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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Dual Boot Gone Wrong

So I tried to dual install Ubuntu 14.04 on a computer that already had Windows 7. Definitely got in way over my head. First I booted Ubuntu from a flash drive. Things went smoothly during the ...
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1answer
21 views

Can't Load Windows 8 after removing Ubuntu Dual Boot

I deleted Ubuntu and I can't load in windows 8 I get grub rescue. I have the installation disc for windows 8 and don't want to reinstall Ubuntu. I had this b4 but can't remember how I did it. Ubuntu ...
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2answers
414 views

15.04 - very slow boot

After upgrading to 15.04 , one computer is very, very slow to boot -several minutes, instead of ~20sec. I do not know if this helps: graphical.target @1min 40.961s └─multi-user.target @1min 40.961s ...
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0answers
13 views

Problem Dual Booting from grub into Windows 7

I am fairly new to linux I have a friend who is helping me out quite a bit and wanted me to come here to search for the next solution. I wiped my laptop which is a Dell Inspiron 3537 and loaded an OEM ...
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1answer
17 views

no kernel loaded

I installed Ubuntu on my laptop, which already had Windows 8.1 installed. Then I uninstalled Ubuntu but when I restart my laptop it boots to GRUB recovery: GNU GRUB version 1.97 beta 4 [Minimal ...
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1answer
100 views

Fresh Kubuntu 15.04 installation hangs on boot

I've just done a fresh installation of Kubuntu 15.04 on my Macbook Pro retina (june 2014) and it seems to get stuck somewhere during booting. I suspect it has troubles with the wireless adapter in my ...
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2answers
50 views

Is it safe to remove old vmlinuz.* files from /boot

In /boot there are a lot of vmlinuz.* files going back 4 years. Is it safe to remove some of these? Edit: Most seem to have congig-3.* and System.map.* files to go with them. I would probably want to ...
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0answers
9 views

Ubuntu 14.04.2 i386 boot hang after installation but fix by using live USB's initrd.lz

Linux newbie here, and would like some support from the community for a boot problem I am seeing. I recently put Ubuntu 14.04.2 (i386) on a AMD Kabini AM1 5350 CPU + Gigabyte AM1M-S2H mobo using live ...
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0answers
13 views

GNU GRUB after Re-install

I just re-installed ubuntu because I "accidentally" (goofed off and removed some important system file stuff) ruined ubuntu. I picked the top option, something along the lines of "erase ubuntu ...
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3answers
9k views

Getting “boot error” when trying to boot from USB

I'm wanting to try out Ubuntu, so followed the instructions for how to install Ubuntu onto a USB. I downloaded the .iso file, then the pendrivelinux 3 part process to make the USB bootable. I can ...
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1answer
36 views

can i add space to sda1 boot from sda2 extended

I tried getting help in another post (SDA1 almost full. What do i do? [duplicate]) and was told it was a duplicate.everyone was helpful and i tried the suggestions as well as going to a post on how ...
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0answers
18 views

Ubuntu 15.04 network manager causing slow boot

Since upgrading from 14.10 to 15.04 a few days ago the boot time, grub OS screen to login screen, has increased from 12 seconds to about 40. This is my systemd-analyze critical-chain output: The time ...
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0answers
14 views

Ubuntu can't recognize cd-rom

i was trying to boot a os using cd-rom, but i recognized my laptop can't use my cd-rom so i come on terminal and i ran this: sudo lshw -C disk and the output was: *-disk ...
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0answers
8 views

Where did 3.16.0-31-genric go?

Something I noticed when booting my computer is the fact that I have to edit the Ubuntu information when logging on. Every time I reboot I get an error message that says Ubuntu cannot find: ...
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0answers
33 views

Unknown files of 6GB each with random names in home directory?

