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 LTS 14.02 boot failure

I upgraded to Ubuntu LTS 14.02 on my Lenovo T400. After the upgrade, everything seemed to be OK except it could only be put into sleep mode a limited number of times and then refused to do so after ...
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14 views

Laptop Won't Recognize Working Hard Drive

The drive works. I plugged it into my brand new computer and it worked just fine. I installed Ubuntu while it was plugged into my desktop. I encrypted the OS and my home folder. After I took it out ...
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2answers
63 views

ubuntu on external drive

I installed Ubuntu on an external hard drive, but now I need the hard drive to boot into Windows. I made sure that the boot device was on my local drive when I created the partition, but it still ...
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1answer
26 views

No Windows Boot Option In Ubuntu

So I recently installed Ubuntu, but I didn't give it enough space. It started acting weird, so I restarted the computer. Afterwards, it just had a black screen after it started up. I tried the Windows ...
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0answers
14 views

Make UBUNTU USB stick on OS X to boot non mac netbook

I have a fairly old netbook with no cd drive that is capable of being booted from USB. Right now there is no OS installed and I only have a mac to create the USB stick from. My question is simple I ...
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1answer
33 views

Log In lost due to memory loss [duplicate]

Following illness when Ubuntu part installed on 64 bit AMD system I now do not know my Log In, can this be recovered/changed, or shall I wipe the hard drive and start again? I have reset the ...
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2answers
39 views

Grub not finding Windows partition

I recently had a dual boot system with Ubuntu 14.04 and Windows 8.1, separated by partition. I had to do a clean install of Ubuntu on the partition with Ubuntu on it due to some problems I had with ...
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1answer
25 views

how to install OS in pandrive and run on any pc or laptop? [duplicate]

My laptop is currently not being formatted properly. Every time I try to install any operating system it installs, but before I can move to drive, it crashed and gets back to boot screen, it doesn't ...
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1answer
128 views

Black Screen on boot fresh install 14.04.2 [duplicate]

Ive looked around and can't find an answer to my question. I just installed Lubuntu with a live USB and now when i try to boot the only thing i get is a black screen it appears its working but i cant ...
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2answers
57 views

Login problem in Ubuntu 14.04

I have a little problem with Ubuntu: when i type the password to log in nothing happens, the only thing that happens is something similiar to a refresh (I'm using Ubuntu 14.04 LTS). When i type in a ...
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1answer
25 views

Which X509 Certificate for Ubuntu Do I Require for Shim UEFI Key Management

Can people please let me know what selections I need to for this - I select enroll from disk and then am presented some .efi entries to choose from. Any ideas/help on what I need to do here as I am ...
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0answers
13 views

USB booting on a mac

I am quite familiar with Linux/Ubuntu and my friend recently asked if I could set it up on his computer. I am thinking that I will install Ubuntu onto a USB of his so that he can boot into whenever he ...
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1answer
46 views

Switching disks make boot fail

I have two SSD disks with Ubuntu 14.04.02 on both. They don't share the UUID or anything, and they are never plugged at the same time. This is a new disk I got last month and did a fresh install. ...
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1answer
22 views

What key for Ubuntu option during pre boot (small twist)?

This question is close to others on the site but I still haven't found an answer. I have a Toshiba Satellite with Windows 7. Ubuntu has been installed on it and I have used it before. I haven't ...
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0answers
22 views

Configure the boot menu in a dual boot system through Ubuntu

I have installed Windows 8.1 alongside Ubuntu 14.04. The problem is that once I turn on the PC the boot menu is completely messed up. Sometimes it appears the typical black menu and sometimes it ...
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2answers
58 views

Dual boot windows 8.1 stuck

I have windows 8.1 and Ubuntu 14.04 in my system. I have used boot repair tool in Ubuntu to fix the grub. Now the boot menu is showing( Before it was not showing). I am also able to boot to Ubuntu. ...
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0answers
158 views

will ubuntu 15.04 have UEFI 32-bits UEFI boot support?

Ubuntu 14.05 doesnt have UEFI 32-bits UEFI boot support. And apparently nobody got it working properly with Ubuntu 64-bits. Thats a real problem now for all new laptops which support 32-bits OS and ...
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0answers
55 views

Installed Ubuntu 14.04.2 alongside windows 8, now windows 8 won't boot at all

I tried Boot repair, rEFInd, and almost every other option that was presented in these questions that were already answered, but Windows 8 won't boot at all. When I select Windows 8 upon booting, it ...
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1answer
54 views

How to access BIOS settings with EFI?

