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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151
votes
29answers
293k views

My computer boots to a black screen, what options do I have to fix it?

I am trying to boot Ubuntu on my computer. When I boot Ubuntu, it boots to a black screen. How can I fix this? Table of Contents: If you are trying to install Ubuntu If you have a dual boot ...
111
votes
5answers
403k views

How do I change the GRUB boot order?

I have both Windows 7 and Ubuntu installed on a shared machine. Because a lot of the non-developers use Windows, I'd like to change the boot order to make it easier for them. Currently the boot order ...
77
votes
11answers
57k views

How do I free up more space in /boot?

My /boot partition is nearly full and I get a warning every time I reboot my system. I already deleted old kernel packages (linux-headers...), actually I did that to install a newer kernel version ...
46
votes
12answers
55k views

How do I disable X at boot time so that the system boots in text mode?

Is it possible to disable X at boot time? I'm setting up a server so it would be nice if it wouldn't load the graphical interface every time I boot.
41
votes
4answers
43k views

Enabling Nvidia driver messes up splash screen

When you boot from live CD, or doing the first boot after installing Ubuntu, splash screen looks awesome. But as soon as you enable nvidia-current driver, installed with apt-get, splash screen goes ...
38
votes
2answers
108k views

How do I set the grub timeout and the grub default boot entry?

Hello I'm newbie 2 ubuntu 12.04 How do I set the grub time and default os(that I see at the boot time) as I'm using dual boot OS(Windows 7 and Ubuntu 12.04)
33
votes
3answers
49k views

How to get to the GRUB menu at boot-time, on a single-boot system (not dual-boot)?

This issue came up recently for me (and I've been prompted to lodge it as a specific question about it): My system is not dual-boot, I run a standard Ubuntu desktop system "on the metal" (I think ...
31
votes
14answers
25k views

How do I improve boot speed?

I have seen many videos that make Ubuntu faster, but only makes the desktop faster. I am looking to make my computer boot faster. Is their anything i can do to make Ubuntu boot significantly faster?
29
votes
6answers
50k views

How do I get my Mac to boot from an Ubuntu USB key?

If you select "USB" and "Mac" on this download page, it gives a series of command line instructions to make a USB key which the MacBook will boot into Ubuntu from. I've followed them to the letter ...
26
votes
5answers
37k views

“Waiting for network configuration” adding 3 to 5 minutes to boot time

I get the following pieces of information at the startup, takes about 3 to 5 minutes, while normally about 1 minute: Waiting network configuration Booting system without full network configuration ...
26
votes
4answers
8k views

Why does Ubuntu ask to check my hard drives every so often?

Recently, I've been compelled to restart my computer a lot. When I boot, Ubuntu now starts scanning my hard drives for errors, but assures me that I can cancel if I want by pressing 'c'. Why does ...
26
votes
2answers
77k views

Boot failure : No DEFAULT or UI configuration directive found!

I've tried to install Ubuntu on a VMWare Virtual Machine, but it never gets past the bootloader : ISOLINUX 4.01 debian-20100714 ETCD Copyright (C) 1994-2010 H. Peter Anvin et al No DEFAULT or UI ...
25
votes
5answers
41k views

How to create a bootable USB with multiple ISO images in it

What I want is to create a bootable pen drive that shows GRUB menu and I can select any of the several bootable systems from there to install/run. I have several ISO images that I want to install in ...
25
votes
0answers
4k views

How to remove the unwanted entries from the boot menu? [duplicate]

Possible Duplicate: Is there a way to remove/hide old kernel versions? When my system boots up, a big list of some 6 options are shown other than the Windows OS option. They are like : ...
24
votes
1answer
35k views

How do I disable the boot splash screen, and only show kernel and boot text instead?

I'd like to be able to disable the Ubuntu splash screen that I see on boot with the indicator meter of progress, and replace that with a text-only readout of the boot up process (such as you can get ...
22
votes
5answers
288k views

Recovering from 'grub rescue>' crash

I did a dumb thing... I forgot that Ubuntu 10.04 (Lucid) switched to Grub2 which puts a ton of *.mod files (kernel modules) in /boot/grub. I thought they were soundtrack files put there erroneously ...
21
votes
5answers
95k views

I can't get grub menu to show up during boot

After trying (and failing) to install better ATI drivers in 11.10, I've somehow lost my grub menu at boot time. The screen does change to the familiar purple colour, but instead of a list of boot ...
21
votes
5answers
48k views

How can I show or hide boot messages when Ubuntu starts?

Is there a way to easily turn on/off showing the boot messages (loading the services) when Ubuntu starts? Is it something in Grub2? I am running Lucid.
21
votes
2answers
16k views

Message “Sparse file not allowed” after installing on a btrfs filesystem

I've installed Ubuntu without creating a swap partition and with / on a btrfs.# Now I get the message "Sparse file is not allowed" on each boot. This message appears before the splash-screen. Is there ...
20
votes
4answers
10k views

Boot time is super fast, how come?

The boot time in Ubuntu is really fast. 7-10 seconds. Comparing it to my mac (which is about 30-40 seconds). How come Ubuntu is so much faster? I'm thinking that it uses a different kernel ...
20
votes
8answers
13k views

Can't boot without Flash Drive plugged in

(Sorry for my bad English) I had Ubuntu 12.04 Beta installed on my computer. When 12.04 was finally released, I made a bootable USB Flash Drive using Startup Disk Creator. Then I decided to check if ...
20
votes
8answers
19k views

Why isn't my upstart service starting on system boot?