I am Ubuntu14.04LTS user, using it in dual boot with windows8.1. I see 2 unknown folders of 6GB each in home directory, screenshot I delete those files and it went to Trash folder as you can see in ...
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0answers
12 views

Where to report startup / suspend errors (Kubuntu 15.04)

I have a new HP Pavilion All-In-One computer and I've installed Kubuntu 15.04 on it. But when I power it on and take the default boot choice of Ubuntu, I see a series of full screens of different ...
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6answers
45k views

Install Ubuntu in UEFI mode (unable to boot from USB)

I recently bought a Dell Inspiron 15R SE with Windows 8 (64 bit) pre-installed (UEFI supported). I want to install Ubuntu in dual boot with Windows 8. I tried to follow all instruction here : ...
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0answers
27 views

Upgrade to 15.04. Now asks for private key password at boot

I just upgraded Ubuntu from 14.10 to 15.04 and when I boot I now get a question before the login screen that asks me for my private key password. I didn't quite now what this password was so I've ...
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0answers
8 views

Unable to boot “ERROR: No configuration file found” - NOT USB STICK OR INSTALL

I updated my computer and it updated to the latest kernel. After a restart I get the following: ERROR: No configuration file found No DEFAULT or UI configuration directive found! boot: If I type ...
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0answers
11 views

'Bus cycles' unavailable

Sometimes when I am booting I stuck on this... And nothing happens. I have windows in dual boot and it doesn't boot either. Now I booted when I pressed and hold power button but not as long as I want ...
5
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2answers
6k views

GRUB EFI loader cannot find its config file in /boot

I installed Ubuntu, but when I boot I go straight to Grub rescue command prompt (GNU GRUB version 2.00-19ubuntu2.1). I can get a Grub boot interface by typing: set root=(hd0,5) set ...
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0answers
22 views

Udev can't create persistent rules, read only file system

After upgrading to 15.04 I tried different drivers for my wireless card, so I thought to refresh the udev rules and deleted the /etc/udev/rules.d/70-persistent-net.rules file, thinking it would be ...
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0answers
9 views

mountall: error while loading shared libraries: libudev.so.0

I don't know how to fix this. My system won't even get past the loading screen. When I press F1 on the Ubuntu splash screen it shows me log with this message. mountall: error while loading shared ...
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2answers
45 views

Ubuntu Live USB won't boot, “Failed to load COM32 file menu.c32”

I'm hoping to revive an old netbook I have laying around by installing Linux on it. I did what I gather most of us are supposed to do: I created a Xubuntu 14.10 Live USB with Unetbootin, plugged the ...
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0answers
12 views

Lubuntu wont start without a random cd/dvd/usb inside

I think I just broke everything. Lubuntu wouldn't install without the USB plugged in and when It did install, it set up but I couldn't see it when I pressed f12. After 3 failed atempts I tried to ...
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1answer
5k views

how can I fix error: hd0 out of disk?

I am running Ubuntu 12.04 on a netbook - Acer AS 1410. After a download session, I restarted the computer and it said: error: hd0 out of disk. Press any key to continue... I pressed ...
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0answers
16 views

No boot device found - boot repair

My HP laptop is not able to find a boot device at startup. I've looked at other threads to find a solution but non have been able to help so far. Some background info; I upgraded to Ubuntu 15.04 ...
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0answers
181 views

Ubuntu 15.04 SLOW BOOT

I upgraded to Ubuntu 15.04 from 14.10 two days back. The boot time has increased a lot since then. I installed the boot-up manager(bum) and deselected Bluetooth and scanner support options. The boot ...
2
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1answer
79 views

Swap doesn't seem to mount after update

I updated to Ubuntu 15.04 and now my swap partition does not seem to mount. I'm not an expert, but it looks like the partition does not seem to have a UUID anymore. How do I get the swap partition to ...
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2answers
22 views

How to change grub2 color? [duplicate]

I want to change the grub2 menu color to black and white, also if it's related I wanted to change the purple color that appear between transitions when the PC boot. I'm using Ubuntu 15.04.
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1answer
25 views

Ubuntu Server 14.04 does not boot upon restart following fresh installation

I'm trying to install Ubuntu Server 14.04 on an old system I have rebuilt (Intel Core 2 Duo with 4GB RAM, PATA HDD). I've succeeded in installing Ubuntu using a USB stick and the system reboots to ...
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0answers
17 views

Ubuntu wont boot under systemd

I have just installed Ubuntu 15.04 on my laptop, the installation went fine but Ubuntu will not boot. Using the default boot options I get stuck at a prompt to enter an encryption passphrase that I ...
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2answers
73 views

How to get Ubuntu 14.04 to detect and connect to open WiFi on startup from USB stick

I'm an 8th grade science teacher and I have recently been given 17 mini dell computers. All are in great physical shape, however, none of them have an operating system or hard drive. I can load Ubuntu ...
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1answer
58 views

Long boot after upgrade from 14.10 to 15.04

Its take much longer after the upgrade from 14.10 to 15.04 but its not the case when i boot from a live USB. Do I need to purge or reinstall anything? I prefer the systemd method and I have the dmesg ...
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2answers
10k views

How can I change the purple background color of Ubuntu plymouth boot screen?