I have a new PC, based on a Gigabyte H81m motherboard. With no hdd, I can access BIOS settings by pressing DEL at startup. When I install Windows 8.1 with EFI boot, to access BIOS settings I have to ...
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0answers
11 views

After Ubuntu Update I get a black screen [duplicate]

After I updated from Ubuntu 14.04 to 14.10 I select the entry on the grub2 menu, then it shows me some checks then goes to a black screen with a flashing "_". Previously I installed ubuntu then ...
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0answers
68 views

encrypted btrfs RAID1 array fails to mount at boot - open_ctree_failed

I have an encrypted btrfs RAID1 array set up as my /home directory on a fresh install of Linux Mint 17.1. At the Plymouth screen during boot, I enter my password for the two drives, and then receive ...
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1answer
56 views

Ubuntu 14.04 Boot Order Problems - efibootmgr

Trying to work out boot order at the moment and not sure if I need to some how change this order, i.e.: I ran the command: sudo efibootmgr -v BootCurrent: 0001 Timeout: 2 seconds BootOrder: ...
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1answer
45 views

What can be done to fix partition problems?

Attempted to install Ubuntu 14.04 on a separate partition from Win7 64bit, but something went wrong with the install, and I am no longer able to boot from either the Win7 or the Ubuntu partition. ...
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25 views

After installing ubuntu 14.04 can't boot any OS neither from USB and DVD

Recently i installed ubuntu 14.04 without any partiotion and i decided going back on windows 8.1 ,but when i try to boot windows from USB or DVD ,it automaticly boots to ubuntu. I've tried any ...
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1answer
59 views

Booting into Ubuntu after Fresh Install of Ubuntu 14.04 LTS ( No Dual Boot ) on Acer Aspire ES1-512

I have run Boot Repair on my machine and then rebooted my machine with my Live USB out. From this point, I was first presented with a screen that said 1) "Shim UEFI Key Management" then was ...
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1answer
53 views

How to boot CD on Ubuntu for installation?

I currently have ubuntu installed on my machine, but I want to try out Linux Mint. The CD is ready, but I need to boot it and install it. How do I do this? Pressing ESC on boot-up does not work. Any ...
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1answer
77 views

Fresh Install of Ubuntu 14.04 LTS (No Dual Boot) - Getting No Bootable Device

Really hoping some one can assist as I'm concerned that I have done something wrong with my new installation of Ubuntu 14.04 LTS, with no dual boot on my Acer Aspire ES1-512-C32A. Basically, when I ...
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0answers
38 views

Can't dual boot: No OS was found

I'm trying to dual boot my laptop with Ubuntu 14.04 along with windows 8.1. I've created a bootable usb using both unetbootin and isotousb. When I boot from usb it says "An OS wasn't found. Try ...
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35 views

Facing one issue while starting ubuntu 14.04

Last week I have taken kernal updates now when I start ubuntu I am getting error as shown in the picture. Though force restart works. Upgrade to 14.04 does not solve issue. How to resolve it?
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1answer
90 views

UEFI bootable USB with Ubuntu 12.04.5 LTS (amd64). (this is not duplicated question:)

I downloaded official ubuntu 12.04.5 LTS (64bit) ISO file and using my desktop Ubuntu (latest 14.10) and Startup Disk Creator I created bootable USB installation media. It all worked fine installing ...
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0answers
12 views

iso image boot page reads

PXE -E53 No boot filename recieve. PXE-MOF Exiting Intel Boot Agent. No bootable devise -- insert boot disk and press any key. ( ubuntu debian install manual) describes DHCP to prompt command to the ...
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16 views

Booting Ubuntu without Ubuntu Installation DVD

I am unable to boot Ubuntu OS without using its installation DVD. I had already installed Ubuntu on D: Drive (Full Installation). When I don't insert the DVD, the screen shows "Completing ...
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2answers
125 views

How to dual boot Windows 8.1 and Ubuntu on the same hard drive?

