An operating system from the Windows NT family of operating systems from Microsoft, released in 2012 and the successor of Windows 7. Introduced UEFI as a replacement for legacy firmware/BIOS and required computer manufacturers to enable the "secure boot" feature.

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Problems with boot “Windows Boot Manager boot failed”

I have a dual boot of Ubuntu 14.04 and Windows 8.1, and I am having problems with booting into Windows and Ubuntu. First what happened was that I was unable to load into ubuntu. It would say ...
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2answers
134 views

Can't boot to windows 8 after Ubuntu 14.04.2 install

I tried boot-repair and followed the steps it asked me and showed everything as ok on completion of the program. I restarted the system and it automatically booted Ubuntu without showing any option ...
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0answers
52 views

Grub not showing up /

I had my grub dual booting (Ubuntu 14.04, Windows 8.1) working for more than one year, then suddenly yesterday grub disappeared with windows 8.1 starting automatically without any sign of grub. ...
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2answers
283 views

Install Ubuntu 15.04 alongside Windows 8.1 in UEFI mode

It seems like a repetitive question, but its is not. If it is, please guide me. I have bought a new PC with following configuration Motherboard - Gigabyte (Socket 1150, Intel H81, GA-H81M-S1) ...
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1answer
251 views

Dual boot with windows 8.1 “write the changes to disks?” problem [duplicate]

I have a pop-up message while installing Ubuntu alongside Windows: Is it normal? If i continue is it format my entire hard disk? What should i do?
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1answer
25 views

Is there a really easy way to make a live USB in win 8?

So far I have always used linux distros to create USB live installers, but now the only thing I have is win8. I have tried that Universal-USB-Installer-1.9.6.1 and it doesnt get me anywhere. Is there ...
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0answers
21 views

Ubuntu 14.04 Oracle virtual box windows 8 fail to locate files

I have downloaded windows 8 ISO file from their offical website: Widnows 8 download Then i have set the following settings on my new virtual drive: As you can see ive added it to the disk: ...
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0answers
129 views

Ubuntu 14.04, Windows 10 dual boot problem GRUB

I have just upgraded my laptop to Windows 10 from Windows 8.1. However, every single time I select windows 10 from the grub menu, the windows 8 loading screen comes on first then it changes and boots ...
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0answers
134 views

Cannot boot ubuntu 15.04 using sony VAIO with win 8.1 pre installed

I am new to Linux and I am recent trying to install 64-bit ubuntu 15.04 into my sony VAIO S series laptop (SVS13125CGP)with windows 8.1 pre-installed to make it a dual-boot laptop. I have tried the ...
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1answer
36 views

How to revert a dual boot (windows 8 & Ubuntu 15.04) [duplicate]

I want to reinstall ubuntu but with LTS so I can delete windows 8 and allocate my hard drive data to ubuntu
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0answers
29 views

how can I Revert ubuntu dual boot with windows 8 and retrive lost documents

I wanted to dual boot Windows 8 with Ubuntu and I mistakenly chose the wrong partition. I have lost my files and everything on my computer including the Windows installation. Is it possible to revert ...
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3answers
58 views

How to install Windows(8.1/10) when Ubuntu 14.04 is installed?

I want to install windows operating system on my laptop (originally came with windows, but deleted it because Ubuntu is better for me, but now I have to use Windows, because of my studies). Few days ...
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1answer
235 views

Ubuntu 14.0.4 LTS Crashes and freezes many times just after installation

Hello everyone and thanks for opening this thread; My computer works fine when I boot windows 8.1, but booting Ubuntu, I will surely face a system crash ( or freez), some times it takes one or two ...
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0answers
69 views

Having trouble dual-booting Linux (Ubuntu 14.04) with Windows 8.1

I would like to dual boot Ubuntu 14.04 for a software development environment, but I would also like to keep Windows 8.1 and my programs / media on a partition because I enjoy playing some ...
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0answers
92 views

Accessing Windows Shared file from ubuntu

I was wondering how to access windows shared file from ubuntu...I'm new in Ubuntu so excuse me if it's a silly question
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1answer
40 views

Dual-booting Windows 8 and Ubuntu with UEFI on two separate drives?

I've already installed Windows 8 in UEFI mode and it is currently running off of one SSD. On another SSD, I want to install Ubuntu GNOME. Is there any sort of special configuration or setting I have ...
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1answer
335 views

I deleted my ubuntu partition (win8 dual boot) without first resetting my uefi boot settings. How can I recover my laptop from grub2.02?

