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.

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how to install ubuntu on toshiba satellite c850-19z

My computer is using UEFI and is running windows 8. I've tried install ubuntu before but I only got as far as putting it on a USB (using universal USB installer)but when I go to the boot manager on ...
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6 views

Cannot install 14.04, cannot boot, no correct live environment

I cannot install Ubuntu 14.04.2 on my Acer aspire es1-531. I ran BootRepair and it gave me this paste. I added the nomodeset param to the grub2 to let the live or the installer run properly. I noticed ...
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1answer
16 views

Wanting to replace pre-installed Windows 8.1 on my Lenovo laptop with Ubuntu. Needed help on which partitions to remove and which to keep

I have the following partitions right now on my laptop: 1000 MB (Healthy OEM Partition) 260 MB (Healthy EFI System Partition) 1000 MB (Healthy OEM Partition) 462.14 GB (Healthy Boot, Primary ...
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2answers
15 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
28 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
8 views

How do I fix Ubuntu 14.04 LTS to work properly with UEFI BIOS Power Management (PME)?

Good morning. I have an ASUS motherboard: F2A55-M v1.02 and it is running the most recent BIOS from the manufacturer: 6603. I use the computer as a media server and want to be able to remotely wake ...
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0answers
3 views

grub2: error: /vmlinuz-3.16-ucs109-amd64.efi.signed has invalid signature [migrated]

I am using a derivative of Debian, called Univention Corporate Server. It's a nice appliance that I use for my home server. Yesterday I upgraded to the newest version and since then my server does not ...
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1answer
18 views

Ubuntu 15.04 Kernel panic - Samsung Series 9

Samsung Series 9 Laptop crashes in ubuntu 13.04-15.10 and other Linux (debian, arch, freebsd). Check: cleaned laptop, change the battery, change CPU cooler, memtest, temp. kernel 3.11 - crashes ...
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0answers
31 views

Unable to Dual Boot Ubuntu 14.04 with Windows 7 on UEFI

I have an Acer pc and it is running Win7. Because I'm having problems with that OS I wanted to do what the title suggests. And everything works great after the install. But everytime I try to restart ...
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1answer
15 views

Grub 2 menu isn't showing up after installing Ubuntu 15.04, Windows 8.1 is preinstalled

I did boot-repair, ordered boot order through efibootmgr even did grub repair from live cd. but nothing happened yet. suggest solutions
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2answers
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Cannot boot directly from Grub2 on dual boot Windows 8.1 with Xubuntu 14.04.2

I had Windows 8.1 Professional and Xubuntu in VM, but now I want dual boot. First two partitions I had them before with Windows 8.1 ((1) EFI and (2) msftres) then (3) partition C: and (4) parition ...
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0answers
23 views

Custom Ubuntu 15.04 Installer - Fails grub install on UEFI systems

I used the ubuntu 15.04 64 bit ISO and customized it using UCK. I installed a bunch of packages into the custom installer & generated the ISO. It installs perfectly in Legacy mode (non UEFI) In ...
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0answers
14 views

Cant get 15.04 or 14.10 or any version of Ubuntu to boot on Flex 10

I've seen a few questions around bit no one has really been able to hope. Ive been trying to get 64bit Linux working on this laptop through its 32bit EFI every nown and again for about a year now and ...
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0answers
43 views

how can I regain bootability of ubuntu after ubuntu 14.04 install alongside Win8.1

I am familiar with win but new to linux. The pc is a Dell Inspiron 660. The bios is AMI, build date 7/26/12, with the Aptio Setup Utility. I installed ubuntu alongside win8.1 via usb created with ...
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0answers
18 views

failed to open \EFI\Boot\grubx64.efi

I installed ubuntu 15.04 next to windows 8.1, both in UEFI mode and after that windows always booted first, so i used boot-repair to fix the grub and now i get this when the computer starts: Booting ...
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2answers
33 views

Install Ubuntu Linux Desktop 15.x on Pre-installed Windows 8.1 laptop and have dual boot [duplicate]

I looked at various questions all over the internet. Infact i did the same almost 6 months back on my HP Desktop but i did so much hit and trial that i have forgotten what to do this time? Do i need ...
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0answers
17 views

After Installation in Dual Boot (UEFI), SSD Partitions Management

I installed ubuntu in dual-boot in a laptop with pre-installed Windows 8.1 (uefi) with 500gb HDD and 32gb SSD. During and after installation everything went Ok, but as recommended, I leaved the SSD ...
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0answers
19 views

