For questions regarding the installation of two or more operating systems on a single computer.

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Struggling to boot back into windows after installing ubuntu 14.04

I have a question, and hold on, could be a long one. Previously, I have dual booted my computer with linux mint 17.1. I do not know how I bypassed Uefi, but I somehow disabled it. So, previously I ...
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19 views

Boot ubuntu but windows error appears

When I boot Ubuntu using the bootloader, it brings an error up to do with not being able to load Windows. Windows failed to start. A recent hardware or software change might be the cause. To fix ...
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51 views

Unique problem facing installing Ubuntu 14.04 alongside preinstalled windows 8.1 on laptop lenovo z7080

I have recently buy lenovo z7080 laptop which has windows 8.1 pre-installed. I updated all the drivers and started to dual boot alongside windows with ubuntu 14.04LTS using dvd. I did enable legacy ...
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142 views

Cannot install Ubuntu - stuck at 'Installation Type'

I am trying to install Ubuntu on my computer, but am stuck at choosing the device and partition to install to. I have three harddrives, one of them was going to be dedicated to Ubuntu, but two of the ...
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76 views

Full Disk Encryption on Mac PC with EFI dual boot

Recently I installed Ubuntu Server 14.04 LTS on my Mac Mini late 2011 using the instructions in the article "Ubuntu + Mac: Pure EFI Boot". Now, I want to do dual boot in my Macbook Pro where I already ...
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63 views

Can't generate grub.cfg

Software Up To Date installed a new kernel for me yesterday ( Ubuntu 12.04, kernel 3.13.0-48-generic) After rebooting I ran grub customizer and got an error. Same from update-grub: Generating ...
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64 views

Unable to install ubuntu alongside windows 8.1 with raid0: no partitions detected

I tried installing Ubuntu 14.04 alongside windows 8.1 on my machine using an Ununtu USB drive in UEFI mode, but no luck: My machine is Asus UX301, preinstalled with Windows 8, upgraded to 8.1. Got ...
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36 views

Full switch from windows to ubuntu?

Recently I partitioned my hard drive an allocated 60 GB of space to an Ubuntu dual-boot. However, I realized I've spent the majority of my time on Ubuntu and would like to replace windows with Ubuntu ...
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41 views

not able to boot any OS windows 7 or Ubuntu

My problem is that i can't boot to Ubuntu but i have Ubuntu installed. The problem is that by default is booting for Windows7 that is not working. And so i can't run any OS. My question is using ...
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47 views

GRUB2 booting raw hdd disk image via loopback

First of all, i tried to google, but only found how to's for booting iso files with grub via loopback. Im running linux mint 17.1 64, up to date. i have a complete dd image of a 128GB SSD with ...
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45 views

Strange boot issue (purple screen)

I'm somewhat of a noob when it comes to this kind of stuff, but I am a computer science student so I am familiar with operating systems. Anyway, I'll try to be as detailed as possible in describing ...
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141 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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75 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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85 views

Ubuntu grub not showing. Oprating System not found

I had a dual boot (Windows 7 and Ubuntu 14.10) sony vaio corei3 from 4 years till now. Usually I was working in windows and one week ago I had a fresh Ubuntu 14.10 installation. Last night I updated ...
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76 views

Windows 8.1 Dual Boot Ubuntu 14.04 - dmraid and fixpart

I'm trying to install Ubuntu 4.14 on dual boot with Windows 8.1, but when beginning the LiveUSB the Ubuntum, the partitions created by Windows 8.1 are not recognized, reports that all is HD as ...
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212 views

No “Install Alongside OS X” option when installing Ubuntu

Problem I have is that when I run through the install procedure I do not get the “Install Alongside OS X” option. I have an IMac 21.5” mid 2011 running OS X Yosemite 10.10.2 Version of Ubuntu I wish ...
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61 views

How to repair grub to work with multiple hard drives?