After being away from Linux based machines for a long time, I've recently come into possession of an ASUS X551MA running an Intel Celeron N2830 @ 2.16 with 4 GB of RAM and a 500GM HD. I decided that I ...
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1answer
17 views

How to have the type of boot detected by the kernel and written to a file (perhaps in /proc)

This is probably not possible, but I want to know how to have the kernel detect what caused the motherboard to start and possibly store that in a file in the /proc folder. With "what caused the ...
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1answer
27 views

Issues with lost / damaged GRUB - cant rebuild. Need help

Im looking for some assistance, as somehow i managed to kill my GRUB settings, and now i boot into the rescue mode. My system is not the best layed out, as I have Win 8.1 on a UEFI loader, and when i ...
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0answers
92 views

How to disable Secure Boot in Asus Z97i Plus to dual boot Ubuntu / Windows 8.1?

In Windows 8.1, I created a bootable USB drive with Ubuntu 14.04 on it. I've installed ubuntu on a partition of the SSD drive. Win 8 is installed on a different partition of that SSD. Problem: the ...
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0answers
59 views

Can't install Ubuntu, no suitable graphics mode found

I have downloaded Ubuntu 14.04.2, put it onto a flashdrive, booted from the drive and I am greeted with: No suitable graphics mode found. Booting in blind mode. Needless to say, I can't install. ...
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1answer
68 views

Persistent Live usb vs Full install [duplicate]

I have looked at some of the other forum post and they don't answer my question. I have been using various Linux Live CDs for some time now, but I've just bought a 16Gb usb 3 stick for a Linux ...
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1answer
34 views

No permission to copy files (live CD)

I'm trying to dual boot Windows 8.1 and Ubuntu and a solution I have come accross requires me to do some copying and pasting to get grub to appear. (My problem is that grub never shows up). Here are ...
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0answers
71 views

Booting Ubuntu from USB

I have tried a persistent installation of Ubuntu 14.10 on my PNY 32GB USB2.0 to use as a portable OS to boot my PCs. Everything is alright. I can boot my two PCs with the flash drive, however, as ...
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3answers
155 views

PC does not boot into Windows, but Ubuntu still works well; how to recover?

I installed 7 operating systems in my PC. All worked very well. (Ubuntu 11, Ubuntu 14, EduBoss, Redhat6, Nodezero, Windows 8, Win 7). I frequently used Windows 8 and Ubuntu 14 last 6-7 months, I enjoy ...
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0answers
16 views

Ubuntu isn't working

After I installed the AMD Catalyst Center and rebooted my computer when it turns on it shows ubuntu and the 5 dots below it 1 will light up and then the other 4 light up at the same time and then the ...
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0answers
13 views

Last boot was in the future, can I fix it or do I need to wait it out?

I am trying to fix another problem... but, was in the BIOS setup and noticed that the clock was set to 22:36 when it was really 2:36. I thought, "This is something that even I can fix." Now, the ...
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0answers
55 views

Stuck at splash screen when changing to GDM

After considering it for a while, I finally decided to install GNOME onto my Ubuntu 14.04 system to give it a play and see if I it was worth switching to Ubuntu GNOME. Everything seems to be fine ...
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3answers
110 views

Grub never shows, always boots to Windows 8.1 - Sony Vaio

I hope this won't be marked as a duplicate as I've tried almost all answers to similar questions I could find on this site. My Sony Vaio runs Windows 8.1 and I wish to dual boot Ubuntu 14.10 on it. ...
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1answer
29 views

No boot loader option after install [duplicate]

Hello I was trying to install Ubuntu 14.04.2 LTS to dual boot with Windows 7. So far I manage to install the Ubuntu and upon reboot no boot loader option to select the OS I want to load. Here is my ...
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1answer
45 views

Delete all Ubuntu partitions and reinstall again

I have messes up ubuntu twice, and reinstalled it again after that. THis has created two ubuntu partions on my drive. Is it safe to remove all these partitions from windows, and then reinstall using a ...
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0answers
8 views

Hide Grub including text “Grub loading”

There are some tutorials for hiding GRUB Menu out there. But: When the computer is booting it still reads "Grub loading" then boots to OS. If I press the shift key while Grub loading the menu appears. ...
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1answer
74 views

Not able to boot after installing ubuntu 14.04 on a brand new dell precision tower 5810

I've just acquired recently a brand new Dell Precision Tower 5810 with preinstalled Win7 pro. It has 2 disks 4TB each. I tried to install Ubuntu 14.04 as the primary OS wiping everything from the ...
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2answers
72 views

Installed Ubuntu on partition. Can't Boot windows 7 anymore

I am running Windows 7 on my computer since I built it but a few days ago I was inspired to also try out Ubuntu. I managed to get Ubuntu installed a seperate partition and its running fine. The ...