How to change the boot menu icons + rename on my MacBook Air for a liveUSB

So I have a liveUSB with persitence installed with unetbootin from my mac (using this tutorial : https://www.youtube.com/watch?v=MpwrrQ36yqM ), and it works perfectly. However, when booting my mac ...
1
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1answer
64 views

Can't get Ubuntu to boot from EFI in Mac

I am trying to get an old ca. 2006 macbook (technical specs here) to boot Ubuntu 14.04.2 LTS. I'm on day two of this now, having wiped the hard drive numerous times and reinstalled from the disk ...
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2answers
70 views

Toshiba satellite radius not loading bootable usb

I recently bought a Toshiba satellite radius (model: L15W-B1120). I already read countless of posts. In the posts they recommend to disable secure boot and also fastboot, I already did. I created a ...
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1answer
37 views

Secure boot / UEFI Boot issues after 15.04 installed

I have a Dell XPS 13 (2015) with Win 8.1 Pro installed. I created a UEFI USB boot drive with Ubuntu 15.04 on it. Using Windows I shrank my windows partition by 40GB. I inserted the USB and rebooted, ...
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2answers
81 views

Boot Ubuntu from external USB HDD on Retina MacBookPro 2015

I've installed Ubuntu 15.04/x86_64 on an external USB HDD, the disk has a GUID partition table, and the Ubuntu was installed with EFI boot manager. I can successfully boot the USB HDD on some Windows ...
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0answers
61 views

Installing Ubuntu dual boot with pre-installed windows 8.1

i have an HP envy DV6 laptop, with UEFI, 1 terabyte (GPT),with pre-installed windows 8.1. i am trying to install Ubuntu 14.04 (64) ,i have tried 15 also with USB. when i start installing i find that ...
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2answers
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Repair Windows Boot Loader after installing Ubuntu on MacBook Pro

I installed Ubuntu 14.04.2 LTS on MacBookPro11,5 (Retina) with Mac OS X Yosemite following this guide: https://help.ubuntu.com/community/MacBookPro11-1/Saucy The thing is that I already have Windows ...
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1answer
29 views

Ubuntu UEFI Dual-Boot without boot repair

I have an HP Pavilion with Windows 8.1 pre-installed. I managed to dual boot Ubuntu 15.04 successfully. Then, I replaced the Windows Boot Loader with the grub loader as default by entering this ...
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1answer
57 views

Lubuntu 15.04 installation problem (Installation CD + UEFI mode)

I have Windows 8.1 on my Lenovo G500 laptop and I want to install Lubuntu allongside (dual boot). Windows boot in UEFI. My problem is that after booting from the CD and choosing any of the options ...
3
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1answer
16 views

legacy boot in case of lost uefi ubuntu

I have windows and ubuntu installed in uefi mode. But, if I loose my bios config or reset settings to default, I loose ubuntu's boot. And when it's happens, I just can boot windows. I think there is ...
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1answer
35 views

Ubuntu Boot Problem00

so I have a very depressing problem actually. I'm not sure what I have exactly done, but I'm pretty sure its within the limits of removing the Windows boot loader partition that remained after I ...
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0answers
35 views

How to install ubuntu along with pre-installed window 7 home premium (UEFI) in sony vaio sve14a15fn

I really tried alot to install ubuntu alongside with my preinstalled window 7. also, read many articles posted on internet regarding dual window installation. But nothing is working for me. So, I need ...
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1answer
24 views

Troubles for Installing ubuntu in HP1000 with Windows to go

I found this question which was duplicated here that is related with the same model I have. But in my case I don't pretend to install gnu/linux alongside with win 8. In fact Windows 8 was banished ...
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0answers
20 views

Deleted EFI boot files

I had a perfectly functioning windows 8 / Ubuntu 14.04 dual boot set up on my Surface Pro 3. I was using the rEFInd bootloader and I decided that I would like to return to Grub bootloading. In my ...
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1answer
85 views

Install Ubuntu 15.04 alongside Windows 8.1

I know the question is repeated but my question pertains to a very specific issue and is likely to be useful for future users who would install 15.04. I read the original answer and it says there ...
0
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1answer
47 views

Can't boot Ubuntu from live USB on HP Spectre x360

I am unable to boot Ubuntu 15.04 from a live usb created with Lili usb creator. I have gone into the bios and disabled secure boot and changed the boot order so the usb is first on the boot order. It ...
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1answer
19 views

I can't install Ubuntu besides windows without format

So I have a SSD of 120 GB on which I have a Windows 8.1 installation. I decided to install Ubuntu besides my Windows 8.1 on my ssd, all went good, I started configuring the OS and installing drivers. ...
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0answers
39 views