Following on from this question, I have written a simple upstart service (/etc/init/pms.conf) for my headless Ubuntu Server 11.04 box as follows: start on filesystem and net-device-up IFACE=eth0 stop ...
20
votes
2answers
24k views

How do I boot into true text mode?

I've found ways to disable gdm or lightdm or whatever 11.10 uses, but I can't find a way to get a true text-mode boot. I want to see all the kernel messages fly by as it boots, not a stupid purple ...
19
votes
7answers
3k views

Where can I look for malware that may have been installed on my machine?

I want to analyze my ubuntu box to detect if it was been hacked. My question is: what are all the place where to look to discover if some malicious software are started ? The following is some kind of ...
19
votes
4answers
20k views

How to install an init.d script in ubuntu?

I am trying to install an init.d script, to run celery for scheduling tasks. Here is the steps I followed: copied the file celeryd and pasted it in folder /etc/init.d/ created a configuration file ...
19
votes
3answers
24k views

Lightdm not starting on boot

I installed gdm for a while as my display manager, and after removing it, lightdm does not start by itself. I instead have to login to a tty, and run sudo start lightdm. Running dpkg-reconfigure ...
19
votes
1answer
8k views

How can I disable the purple splash screen at boot?

How can I disable the purple "Ubuntu" splash screen that displays at boot before the login screen has loaded? I'd prefer to just see plain text scroll by.
18
votes
2answers
2k views

Why disable Fast Boot on Windows 8 when having dual booting?

Why is everybody keep mentioning to disable Fast Boot on Windows 8 if you have installed alongside Ubuntu? Is it something that is recommended only for UEFI machines or is it a suggestion for Legacy ...
18
votes
5answers
4k views

How do I investigate boot and partition issues?

My machine won't boot, or won't choose the right operating system when I choose it in the grub menu, what information do I need to provide in my questions so people can help me?
18
votes
2answers
9k views

How can I tell if my system was booted as EFI/UEFI or BIOS?

How do I determine whether a particular running Ubuntu system was booted using EFI/UEFI, or BIOS?
18
votes
2answers
24k views

How do I boot into a root shell?

When booting to the graphical desktop fails we sometimes are recommended to boot into a "root shell" or to boot in "recovery mode". How do I do that?
18
votes
2answers
6k views

Boot screen in low graphics/text mode

My ubuntu boot screen shows up in a strange low resolution, almost text mode, instead the usual and sleek white "ubuntu" over dark background. It's not a big issue because when GDM loads everything ...
17
votes
5answers
9k views

Where is the bootloader stored - in ROM, RAM, or elsewhere?

According to the wikipedia entry, a bootloader is a small program stored in ROM(a part of the main memory(RAM), isn't it??) which can only be read and not erased. I am a little puzzled here. Does this ...
17
votes
5answers
53k views

fsck can't find fsck.ntfs

On several machines that I've upgraded from Natty to Oneiric, I get an error every boot (one for every NTFS partition): Serious errors were found while checking the disk drive for /windows/c. Press ...
17
votes
2answers
9k views

How can I make sure one Upstart job starts before other Upstart jobs?

This is a general Upstart question, but let me use a specific case: Centrify is a NIS to ActiveDirectory gateway. It needs to load before any service that will depend the authentication service that ...
17
votes
1answer
23k views

What is vt.handoff=7 parameter in grub.cfg?

I wonder what vt.handoff=7 parameter does. I can not find any good man for that... BTW, if you have a nice descriptoon about : search --no-floppy --fs-uuid --set=root I would be happy :) grub.cfg ...
17
votes
8answers
32k views

Create USB installer from the command line?

I'm trying to create a bootable USB image to install Ubuntu on a new computer. I have done this before following the "create USB drive" instructions for Ubuntu desktop, but I don't have an Ubuntu ...
17
votes
5answers
3k views

Is Seagate's new “FAST Factor Boot” technology compatible with Ubuntu?

I'm looking at buying a new laptop and considering buying one with a hybrid HDD/SSD drive. Specifically I am looking at the new second generation Seagate Momentus XT. For some reviews look here and ...
16
votes
2answers
3k views

How can I see what happens during the boot process?

On my machine booting takes more than a minute which is annoying when I see that Windows 7 boots in 20 seconds. Here is what I get when the machine is booting. How can I see what happens when ...
15
votes
2answers
12k views

GRUB2: Use maximum detected resolution?

How do I tell GRUB2 to set its resolution (and also the one passed to the kernel) to the maximum one it can detect at time of boot?
15
votes
3answers
10k 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 ...
15
votes
1answer
610 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
3answers
65k views

How do I boot into single-user mode from GRUB?

After changing a few lines in xorg.conf, I can no longer boot Ubuntu (I assume it breaks when trying to load up X), so I need a way to boot into a single-user mode. However, there seems to be zero ...
14
votes
6answers
202k views

Fixing GRUB error: “error: unknown filesystem”

When booting into Ubuntu, I'm getting the following error with a grub rescue shell following it: Error: unknown filesystem. grub rescue> I'm not exactly sure what I did. I believe I installed ...
14
votes
3answers
140k views

How to start GUI from command line?

I've installed the following version of ubuntu om my machine. ubuntu-12.04-desktop-i386.iso But when I switch on the computer, I get command line. Ubuntu 12.04 LTS COMP-1245 tty1 Once I ...
14
votes
6answers
33k 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 ...
14
votes
5answers
8k 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
2answers
19k 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 ...
14
votes
4answers
79k views

Grub rescue - error: unknown filesystem

I have a multiboot system set up. The system has three drives. Multiboot is configured with Windows XP, Windows 7, and Ubuntu - all on the first drive. I had a lot of unpartitioned space left on the ...
13
votes
5answers
5k 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. ...