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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19
votes
6answers
16k views

How folders created in /var/run on each reboot

In recent ubuntus (specifically, what interests me the most is 12.04) /var/run is tmpfs, and thus I assume it starts empty with each reboot. Yet, I see there some folders, like /var/run/mysqld and ...
19
votes
2answers
29k 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 ...
19
votes
7answers
52k views

Create USB installer to install Ubuntu 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 ...
19
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 ...
18
votes
5answers
24k 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 ...
18
votes
2answers
29k 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?
18
votes
4answers
41k 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 ...
18
votes
2answers
5k 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 ...
18
votes
11answers
63k 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.
18
votes
3answers
14k 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 ...
18
votes
6answers
17k 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 ...
18
votes
8answers
41k 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 ...
18
votes
2answers
7k 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 ...
18
votes
5answers
224k 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 ...
17
votes
8answers
33k 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 ...
17
votes
2answers
12k 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?
17
votes
2answers
33k views

“intel_rapl: no valid rapl domains” message upon boot

I install fresh Ubuntu 14. 04 server under ESXI 5.1.0. During my installation I did not get any erorrs or strange things. My problem is when I boot machine at console screen I get messages like [ ...
17
votes
6answers
49k 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 ...
17
votes
4answers
39k 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 ...
17
votes
2answers
13k 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 ...
16
votes
8answers
56k views

SMBus/ BIOS error while booting Ubuntu 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 ...
16
votes
2answers
28k 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
2k 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 ...
16
votes
1answer
1k 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 ...
15
votes
3answers
62k 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?
15
votes
3answers
69k views

error: file '/grub/i386-pc/normal.mod' not found

error: file '/grub/i386-pc/normal.mod' not found. grub rescue> What can I do? I just sit and stare at it. I found my old netbook (Dell Inspiron 1010) which I have not used for about four years. ...
15
votes
5answers
8k 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. ...
15
votes
4answers
101k 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
3answers
8k views

Where is log file from rc.local?

I have some commands to in my rc.local. I know that they are failing. How can I get log file with messages produced by executing rc.local? Where is it located? I have checked the /var/log/boot.log. I ...
15
votes
3answers
28k 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 ...
14
votes
7answers
50k views

How to start Virtual box machines automatically when booting?

I have many Virtual box machines in my Ubuntu12.04, each time i shutdown or reboot i have to start them one by one. I wanna a help in writing script for automatically autostart the VBox machines ...
14
votes
6answers
23k 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
14
votes
12answers
42k 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 ...
14
votes
1answer
6k 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 ...
14
votes
3answers
89k 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" ...
14
votes
3answers
14k 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
3answers
30k 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 ...
14
votes
1answer
43k views

32-Bit UEFI Boot Support

I recently purchased a Dell Venue 8 Pro. I have read online about what it needs in order to boot into Ubuntu or any other Linux distro. From what I have gathered, what really needs to happen is ...
14
votes
2answers
4k 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
3answers
25k 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?
13
votes
4answers
26k views

“Not a COM32R image” error when trying to install from a USB key

Not a COM32R image boot is a message that the console infinitely keeps spitting out when I try to install Ubuntu 10.04 from a USB. I created the USB using the StartupDiskCreator in 11.04. What is ...
13
votes
1answer
13k views

How do I find the last logged system boot and shutdown times?

I'm a Rails developer working on a web application on Ubuntu Server 10.04. Due to internal requirements, I was asked to find the last 10 system boot and shutdown times... I have no clue where to find ...
13
votes
1answer
2k views

Why is there an “update-grub” and a “update-grub2” command? [duplicate]

I updated my linux machine (dist-upgrade) and the linux-headers were updated. Suddenly the Windows option in GRUB was gone (booting parallel). This was solved by issuing "update-grub" everything works ...
13
votes
8answers
117k 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 ...
13
votes
1answer
7k 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 ...
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 ...
12
votes
4answers
11k 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. ...
12
votes
3answers
18k views

How to run skype at boot time?

I use Ubuntu 11.10 and I have to start skype manually every time I log on. Is there a way to run automatically run skype at boot time? I prefer GUI but console is ok too.
12
votes
1answer
14k 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 ...
12
votes
2answers
13k 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 ...