On my computer I have multiple hard drives. One of them has Ubuntu 14.10 and the other has Windows 8.1. I messed up my boot loader and know only Ubuntu appears in the grub list. Windows 8.1 is on the ...
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124 views

Cannot get grub to show up (directly boots to Windows 7 instead)

Every time I try to boot, my computer goes straight into Windows 7. I had Windows 7 installed and installed Ubuntu 14.04 afterwards, but grub does not show up on boot. Tried holding shift, messing ...
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84 views

Windows 8.1 OS not detected when installing Ubuntu 14.0.4

I am trying to install Ubuntu 14.0.4 alongside Windows 8.1, but I do not get that as an option when installing. Instead I get a message saying that there is no current OS detected. I have gone ...
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104 views

Ubuntu Boot error: NMI watchdog: enabled on all CPus

So, I cannot get Ubuntu to boot on my laptop: I insert my flash drive and change the boot priority and the normal screen of "try Ubuntu before installing" appears. That is what I select. 95% of the ...
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20 views

Unable to install Ubuntu or any other distro Alongside Windows

How do I proceeded with Ubuntu installation? Made my USB drive bootable with Rufus. Restart and booted from USB. I see the Ubuntu installation window, clicked next, selected both options Download ...
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103 views

Ubuntu wireless got disconnected when far from router

I finally did install Ubuntu 14.04 on my Asus notebook. Now, my laptop is on dual-boot Windows7 and Ubuntu. All is working well, however, after getting the updates sudo apt-get update and setting up ...
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140 views

Extended Partition (Partition 4) does not start on physical sector boundary for a dual boot system

I have recently installed both windows and linux (64 bits). Upon typing sudo fdisk -l I get the out put below. Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 ...
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133 views

grub menu does not show windows 8 option after installing kubuntu 14.04

I recently installed kubuntu 14.04 on my machine that had windows 8.1 pre-installed.However, after restarting the system the grub menu does not show windows 8 option. I've already tried updating the ...
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162 views

Setup FakeRaid Raid1 for data only for Ubuntu 14.10 and Windows 7

I want to create a FakeRaid RAID1 array of two hdd's that are being used only for data, no OS's on them. My OS's are Ubuntu 14.10 and Windows 7 which are each on seperate hdd's. Almost all of the ...
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26 views

Kubuntu cannot start, I'm thrown into busybox

What I did Changed the HD from my previous sony lap to a Lenovo P580, added the Windows drivers required and that worked, I did not check Kubuntu at this time but Grub2 was working. Several months ...
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93 views

Rebuild Windows RAID 0 for permanent use in Ubuntu 14.04

My old PC (Core i7 920, Asus P6T-SE, 6GB RAM) recently suffered a motherboard hardware fault. The 2TB RAID 0 array containing the Windows installation and mostly media library was no longer ...
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163 views

Dual boot W8.1 and Ubuntu 14.04 on SSD/HDD

I recently bought a new laptop which has an 8 GB ssd and a 1 TB HDD, pre-installed with W8.1. I'm used to creating a partition on a HDD to install Ubuntu on. However, with the new SSD I'm not sure as ...
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58 views

Ubuntu dual boot Yosemite issues

I'm running a dual boot (mac os/ubuntu-12.04) on my mac book pro. Yesterday I upgraded to Yosemite and the boot loader went to pot. I used rEFInd to reinstall using the following ...
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75 views

Lubuntu hangs on “Preparing to install Lubuntu”

To give some background details, my computer runs 64-bit, I'm installing Lubuntu alongside Windows 8.1. I can sucessfully boot into Lubuntu's CD, and I reach the requirements to install Lubuntu, and I ...
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65 views

Triple booting Chromium Os, Ubuntu 14.10, Windows 7

I have a lenovo L410, with windows 7 professional pre-installed. On this, I have dual booted Ubuntu 14.10. Now, I want to triple boot with chromium os, but as I have a lot of stuff, I dont want to ...
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73 views

Lost+found folder still present even after reformatting partition - how to remove?

I'm trying to reorganize the partitions on the 2 HDDs that I have on my system. One of the partitions (ext4) is 883 GiB (according to gparted) and apparently has 14 GiBs used. However, if I mount ...
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87 views

How do I fix a COM32 Error?

I have recently downloaded Ubuntu and it is a great operating system, don't get me wrong, but I want Windows 7. I saw that I can install it to a separate partition and I made the partition, but, ...
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368 views

After Dual-Boot, Starting Ubuntu Ends At Purple Screen

I recently dual-booted my laptop with Ubuntu 14.04 and Windows 7. However, every time I try to start Ubuntu from Grub, it ends at a purple screen and the fan kicks on high. This is also the case when ...
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69 views

grub doesn't work after dual booting win 8.1 and ubuntu 14.04 lts

Just installed win8.1 and Ubuntu 14.04 lts But the grub doesn't show at all When booting.... Also Nothing happens When I press during the booting process. It just loads the Ubuntu as default
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42 views

How can I upgrade Windows 7 to Windows 8 without affecting Ubuntu?