When I turn on my computer, I see the grub2.02 command line. It says "GNU GRUB version 2.02~beta2-15 Minimal BASH-like editing is supported. For the first word, TAB lists possible command ...
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1answer
41 views

windows does not boot after successfully dual boot with ubuntu 14.04

So, I've successfully dual-booted my Windows 8 machine with Ubuntu 14.o4. However, I still don't have a convenient method of choosing what OS to load at boot time. Ubuntu directly boot.
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4answers
672 views

Windows 10 upgrade attempt destroyed both my Ubuntu and itself (windows 8.1). How do I wipe/format my hard drive to start fresh and try again?

I had been dual-booting with Ubuntu and windows 8.1 for a while now without issue. However, when attempting my free upgrade to windows 10, it killed both. I am not entirely sure why, but it looks like ...
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0answers
390 views

VirtualBox - Trying to boot a VM from .iso - Fatal: no bootable medium found!

I am trying to install Windows 8.1 64bit in a VM. I have an .iso and I am trying to boot from the .iso. But I get the following error: Fatal: no bootable medium found! I have downloaded the .iso ...
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0answers
12 views

Deleting Windows from triple boot

I first had windows 7 in my laptop. Then I installed windows 8.1 in different partition (dual booted). Then I installed Ubuntu in different partition. Now it shows me grub showing option to boot ...
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1answer
216 views

How can I upgrade to Windows 10 and still dual boot?

I currently have Windows 8.1 and Ubuntu 14.04. I want to upgrade windows from 8 to 10. But I am afraid that it will break the Ubuntu dual-boot configuration. Please guide me how to upgrade to ...
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0answers
19 views

Boot Windows 8.1 after dual booting with ubuntu but only can acces Windows recovery

I just made a mess with UEFI and Legacy. I can't use Boot repair because I'm in Legacy mode, and I can't use Windows backup because it's impossible to enter, it just let me enter in recovery mode and ...
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2answers
226 views

Dual-boot Ubuntu 14.04 - Win8.1 (Can't boot Windows when UEFI mode is turned on)

I'm trying to install Ubuntu as a second OS, but I'm stuck at the turn off secure boot step. I've found out that to disable secure boot I need to switch from Legacy mode to UEFI mode. But I can't ...
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1answer
375 views

Changing Default Grub Menu, Not Default OS

My question is in regards to changing my default GRUB bootoader. Not the boot order, font, image, etc. I have successfully triple booted both of my laptops. Their default OS's were both Windows 8.1, ...
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1answer
236 views

The System Running In Low Graphics Mode’ Error. Guides will help

Hello Ask Ubuntu community. I've been trying to setup / load Ubuntu for a while now, but It won't let me set it up. I get the error "The system is running in low graphics mode" and I have a NVIDIA ...
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3answers
243 views

What will happen with ubuntu if I reset Windows 8 to factory default?

I have a dual boot system with Ubuntu 14.04 and Windows 8 on my hp laptop. I have been using this for over a year, but recently, there was some accident after which my Windows 8 is not booting. I ...
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0answers
43 views

install ubuntu alongside with windows 8.1: cannot boot into os selection screen without external

I was following instructions from this link(not exactly but roughly those steps). In the end I still cannot boot into the (grub) os selection screen. However, if I plug my installer thumb drive in, I ...
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1answer
159 views

Dual booting windows 8.1 and ubuntu, windows automatically loads

So I recently attempted dual booting Ubuntu with Windows 8.1 on a HP Pavilion G6. So far I've gotten everything working except whenever I turn on or restart my computer, it loads straight into ...
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0answers
14 views

dual boot win8.1 and ubuntu - Unused space problem

I justed to install Ubuntu on a pre-installed windows 8.1 Lenovo. So I shrunk about 40 GB from one of my drives. But when I wanted to use that space to install Ubuntu in that, I saw that this space is ...
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1answer
1k views

how to dual boot ubuntu 15.04 with windows 8 [duplicate]

My laptop model is DELL INSPIRON 15z(has 2 hard drives. One is 500GB HDD and the other is 32GB mSATA used for caching purpose and fast booting using IRST). I want to dual boot ubuntu alongside windows ...
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2answers
264 views

Dual Boot Windows UEFI problems

So I once had a nice setup going with dual boot linux and windows 8.1 in UEFI bootloader mode, but then I had to screw it up and try playing around. I've currently got windows 8.1 installed, with no ...
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0answers
50 views

Ubuntu 15.04 and Windows 8.1 dual-boot instructions [duplicate]

Hello fellow linux users, I am considering installing Ubuntu 15.04 on my Sony Vaio that came pre-installed with windows 8.1. I have looked at two guides for this. One made by Ubuntu, and the other ...
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1answer
54 views

Windows Manager always overrides Ubuntu

So I Installed Windows 8.1 first and then Ubuntu 15.04 on my laptop. Things were dandy until yesterday when I tried to boot ubuntu and it automatically went to windows. Tried to go through the bios ...
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0answers
23 views

before instaling Ubuntu [duplicate]

What should I do before installing Ubuntu to make sure that it won't have problem with my windows 8.1 How can I make sure that my files on windows won't be deleted?
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1answer
163 views

How can I boot Ubuntu trial from USB drive on Windows 8.1 PC with SSD?

