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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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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3 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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1answer
9 views

no kernel loaded

i installed ubuntu in my laptop, and my laptop had a registered windows 8.1 already, i unistalled ubuntu but when i restart my laptop it gives an error: "This is all I can see on the screen: GNU ...
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0answers
3 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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31 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
21 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
9 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 ...
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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
9 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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0answers
14 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
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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0answers
20 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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1answer
77 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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0answers
14 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 ...
0
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1answer
19 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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1answer
54 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
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
86 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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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. ...
0
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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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0answers
155 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 ...
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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 ...
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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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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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0answers
8 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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0answers
25 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 ...
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
13 views

Using and installing from DVDs

I downloaded the newest Ubuntu iso-file and burned it on a DVD as described here: How to Burn an ISO. In my bios I changed the boot order with CD/DVD on the first place. Afterwards, my machine made ...
0
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1answer
18 views

Lubuntu 14.04 light do will not start

I have no clue what to do Sudo lightdm /etc/modprobe.d is not a file update-alternatives: error : no alternatives for x86_64-linux-gnu_gfxcore_conf
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0answers
23 views

Installing Debian on MacbookPro, cant boot the iso [on hold]

this is my first question on AskUbuntu, but I use this forum almost everyday. This is the thing, I have a MacBook pro mid 2012 and I installed a full Ubuntu 14.04 LTS instalation on it. Removing all ...
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0answers
53 views

15.04 Mate install will not boot

After installing Ubuntu MATE 15.04 on my SSD I am always met with this error when rebooting: I have tried various partition layouts, as well as enabling updates when installing, but still no ...
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2answers
71 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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0answers
3 views

“Boot Partition not Found” While booting ATB chromium os from external hard drive

So I recently installed ATB Chromium OS build on a partition on my external hard drive. When I try to boot from BIOS it says "Boot Partition not Found" and normally boots Ubuntu. Gparted recognizes ...
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0answers
16 views

Cannot boot to SteamOS after upgrade to 15.04

A quick overview of my system: I have Ubuntu, Windows 8.1, and a Debian-based OS (specifically SteamOS) all installed. All of them booted just fine before yesterday. Yesterday, I upgraded to Vivid ...
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0answers
17 views

udev Wait for Complete Device Initialization

During boot of Ubuntu 15.04 vivid the system waits too long for a usb device to be initialized. The problem is that the reported usb has a hub (front usb ports on my cabinet) but no device connected ...
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0answers
199 views

ACPI PCC probe failed; starting version 219

The previous two questions regarding the ACPI error message do not have answers that fix my problem with the same error. I have just upgraded to 15.04 and cannot log in after a normal boot. The login ...
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0answers
292 views

In Ubuntu 15.04 can't do graphical log in

I have done clean install recently of Ubuntu Desktop 15.04. And I was able to log in to the graphical environment until I enabled "boot to text" like said there: How do I disable X at boot time so ...
0
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1answer
19 views

Can't access my home directory “Encrypted private directory is not setup properly”

Hi I'm trying to access my home directory on my laptop hard drive through a live usb. I cannot boot into the OS on the hard drive and the home and root directory is encrypted. I have the encryption ...
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0answers
27 views

Getting an “Enter Passphrase” box at boot

I have upgraded from 14.10 to 15.04 today. On 14.10, I did have my home folder encrypted. I have never had to enter a passphrase before (except the initial setting of it). Right after upgrading to ...
1
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1answer
28 views

Windows 7 does not boot after I installed ubuntu on a second drive

I installed Ubuntu on a different drive to Windows 7, but after installing, Windows 7 disappeared on the boot screen, that is I don't have options to boot Windows 7, the computer start up directly to ...
0
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2answers
437 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
21 views

Boot Ubuntu with only the built-in Mac EFI loader?

I installed Ubuntu 15.04 on a partition of my Mac Pro's HD. I can boot Ubuntu if I use refind. I don't really like refind at all. I was wondering how to boot Ubuntu with just the Mac OS X EFI menu. I ...
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1answer
25 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 ...
2
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0answers
29 views

Live USB doesn't start - GNU GRUB version 2.02

When starting my laptop, the first and only screen I see is "GNU GRUB Version 2.02~ beta 2-9 Minimal BASH-like line ...". I can't access to BIOS, nor use a bootable usb flash drive. It doesn't read ...
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0answers
62 views

Updated to 15.04, Black screen with flashing cursor.. Suspected grub issue

The black screen with the flashing cursor was completely unresponsive. I loaded up a bootable USB drive and did "Try Ubuntu". I started looking around in Gparted and found this.... ...
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0answers
19 views

cannot boot - Ubuntu 14.04 server - waiting for network configuration error

i am having problem booting into a ubuntu server. the simple error is "waiting for network configuration" The problem started when the server got turned off due to power failure. i have tried ...
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0answers
8 views

Ubuntu 14.10 server locked after cleaning /boot

My Ubuntu 14.10 server locked after cleaning /boot. It has been working without any problems for several months, but yesterday I received an error message saying that there was no space on /boot. I ...
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0answers
21 views

unable to boot linux

I have installed linux on my brand new alienware area 51. When I start it up it loads directly into windows. If I press F12 for options Linux is nowhere to be found. I have tried using boot repair to ...
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0answers
26 views

Old laptop wont boot up [on hold]

my laptop runnning ubuntu 10.04 is booting to a initramfs prompt. I tried booted off the cd but it does not see it. I can't enter bios to view the boot menu or to view boot options either. Does ...
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0answers
9 views

Ubuntu boot stuck “stoping userspace bootsplash”

I have Ubuntu 14.04. When I try to boot my PC, it hangs at the message stopping userspace bootsplash. I tried the recovery mode and repair broken packages, but it's still hangs. Can someone help?