I have Windows 7 and Ubuntu 14.04 installed on my PC. I want to remove Windows 7 and install Windows 8, without removing Ubuntu. I know that a fresh install of Windows usually completely removes any ...
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173 views

Default Grub2 entry doesn't point lastest kernel version + “selinuxfs mount failed” boot error: how to repair?

I installed Ubuntu 14.04 in multi-boot with linux (Mandriva 2011/Grub Legacy). First it seemed to work. But on my first update in Ubuntu, I was "strongly adviced" by the system to update grub and got ...
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390 views

Boot Ubuntu, Windows 8.1, and Windows 10 Technical Preview with Grub

I originally installed Windows 8.1 and Ubuntu, using grub to give me a selection of operating systems to boot to when it starts up, and that works fine. I decided I wanted to try the Windows 10 ...
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40 views

Mount a NTFS drive with Junction point

My desktop has 3 physical hard drives and I dual boot between Win7 and Kubuntu 14.04. I have a 250G drive with Windows on it, a 200GB drive for Linux and a 1TB drive for data. When I set the ...
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78 views

grub2: system restart after menu (nvidia, crypt)

I got a ThinkPad T410i and I installed Ubuntu 14.04.1. Grub is showing up but if I select any Ubuntu boot option the system does a reboot. My first search brought up to add nomodeset because of the ...
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149 views

Converting logical partition to primary partition

I am booting windows on ubuntu 14.04 but during the time of installing it is just showing logical partition who can I convert logical partition into primary partition to install windows alongside with ...
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86 views

Managed to install Ubuntu alongside Windows7 with Gparted; now can't get back into Windows

I hoped to make a dual-boot install of Ubuntu (from USB w/ Ubuntu 14.10-desktop-amd64.iso) next to Windows 7, but dual-boot option was not presented. I chose "something else", shrunk Windows, created ...
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87 views

Update GRUB with encrypted LVM on second volume/drive?

On one machine I have an encrypted LUKS container around an LVM on /dev/sda that I can boot into. On the same machine is a second drive with an encrypted LUKS container around an LVM on /dev/sdb (that ...
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331 views

Graphical Bootloaders?

I am currently using Ubuntu LTS 14.04 and I am curious about various graphical bootloaders. I have heard of them, such as BURG, GAG, Chameleon, Chimera, etc. However, they (GAG and BURG because I ...
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27 views

How to move home partition to different start point?

I have tried moving/resizing partitions before and have ended up on many occasions breaking the installation (somehow). I do android ROM building, so I need to resize my home partition, but my layout ...
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86 views

Ubuntu Installer does not recognize existing partitions

History of my laptop: Acer E1-572 with Windows 8.1 preinstalled. I then dual booted with ubuntu without any problems. Then I came across a booting problem which I resolved by reinstalling ubuntu over ...
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64 views

Two copies of Ubuntu loader detected by Boot Manager

I have Windows 8 and Ubuntu on my system. I recently upgraded from Ubuntu 13.04 to 14.04, and ran Boot Repair in order to make the GRUB the default loader. However, it failed to achieve what I wanted, ...
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93 views

Battery not detected, /proc/acpibattery empty even it is present

I'm using Ubuntu 14.04 and it is fully up-to-date. But the battery of my laptop is never detected. There is no battery icon on the top bar, the /proc/acpi/battery is empty. I've tried to remove the ...
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263 views

Triple Booting Mac, Windows, Ubuntu on Mac with Windows Already installed with bootcamp

So on my macbook I have OS X 10.10 Yosemite, Windows 7 Professional, and I want to install Ubuntu from a USB stick. I already have a bootable USB drive, and already installed refind. The problem is ...
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90 views

make bootable hard disk to install multiple OS

I am using Ubuntu 14.04 LTS and I have two partitions in my hard drive. So I want to install Windows in one of my partitions and keep Ubuntu on the other. To do so, I want to use my external hard ...