Questions about the Unified Extensible Firmware Interface that finally replaced the BIOS on newer desktops and laptops with the release of Windows 8. UEFI is independent from CPU architectures and supports booting via UEFI with and without secure boot enabled as well as legacy booting via CSM.

learn more… | top users | synonyms (1)

0
votes
0answers
10 views

Standalone Grub2 EFI installation - grub.cfg placement?

I'm trying to use Grub2 as the boot manager on an EFI system in standalone mode. (The only persistent harddisk has OS X on it; Linux and Windows drives may or may not be present at times, hence the ...
3
votes
2answers
7k views

Can't boot from liveUSB when trying to install it alongside Windows 7

I'm very noob at Linux and installing techniques. I want to install 12.04 from bootable usb flash alongside Windows 7 (also tried live CD but not working) but computer is not booting from USB flash or ...
0
votes
0answers
37 views

Problem with dual boot configuration. UEFI vs Legacy?

In my friends laptop previous operating system is Windows8 with UEFI boot mode. I change it UEFI to Legacy mode for Linux installation. But after Linux installation one problem occur. Windows8 boot ...
0
votes
0answers
15 views

Install Ubuntu 14.04 on small SSD and HDD?

I have an Asus Ultrabook S46C with Windows pre-installed, it has a small 24 GB SSD and a 750 GB HDD and UEFI system. Windows leave about 16 GB free on SSD. I have successfully installed Ubuntu ...
0
votes
0answers
10 views

ubuntu boot to initramfs/busybox

I have an Alienware 17 R2. I installed it with 2 SSD and 1 HDD. I have windows 8.1 and install ubuntu 14.04. The disk list is: Disk 0: HDD Vol 1: Data Disk 1: SSD Vol 2: Ubuntu Disk ...
0
votes
1answer
24 views

Installing Ubuntu 14.04 on Dell Optiplex 9020

After disable safe boot options on BIOS, change UEFI to Legacy option I could boot Ubuntu from USB, it is not installed on computer. But it skips part of the left side of the screen and does not show ...
0
votes
1answer
53 views

Grub menu not showing after installing ubuntu 15.04 in dual boot with windows

I have a lenovo g50-80 windows 8.1 is preinstalled in uefi mode. I changed the mode to legacy mode then installed ubuntu 15.04. but even after installing it boot menu was not coming. Then I changed ...
1
vote
3answers
2k views

How to, finally, get Ubuntu to boot on a mac from external USB storage?

I wish to run Ubuntu on my iMac from external USB storage, either an external disk or a flash drive. I can easily create a bootable USB stick and use that to install Ubuntu 14.04 onto a properly ...
1
vote
1answer
34 views

What should I do as apt-get wants to remove grub-efi-amd64-signed

I'm on 15.04 and latest upgrade shows grub-efi-amd64-signed as "to be removed" (along with upgrading grub-common, grub-efi-amd64, grub-efi-amd64-bin and grub2-common) I'm using EFI secure boot, so I ...
3
votes
2answers
312 views

Ubuntu installation VS UEFI on Dell XPS 13 9343

I have heard that there are problems with Ubuntu on the Dell XPS 13 9343, however - I cannot even make the boot menu pop-up when booting from an installation pendrive (lastest Ubuntu, lastest ...
0
votes
1answer
31 views

Bottom of Screen of 4k Display is Black

I just bought an Acer Aspire VN7-591G-70CY (4k display version) and installed Ubuntu after disabling UEFI and using this (nomodeset). It didn't work with UEFI enabled. In the live session and with ...
1
vote
2answers
30 views

Messed up grub boot order

While I was messing around with my boot order I moved efi firmware to the top and restarted my machine. Now I am stuck in a loop of uefi and boot orders trying to get back to my desktop. How do I fix ...
0
votes
0answers
19 views

How to add windows 8 to Grub 2 [duplicate]

Ok, my computer has windows 8 preinstalled, i wanted to have dual-boot so i tried to add ubuntu in the easyBCD, now i cant boot to windows and in grub2 only ubuntu appears. I ran the boot repair and ...
0
votes
0answers
24 views

Can't boot into Windows 8.1 after installing Ubuntu (Elementary Freya) [closed]

I wanted to try out Linux so I installed Elementary OS Freya (which is apparently an Ubuntu fork) following these instructions, but I lost the ability to boot into Windows now as it doesn't show up in ...
2
votes
2answers
5k views

GPT partition table problem: Windows 7 and Ubuntu dual boot

I hope you guys will help me get through this situation I have gotten myself into. I bought a new samsung ultra book running windows 8. I knew going into the purchase that I wanted to ditch windows ...
2
votes
3answers
4k views

Black screen when trying to install ubuntu 13.10

I am in need of some help. It has been 2 weeks since I bought my first ever windows laptop with the aim of replacing windows but I have been unsuccessful. The hardware is as follows : Asus 15' F550D ...
0
votes
1answer
23 views

I'm not able to boot to Windows after installing Ubuntu 14.10

I have Lenovo G50 laptop and I installed ubuntu to my system in different drive. When the grub comes and clicks on "Windows" I get an error message which tells that "The current hardware and software ...
0
votes
1answer
52 views

