15k 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 ...
11
votes
1answer
6k views

How to set up a loop device at boot time?

I want to set up a loop device at boot time. I wonder what is the best way to do this. I've searched for it on google. Some says adding a udev rule, some says putting a scripts in /etc/init.d, some ...
11
votes
3answers
6k views

How do I configure WakeOnUSB properly?

How do I configure Wake-On-USB properly on a 10.04 or 10.10 Ubuntu (2.6.36 and higher if needed)? (Wake-on-USB is when the computer is asleep and for example a USB Keyboard event wakes up the ...
11
votes
4answers
7k views

Slow boot after clean install of Natty

The time have risen from 20-25 sec in Meerkat to 35 sec in Natty. I do not know if it is ureadahead but made a bugreport of it in launchpad. I tried Fedora shortly before installing Natty. They use ...
11
votes
3answers
821 views

Any way to clean up the look of the shutdown/logout/restart process?

So, I've given up trying to configure my system (ubuntu 10.10, open source ATI drivers) to shutdown/logout/restart gracefully. Whenever I do any of the three, all I get is an ugly ubuntu logo with ...
11
votes
2answers
241 views

LTSP thin client to single user mode

Is it possible to boot a LTSP thin client to single user mode? I've updated the default entry under /var/lib/tftpboot/ltsp/i386/pxelinux.cfg to read as follows: - append ro initrd=initrd.img ...
11
votes
0answers
5k views

How do I stop or start the desktop from loading on bootup? [duplicate]

I occasionally want to use my Ubuntu machine as a desktop but mostly as a headless file server. Before I upgraded to Oneiric, I used rcconf services to disable or enable the desktop. In Oneiric I ...