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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3
votes
1answer
749 views

The disk drive for /media/SDbackup is not ready yet or not present

On an Acer Aspire One 522 netbook, the boot process stalls with the message: "The disk drive for /media/SDbackup is not ready yet or not present. Continue to wait, press S to skip or M for manual ...
3
votes
1answer
630 views

Ubuntu 12.10 stopped during booting

Good morning, I'm very new to Ubuntu. I decided to change to Ububtu (12.10) for my old laptop (Compaq Presario R3000 with AMD Athlon XP 2800+) that previously used Windows XP. After the installation, ...
3
votes
1answer
299 views

Keyboard does not work after reboot

I was running an Ubuntu 12.04, which I later upgraded to Ubuntu 12.10 in the hopes of fixing my problem, which is as follows: When I turn on the Notebook, a Toshiba of the Satellite series, sometimes ...
3
votes
1answer
86 views

Single yellow characters on Mac when Ubuntu is booting

I have burned a Ubuntu disk and am booting from it on my Mac. However, it keeps going to a black screen with a single yellow character on a burgundy background. Usually an S and a weird ñ. When ...
3
votes
1answer
278 views

Strange Glitched Screen on Startup

I just ran the windows installer of Ubuntu and every boot up is accompanied by this nice I've used the windows installer, I've made a bootable disk x32 and x64. I've re-installed Windows to ...
3
votes
1answer
521 views

/dev/mapper/cryptswap1 problem on boot?

Just before the boot logo fades away and the login screen shows, there's a little message that says there was some kind of problem with /dev/mapper/cryptswap1 and I have to press S or M or something, ...
3
votes
1answer
464 views

Set boot option to hotkey in GRUB?

I want to set GRUB to boot up a particular option (eg, A different kernel version, different OS) when a certain key is pressed (eg, W to boot up windows with Ubuntu as default and L for Lubuntu). Is ...
2
votes
1answer
63 views

Unable to boot Ubuntu 14.04.1 LTS

I'm new to this, but here goes: I have a Sony Vaio laptop that I wanted to run only Ubuntu, so I removed Windows 8 and used a bootable USB stick to start and install Ubuntu. After doing so, I can't ...
2
votes
1answer
71 views

Dual boot Windows 7, Ubuntu 14.04 - can not load Windows

Good evening, after installing Ubuntu 14.04 as a dual boot with till now working windows 7, I can not boot windows. When I try to, a black screen appears and tells me to insert the windows ...
2
votes
1answer
45 views

How do I recover Windows 7 on my Grub menu, Ubuntu 14.04

I duel boot Ubuntu 14.04 and Windows 7 (Windows being installed first) and a couple days ago I jumped on to Ubuntu to check for updates and after it updated, I found that the Windows option had ...
2
votes
1answer
85 views

Removing Ubuntu from boot manager

I have a similar problem like in this post. The answer there suggests using the 4 commands: sudo apt-get install efibootmgr sudo modprobe efivars sudo efibootmgr sudo efibootmgr -b X -B At first, ...
2
votes
1answer
200 views

How to set up GRUB2 password in an easy way?

I need to setup password for GRUB2 on Ubuntu 14.04 LTS amd64. The setup I am trying to reach is to have [e]dit and [c]onsole options protected by password, but booting of operating system entries ...
2
votes
1answer
738 views

Cannot boot into new install of Ubuntu 14 Server

Seems like a fair few people have had similar problems, but I've tried all the suggestions in other threads to no avail. I have installed Ubuntu 14.04 on a HP ProLiant ML310e Server via burning ISO ...
2
votes
1answer
166 views

Not seeing Plymouth graphical boot-up screen until end of boot process

after reverting back from BURG to GNU GRUB2, I noticed that the purple Plymouth loading screen wasn't appearing until the very end of the boot-up process, when it flashed up for about a second. ...
2
votes
1answer
37 views

laptop will not boot after attempting upgrade to 13.10

I wanted to update my OS to the new 14.04 LTS. I was running 12.04 LTS before and followed the advice that upgrades should be done in steps. I first upgraded to 12.10, which seemed to work fine, and ...
2
votes
1answer
120 views

Enabling dual boot of windows after rewriting MBR with GRUB

Some time ago I had two operating systems on my hard disk, Windows Vista and Windows 8 and I could double boot them. Windows vista was installed on the active partition (C:\ drive). Then I formatted ...
2
votes
1answer
6k views

14.04 not detecting windows 8

First time I get ubuntu to load up without having to change secure boot, uefi, but it doesn't detect my preinstalled windows 8 on the hard drive. The option to install alongside windows isn't ...
2
votes
1answer
149 views