I'd like to change the background color of the purple plymouth boot splash to another color, how can I do this?
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1answer
15 views

my PC showing grub rescue

Two operating systems are installed on my laptop: first Ubuntu and second Windows 7. But both are in same drive, that is the C: drive. I shrank 10 GB off the volume of C: drive and created a new ...
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1answer
304 views

Ubuntu 14.10 does not shut down on Acer Extensa 2509 notebook

I am currently running into a problem with my new Acer Extensa 2509 notebook. After installing Ubuntu 14.10 onto the hard drive, I was not able to shut down my live USB drive. After a hard reset, ...
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1answer
3k views

How to solve the error of “Gave up waiting for root device” at boot?

I am using Lubuntu 13.10 which has been working fine for about a month, but suddenly my desktop froze and since then I get the following error at boot which doesn't allow me to use it: Gave up ...
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0answers
101 views

Persistent Ubuntu 14.04 USB fails to boot after creation of ext4 casper-rw partition

This question is related to IMMERZL's answer in the series "How to make a persistent live Ubuntu USB with more than 4GB". I used UUI to create the persistent bootable USB using 14.04.1 amd64 ISO. I ...
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0answers
11 views

Disable automounting of hard disks on ubuntu live

I have an ubuntu live USB. When I try to boot it on a computer with a SATA hard disk, it automounts the hard disk and that would seem to corrupt the windows 7 installation which is on the hard disk. ...
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1answer
26 views

Why do I keep getting GNU GRUB?

My computer is not a dual-boot it is just Ubuntu. Why when I boot up do I get the GNU GRUB menu? It has options like recovery mode and stuff.
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1answer
4k views

VBOX on ubuntu Could not read from Boot Medium! System Halted Error

im using virtual box on ubuntu . and win xp as a guest i facing a problem im getting "Could not read from Boot Medium! System Halted Error" here is a pic of my vb settings for that vmacine i had ...
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0answers
18 views

Ubuntu stuck on the kernel log at boot

I've just upgraded my Gnome version, using the gnome3-staging PPA. Since it is still a little buggy, I've done a ppa-purge to come back to the 3.14 version shipped with Ubuntu 15.04. After a ...
0
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1answer
16 views

Boot-sector size is constant?

I read that first sector on any partition needs to be reserved for bootloader, regardless of weather it is used or not. But sector sizes changed from 512 to 4096 bytes. So how much space must really ...
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0answers
27 views

How can I change boot splash theme, in Ubuntu 15.04? [duplicate]

I would like to alter the splash in Ubuntu 15.04, 64 bit.
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2answers
493 views

Ubuntu 15.04 doesn't start with nvidia driver

Hello I upgraded from Ubuntu 14.10 to 15.04 and when I use the proprietary Nvidia driver Ubuntu doesn't boot. It shows "Starting 219" on my secondary screen and on my primary screen it shows something ...
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0answers
9 views

How to boot into Kubuntu if i have two disk?

at me is kinda driffent how i thought, after i installed kubuntu i rebooted my pc and it only boot into my Windows 7, if i boot my aother disk it will boot back into window and here my disks: ...
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1answer
1k views

Ubuntu 15.04 with Kubuntu Plasma Desktop not booting

I upgraded to Ubuntu 15.04 today. The Laptop booted fine. However, after that I also installed Kubuntu Plasma Desktop from the Ubuntu Software Center. On booting default “Ubuntu” I get a black blank ...
3
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1answer
43 views

Issue installing Ubuntu via USB - no the normal install instruction forums have not helped

I'm a new to Linux operating systems and am having some problems installing Ubuntu 14.04.2 I am trying to install it on a HP laptop running Windows 8.1, I have created a separate partition of my hard ...
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0answers
26 views

Rebuild a vaporized dmraid array using mdadm

Executive Summary While upgrading from Utopic to Vivid, my system removed dmraid, which I was using as the RAID controller for the array that I booted from. How can I rebuild the array using mdadm ...