I've recently installed Ubuntu 14.04.2 LTS onto a USB drive using the Universal USB Installer. Everything up until this point was fine. I then restarted the computer, and tried to access the boot ...
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1answer
152 views

Boot-Repair made Dual Boot System unusable

After an Update to Ubuntu 14.04, the system no longer started and showed the grub rescue prompt. I was able to start from CD by pressing F10 at the beginning to select the boot medium. Then I was able ...
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3answers
212 views

GRUB is not letting me switch to Windows 8. Dual boot process. Ubuntu 15.04

So today I just tried to do a Dual Boot with my Windows 8 desktop computer. I followed these instructions At the start, I made a 200Gb partition from my 1TB hard drive. I booted Ubuntu 15.04 by ...
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1answer
213 views

Dual boot not working (unable to load Windows) on ubuntu

I am new to linux(ubuntu) and have installed it while following different blog posts and stuff to keep my Windows installed and I hope it is. I selected Something else option while installing but now ...
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0answers
146 views

New to Linux, tried booting from a usb. wubildr.mbr is either missing or corrupted. (Windows 8)

I'm currently running Windows 8. I used this installation guide to install everything. After using the "Help Me Boot from CD" option in Wubi, I was able to restart and get to a page saying that ...
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1answer
87 views

ubuntu no longer starting in secure mode

I had a working dual boot system, Kubuntu 15.04 and Windows 8.1 - after an update 3-4 weeks ago, Ubuntu wont boot when secure mode is enabled. I get an error message "Invalid Signature Detected. Check ...
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1answer
13 views

Ubuntu boot with Windows 8.1, can't get Windows back

I installed Ubuntu earlier today, and can not find a way to go back to Windows. I have put the USB drive with Ubuntu on it, no option from GRUB, and I can't find it in Ubuntu either. I don't have an ...
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2answers
6k views

windows 10 and ubuntu dual boot [closed]

will we face same problem in installing ubuntu alongside windows 10 as we faced while installing ubuntu alongside windows 8? Did microsoft fixed it?
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1answer
447 views

On which device do I install the bootloader when I want to dual boot?

I'm currently trying to install Kubuntu 15.04 alongside Windows 8.1 (already installed). It's on a non-UEFI machine. My partitions are as follows: sda1 windows installation (500GB SSD) sdb1 HDD ...
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2answers
65 views

boot-repair windows not listed

today I installed Windows 8.1 and it broke my grub. I tried to run the boot-repair GUI on a live session of Ubuntu but after the restart of the PC the grub displays ONLY Ubuntu. Before the ...
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1answer
410 views

Unable to access BIOS menu after installing Windows 8

After installing Windows 8 in UEFI mode I can no longer access the BIOS menu. I have tried different solutions to access the BIOS menu but I was unsuccessful. I want to switch to Ubuntu but the live ...
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0answers
13 views

Installing a second OS next to Ubuntu

At the moment, my notebook us running on Ubuntu 14.04. I want to install a second operating system (windows 8.1) but I can't seem to install it via UEFI. Either the medium is to small(USB stick), ...
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6answers
549 views

How do I install Ubuntu with windows 8.1 on Toshiba? (now upgraded to win10)

I've upgraded my OS to Windows 10 but my problem still persists I am trying to get Ubuntu 14.04.2 and windows 8.1 dual boot setup. I've read numerous articles on how to do this, but can't figure out ...
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0answers
104 views

Problems uninstalling Ubuntu (Bios keeps showing it?)

I'm trying new distributions, and I want to clean all my Ubuntu installation. I have a dual boot W 8.1 - Ubuntu. This is what I've done so far: 1 - I changed my boot priority from BIOS. 2 - I ...
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1answer
122 views

Ubuntu 14.04 : “serious errors were found while checking the disk for / ” and after that Linux hangs very often

I have been using dual boot alongside Windows 8.1 from 1 year. Very recently the windows shut down unexpectedly, and then started showing "Trying to repair Windows". I knew it would harm Ubuntu file ...