Ubuntu 12.04: mouse and wireless not working on startup

yesterday everything worked fine but today both the mouse/touchpad and the wireless card are not working after boot. The mouse starts to work after a sudo modprobe psmouse but i don't know what to do ...
2
votes
1answer
210 views

MacBook will not boot after Ubuntu Install

I have an old MacBook laying around not doing much, so I decided to install Ubuntu 13.04 on it, and dual boot with OSX. From within OSX, I repartitioned the drive, reserving half of the 250gb HDD for ...
2
votes
1answer
81 views

Overwritten system files

I need help to work out what damage I have done to my Ubuntu server. I ran a poorly coded script which has overwritten 26 files on my Ubuntu server. The script used sudo to run with root permissions ...
2
votes
1answer
25 views

cant get past the try or install screen

I get to the try or install screen then all goes black. Here are some images hope this helps. I dont know if I took the right pics but hope this helps. I am using an hp touchsmart ...
2
votes
1answer
70 views

Ubuntu not seeing Windows 7 in bootloader

While I was installing Ubuntu I unplugged my Windows 7 HDD so I wouldn't accidentally partition it. I installed Ubuntu, shut off my computer, plugged back the HDD, rebooted (and using the BIOS boot ...
2
votes
1answer
586 views

Ubuntu 12.04 LTS hangs (all black) before showing login screen

Attracted by the open-source philosophy and the idea of a free system from the people for the people I decided to throw away my Window 7 and replace it with Ubuntu 12.04 (I even bought it, just to ...
2
votes
1answer
456 views

Windows 7 hangs at grub's purple screen when dual booting

I have installed a new laptop (Lenovo Z510) for dual boot Ubuntu 12.04 and Windows 7 64 bit. After several trials it now works, but I have a strange effect. I always enter the Grub purple screen ...
2
votes
1answer
30 views

How do I save a modified buffer for video resolution uncommented?

I've been getting a "Signal out of range" message when trying to boot up. Press down arrow, enter to get to recovery menu and go to system root prompt. From there I run sudo nano /etc/default/grub ...
2
votes
1answer
291 views

Windows 7 hangs up after Ubuntu dual-boot installation

I recently installed Ubuntu 13.10 using the Linux Live USB creator to create a live USB and then booting/installing from that drive. Everything seemed to go smoothly. I first tested booting Ubuntu ...
2
votes
1answer
120 views

Need help booting windows after installing ubuntu dual boot

I recently installed Ubuntu to dual boot with Windows 7. The first time I booted up, I was given the option to boot to Ubuntu or Windows. If I selected Ubuntu, I would go to a GRUB menu for Ubuntu. ...
2
votes
1answer
509 views

How do I format my 24gb SSD for ubuntu?

I have an Asus Ultrabook S400CA-DB51T and I want to replace windows 8 with ubuntu. No dual boots or anything like that, just 100% ubuntu. I'm trying to make the conversion with the 13.10 image, but ...
2
votes
1answer
226 views

Booting Ubuntu 13.10 from external hard disk on both uefi and bios?

External Hard Disk Details, GPT, 150GB partition of Ubuntu 13.10. Ubuntu Newbie here please be kind. Firstly, What I would like to do is that ubuntu is able to boot in uefi computers as well as old ...
2
votes
1answer
1k views

Boot fails(sometimes) after “Switched to clocksource tsc”

I am running on Ubuntu 13.10. I had worked on Ubuntu 12.04/12.10/13.04 and Linux Mint 13/14/15 both 32 and 64 bit versions. I have faced with the same boot problem in all of these distros. After ...
2
votes
1answer
301 views

Ubuntu boot failed

I have Kubuntu 13.04 installed and it was working fine until today, it's failed to boot with mounting failed message. I've run the Boot Repair but didn't fix my problem. If anyone can help, that ...
2
votes
1answer
260 views

Dual boot Win 8.1 OK, Ubuntu 13.10 stops launch at GRUB4DOS

I have scoured the net and this site and trying everything to get this to work. I have, currently, Windows 8.1 installed and I am trying to install Ubuntu 13.10 so I can dual boot them. My hardware ...
2
votes
1answer
246 views

Remove startup password when default login is command line

When I boot up my computer, it goes straight to the command line. I modified /etc/default/grub file from GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to quiet splash text. Can someone please explain ...
2
votes
1answer
561 views

Turn off nodmraid? (For installation)

okay, I've installed Ubuntu on a 4gb USB (LiveSession I think you people will call it) When I go to install Ubuntu onto my 16gb USB from the livedisk, I followed some instructions for setting up my ...
2
votes
1answer
732 views