Linux touchpad problem [closed]

I got new laptop here's what happened: Touchpad works in fedora in UEFI. Everything works fine, after install and using couple hours including multiple suspend. After shutdown, no touchpad in xinput, ...
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1answer
50 views

Cannot boot into Ubuntu after install

I installed with what I thought were the recommended partitions but I think I may have done something wrong. I'm not loading windows or any other OS and I don't have anything indispensable on the ...
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0answers
13 views

installing ubuntu 14.04 LTS on ASUS UX303LN [duplicate]

i'm trying to install ubuntu on my laptop asus UX303LN in dual boot mode, but i got some problem. my configuration : GPU : GT840m, Hd 4400 CPU : i5 - 4210u HDD : 500GB SecureBoot : Disabled CSM : ...
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0answers
43 views

Ubuntu - win 8.1 dual boot - ssd and uefi woes

I built my new computer last week and decided it was about time I installed my dual boot. I disconnected the gpu as I was getting an out of range issue with the monitors, presumably as a result of not ...
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0answers
19 views

Ubuntu 14.04 Booting Straight to BIOS

I shut down my laptop (a Samsung 350v5c previously running Windows 8 but now running Ubuntu 14.04) fine last night but when I came to boot up this morning my laptop kept taking me straight to the BIOS ...
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2answers
80 views

Problem with dual-booting Ubuntu 14.04.2 and Windows 7 x64 Ultimate

I have a very interesting question. Okay, so when I boot Ubuntu 14.04.2 x64 from my USB stick, it doesn't detect Windows 7! I have tried to convert my disk to basic, but I don't seem to have an option ...
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0answers
26 views

Can't dual boot ubuntu with windows 8.1 on ASUS ROG Maximus VII Formula

I have a desktop with following specs: Asus ROG Maximus VII Formula motherboard Intel i7 4790k processor Nvidia GTX 970 graphics 3TB WD Hdd I am not able to install ubuntu 15.04 with windows 8.1 ...
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0answers
50 views

I am having trouble booting the Ubuntu 15.04 64-Bit ISO file on computers with BIOS, and no UEFI support

I tried booting the Ubuntu 15.04 Installation DVD on a computer that was able to boot and install Ubuntu 14.04.2 Long Term Support, but it would just hang for a while and then skip trying the DVD. I ...
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0answers
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No native resolution available on grub/915resolution on Grub-efi

When I had grub-pc on MBR legacy bios mode (a long time ago), the screen resolution was the native one on my laptop (1366x768 on the ThinkPad x220). However, now I'm using EFI, and videoinfo shows ...
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1answer
31 views

Installing to external USB Flash/HDD UEFI

I want to install Ubuntu to an external usb drive so as not to make any changes to the Laptop I am using (UEFI Windows 8.1 pre-instaled) If I choose manual partitioning during installation and choose ...
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2answers
117 views

UEFI or Legacy? Which is advised and why?

While I know some facts about UEFI and Legacy and basic differences between them, like UEFI allowing for faster booting (I've checked this question already, but it doesn't answer mine), I have a bit ...
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0answers
34 views

Install Ubuntu with two drives and UEFI [duplicate]

I have a very specific question about my installation atempt of ubuntu. The situation: 256GB SSD with Windows 7 64bit installed on it 1TB HDD with a 700 GB nfts partition used for music and other ...
1
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1answer
35 views

I want the Grub menu to not show up, but some chages don't seem to affect anything

I currently have this file setup in the /etc/default/grub loader: GRUB_DEFAULT=5 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> ...
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3answers
72 views

Booting Ubuntu 14 on Samsung laptop. rEFInd does not see the hard drive

Good day. I am having a really hard time trying to get Ubuntu booting on my Samsung Series 3 laptop. Ubuntu has been installed (and it's the only OS), but didn't boot. I have been through common ...
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1answer
47 views

Ubuntu 15.04 : cannot boot afer upgrade

I have a dual boot windows 8.1 / ubuntu on a Dell XPS13 with UEFI secure boot enabled. Yesterday, i just upgraded to the latest ubuntu (apt-get upgrade) and when i rebooted i got a message saying ...
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0answers
26 views

/casper/vmlinuz.efi: not found for ubuntu 14.04.2 LTS

/casper/vmlinuz.efi: not found is the error that is shown when i tried to start ubuntu for using vmware by downloading an .iso file for Ubuntu 14.04.2 LTS. What should I do now ? Also , when I ...