How to install ubuntu alongside installed windows 8.1? [duplicate]

I am trying to dual boot windows 8.1 and ubuntu, but i don't know exactly how to do it, since i tried it once and it went really wrong. Now, as i said, i have windows 8.1 installed, and in system ...
0
votes
0answers
18 views

Dual boot with Linux Mint and Windows 8.1 [closed]

I bought a Toshiba Satellite specifically to dual boot Linux Mint (v. 14.x). Not thrilled with Win 8 but will keep it for now. I read article in Ubuntu forum about dual book with Win 8. It said that ...
0
votes
1answer
36 views

GRUB2 issue after removing windows and reinstalling ubuntu

Short version Cannot restore EFI partition with boot repair. Create a proper partition AND put a /EFI/ folder into it, then used boot repair Original question I originally had a dual boot with win 8 ...
0
votes
0answers
23 views

Ubuntu UEFI boot option disappeared [closed]

Two months ago, I installed 2 OS's on my laptop, Ubuntu 14.04 and Windows 8.1. (Both UEFI Boot) I installed Ubuntu first and then Windows. Everything works fine. I press F12 and the boot options ...
0
votes
1answer
24 views

Grub 2 doesnot show any OS.

I am using Dell Inspiron 15 3000 series that originally came with ubuntu. I changed it to windows completely according to my needs. Today I tried dual booting with Elementary OS Luna. I installed it ...
0
votes
1answer
44 views

Installing Ubuntu 14.04/14.10 on a UEFI laptop in UEFI mode?

My laptop: i7 with built-in Intel HD 4400, 8GB ram, Nvidia GeForce 840M, Broadcom WiFi, Windows 8.1 64 bit. I had tried to get Linux to work but ran into a lot of issues such as screen tearing and ...
0
votes
1answer
104 views

Dual boot Windows 8.1 and Ubuntu on SD card EFI (Chuwi VI10)

I have bought a Chuwi VI10, very cheap chinese computer dual booting Windows 8.1 and Android. It runs InsydeH2O BIOS. I got rid of the Android stuff and decided I wanted to install Ubuntu on the ...
1
vote
1answer
5k views

How to upgrade from rEFIt to rEFInd

I have recently installed Ubuntu Server (12.04.3) on a MacMini1.1... The MacMini already had OSX (Leopard) on it and I wanted to keep it, so after much research, I used the gpart and fdisk within an ...
0
votes
1answer
24 views

A new SSD with copied partitions and UEFI dual bootable

I got DELL Inspiron 5521 notebook with 1Tb spinning drive /dev/sda which holds several partitions, Win7 among them on /dev/sda5 and Ubuntu root partition on /dev/sda7. It is dual EFI bootable. Today ...
0
votes
1answer
494 views

Multiboot Win 7, Ubuntu + Linux on UEFI system

I am quite happy and content today. Yesterday I was able to install Ubuntu 12.10 on my VAIO-S Windows 7 machine from 2012 with UEFI and secure-boot. I've failed several times, but using the ...
0
votes
1answer
197 views

Ubuntu 15.04 doesn't boot on Dell XPS 13 2015

I wanted to upgrade from Ubuntu 14.04 LTS to the new Ubuntu 15.04 on my Dell XPS 14 2015 Developer Edition, because most issues seemed to be fixed in the live version. Therefore I wiped the hole disk ...
2
votes
3answers
5k views

Windows 8 UEFI does not boot [duplicate]

I've just bought a new Toshiba laptop, on which Windows 8 is preinstalled. I've installed Ubuntu Gnome 13.10 and GRUB2 correctly detects Ubuntu and Windows. But the strange problem is that when I try ...
-1
votes
1answer
32 views

grub missing after laptop maintenance [closed]

I cleaned my laptop fan today, having to remove my hard disk. Now, grub is missing : my laptop boots on windows automatically. I had a debian testing - windows dualboot. Boot Mode : [UEFI] Secure ...
0
votes
1answer
56 views

How to install 15.04 in not UEFI mode

I've got Windows 8.1 installed in not UEFI mode. I'm trying to install Ubuntu 15.04, the problem is that my usb stick wouldn't boot. The only way I got it to boot my USB stick was turning my BIOS to ...
0
votes
0answers
16 views

fresh install 14.04, screen and wifi not working on reboot

I am having strange problems with ubuntu LTS, fresh install everything goes ok, no errors to be seen, works ok accept when i try to do a software shutdown or restart when it gets past the grub ...
0
votes
0answers
22 views

boot repair gets aborted

Installed Boot-Repair and ran (Recommended Repair); it gets aborted showing me this message: "Please use this software in a live-session (live-CD or live-USB). This will enable this feature"... which ...
0
votes
1answer
32 views

UEFI Dual Boot partitioning with 14.04 and Win 8.1 on SSD + HDD

I'm setting up a new machine with a SSD and a HDD. Windows is for gaming and Ubuntu for working. I'll install 8.1 first and leave 10GB on the SSD for /. On the HDD I'll leave 120GB for /home and the ...
0
votes
3answers
584 views