Lifecam Cinema prevents boot into Ubuntu 13.10

When I have the lifecam cinema webcam plugged in, then there are problems booting into the operating system (ubuntu 13.1). Since I'm new to Ubuntu, I can only describe what happens. It boots as far ...
2
votes
1answer
218 views

Grub_rescue error : unknown filesystem , error loading operating system

i had Windows 7 and Ubuntu 12.04 installed in my system. I removed ubuntu and installed it again. When i restarted the system , its showing Error : Unknown filesystem grub rescue > i used ...
2
votes
1answer
2k views

Black screen when running xubuntu 13.10 after upgrade

I have a xubuntu v12 that I updated to v13.10. Sice the upgrade I get the black screen at a startup. I can get to the console and login. How can I run it in graphic mode? I run it on Oracle ...
2
votes
1answer
2k views

Errors with USB device during boot?

Explanation I just built a new computer. Here are the specs: Motherboard: Gigabyte 990FXA-UD3 CPU: AMD FX 8350 SSD: SAMSUNG 840 Pro Series MZ-7PD256BW RAM: G.SKILL F3-1600C9Q-32GXM Initially I ...
2
votes
1answer
993 views

How to bring up wireless after it sometimes goes down on reboot (wlan0 up gives error)?

I run (K)Ubuntu 12.10/12.04 in a triple boot with Windows 7 and access the Intenet wirelessly. This works perfectly most of the time. Sometimes after a normal reboot, the wireless connection ...
2
votes
1answer
751 views

Can't boot into Ubuntu Touch on Nexus 7 (grouper)

I have been trying to install Ubuntu touch on nexus 7 (grouper,WiFi) for couple days now, and no luck. I am using manual install method (from this tutorial) because other automatic tools don't work. ...
2
votes
1answer
180 views

Installation on an UEFI system

I've been using Ubuntu for years. Now I bought a new notebook and want to install Ubuntu again but I can't. My notebook is a Lenovo S300 ieadpad with preinstalled Windows 8. I want Ubuntu to be my ...
2
votes
1answer
1k views

Ubuntu 12.04 lts won't boot after system crash + corrupt file system

Late the other night, Ubuntu crashed suddenly (wasn't doing anything unusual - just using firefox and audacity). I didn't catch the error message, and didn't think much of it - just went and rebooted ...
2
votes
1answer
570 views

if-up.d script not working?

I'm trying to make NAT routing persistent on my Ubuntu 12.04 EC2 instance (for OpenVPN; currently I need to run it every time after boot): ubuntu@vpn:~$ cat /etc/network/if-up.d/vpn-routing iptables ...
2
votes
1answer
461 views

Live USB stopped working

I had 13.04 32bit running great on a Sandisk Extreme USB 3.0 64gb stick. For the most part I use it on a Toshiba Portege laptop but sometimes on various desktops as well. I set the usb drive up with ...
2
votes
1answer
1k views

How to save boot log from failed boot?

I know I can run dmesg to look at boot errors. However, my system is failing to boot right now. It hangs indefinitely while trying to initialize hard drives. However, I can boot up into safe mode. ...
2
votes
1answer
2k views

13.04 Won't boot after update

I have a laptop with a dual-boot configuration, Windows 7 in one partition, Ubuntu 13.04 on the other. It was working fine for months, but now, after one of Ubuntu's recommended updates, it won't work ...
2
votes
1answer
3k views

Insmod error in grub: symbol not found:grub_realidt

I have a dual boot PC with Windows 7 and Ubuntu. I upgraded from 12.04 to 12.10 and then to 13.04 and since then I have not been able to boot because the PC goes into grub rescue with the error "File ...
2
votes
1answer
2k views

Grub “quiet splash” + linux-image-3.2.0-40-generic + full disk encryption = boot failure

From this morning the boot process on my laptop is no longer working. The only relevant change from yesterday (when all was working fine) has been a kernel update (from 3.2.0-39-generic to ...
2
votes
1answer
54 views

Need to know what program is writing to the console on start, logout and shutdown

I would like to know what program is responsible for writing messages to the console during the start, logout and shutdown process. What I'm referring to is that black console that comes out and spews ...
2
votes
1answer
101 views

Why does Ubuntu always boot regardless of boot priority?

I am running Ubuntu 12.10. I thought I had installed 64-bit but somehow I had installed 32-bit. I wanted to install 64-Bit Ubuntu over the current installation with my flash drive but whenever I ...