Ubuntu UEFI Boot problem on SSD [closed]

I recently tried to replace Windows with Ubuntu 14.04 on an SSD. Somehow after installation I could not boot into the system. It said: ERROR 1962 - NO OPERATING SYSTEM FOUND - PLEASE PRESS ANY KEY TO ...
1
vote
4answers
5k views

Ubuntu LiveUSB doesn't recognize my Windows 8 installation

I have a laptop with UEFI (secure boot disabled) with Windows 8. I am trying to install Ubuntu 12.10 or 12.04 along side Windows 8 on my primary hard drive, which uses GPT. I am only presented with ...
0
votes
3answers
4k views

Can't access BIOS and installing a windows hard drive

Built new computer: AMD FX-8320 Eight-Core Processor × 8 9.7 GiB RAM Graphics GeForce GTX 650 Ti BOOST/PCIe/SSE2 Ubuntu 13.10 64-bit Desktop Computer 1 TB HardDrive BIOS Type, UEFI BIOS ...
0
votes
0answers
27 views

Window Bios lost After setting environmental variable [closed]

I have installed Ubuntu 14.04 in my laptop After setting the environmental variable , i have been lost the bios booting in my laptop , i am using the Lenovo G500 preinstalled windows 8.1 , i have ...
1
vote
1answer
59 views

Cant install ubuntu 12.04, 14.04 64bit on my lenovo s205

I've read a lot of similar topics, but nothing helped. Check out my little sad story: I made bootable USB with UNetbootin. I tried Ubuntu 12.04 and 14.04, linuxmint 17.1, fedora kde, zorin. Before i ...
0
votes
0answers
27 views

Ubuntu 14.04 won't boot after running windows drive on PC EFI / LVM question?

I have an Acer desktop box that came with a windows 7 on the hard drive. I added a 1TB hard drive (with the windows 7 original drive disconnected) and installed Ubuntu 14.04 using the LVM option. As ...
0
votes
0answers
18 views

Trouble booting after each kernel update

For some days now I have trouble booting after updating the kernel. I'm using UEFI without secure boot. Until 3.19.0-18 it all worked fine. When upgrading to 3.19.0.20 the system did not boot with ...
1
vote
0answers
133 views

Ubuntu 15.04 dual boot error with Windows 8.1 with UEFI and SecureBoot

Greeting's, I've tried to install windows 8.1 + ubuntu 15.04 thrice now. But both the time's i'm left with a peculiar problem. I have UEFI and Secureboot enabled. In the UEFI there is no option to ...
1
vote
2answers
11k views

“This computer currently has no detected operating systems.”- Ubuntu 14.04 install Windows 8.1

I tried to install Ubuntu alongside windows 8.1. I disabled secure boot and made sure UEFI was enabled and moved the DVD above Windows Boot manager in the boot order. But the Ubuntu installation still ...
0
votes
0answers
33 views

Can't repair Windows 8 boot after installing Ubuntu

I’m new to Ubuntu. I installed it because I couldn’t fix the Wi-Fi limited connection problem of Windows 8.1, so I installed Ubuntu alongside Windows and the installation went OK. I can now use Ubuntu ...
1
vote
1answer
93 views

Shutdown, restart and suspend problems on Acer E5 511 (Sandy Bridge) 14.04 and 15.04

Lot's of similar problems out there. Basically I have tried most or all of the suggestions offed but to no avail. Specifically. I installed Unity 15.04 on two Acer E5 511 C1WE laptops and it seems to ...
1
vote
1answer
80 views

Boot-repair: Can't boot ubuntu in uefi mode

I am aware that there are many similar questions in this site, but none of the seems to solve my problem. I've been trying to install ubuntu 14.04 alongside a preinstalled Windows 8.1 in a toshiba ...
5
votes
2answers
4k views

How can I install Ubuntu 13.10 on a Samsung ATIV Book 9 Lite? (screen turns off)

I already tried to with install Ubuntu 13.10 on my Samsung ATIV Book 9 Lite with the UEFI and CMS OS option in the BIOS, but I still have the same problem. I'm trying to install Ubuntu 13.10 from a ...
1
vote
2answers
397 views

Installing EFI to Raid 1 using partman and seed file, on both drives

So my question is, Is it possible to install the EFI partition onto both drives when doing a seed install on Ubuntu? That way if one drive goes, the relevant efi partition/data is there on the second ...
0
votes
0answers
21 views

Dual Boot Slows Boot Time

Boot into Ubuntu has become very slow. Boot speed was acceptable when triple booting into Ubuntu 15.04 (sda), Windows 7 (sdb) and Emmabuntu (sdc). Booting to Ubuntu became very very slow after ...
2
votes
1answer
5k views

How do I EFI boot Zenbook Prime UX31A from built-in card reader?

How do I EFI boot Zenbook Prime UX31A from built-in card reader? Ubuntu Live 12.10 64bit has been copied onto an a SD card which I'm trying to boot from. When I power on my Zenbook and press ESC for ...