Questions about using grub on EFI/UEFI systems relating to configuring, installing or removing grub from EFI/UEFI partitions.

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2answers
1k views

GRUB not appearing after upgrade to Windows 8.1 [duplicate]

I had previously dual-booted Ubuntu 13.10 with Windows 8. Then I upgraded it to Windows 8.1. Since then my GRUB has not been appearing. I started Ubuntu from my bootable USB drive and ran boot repair. ...
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votes
2answers
1k views

Installing Ubuntu 14.04 on macbook pro EFI

Macbook pro: mavericks, 5.2, graphics: nvidia geforce 9600M I followed the guides from here: https://help.ubuntu.com/community/UEFIBooting#Detect_.28U.29EFI_firmware_processor_architecture and ...
0
votes
1answer
103 views

How do I tell GRUB to ignore other bootloaders?

I want to keep my bootloaders separately and I am wondering how to tell GRUB not to add the Windows bootloader on kernel/grub updates. I am using 14.04 and Win 8.1 on UEFI. Thank you!
0
votes
1answer
116 views

Laptop not booting

I've got a Vaio laptop that used to work with 13.10. I did an upgrade to 14.04 and since then it does not want to boot any more, that is it doesn't seem to reach grub: I'm stuck on a "BIOS" screen ...
0
votes
1answer
672 views

Boot XP from secondary HDD using GRUB2 on primary HDD

I have a computer with one HDD that has Ubuntu 14.04 as the only OS and GRUB2 on the same disk (hd0/sata0). Its partitions are: sda1 - ext4 primary sda2 - swap area sda3 - NTFS I found an old HDD ...
0
votes
1answer
2k views

manually installung Grub2 after Windows8.1 update 1

After boot-repair failed to install (both with secure boot disabled and enabled), I decided to try running grub-install manually using the following command. sudo grub-install ...
0
votes
1answer
138 views

New bootloader for Ubuntu? [closed]

Challenging it is to get Ubuntu to boot right with single Ubuntu install since the introduction of (U)EFI BIOS. I have had, and am having difficulties getting a new PC boot to from an SSD disk. It ...
0
votes
2answers
175 views

Grub Won't Even Come Up after Upgrade to 14.04 Dual Boot Win8 [duplicate]

I'm a bit of a noob, so bare with me here. I'm running a Toshiba Qosmio V1.32002. I have had a dual booted Win8/Ubuntu 13.10 traditionally, and I recently upgraded to 14.04. Now when I start my ...
0
votes
1answer
9k views

How to boot Windows 8 from a legacy MBR partition in UEFI mode via GRUB?

This question is similar to the answer of Dual-boot Ubuntu 12.10 on UEFI along Windows 8 (GRUB - error: can't find command drivemap), but Windows 8 is installed on a legacy partitioned drive. ...
1
vote
1answer
526 views

Windows 8 / Ubuntu 13.10 in dual boot - how to make Grub by default to manage it [duplicate]

good afternoon every. as it's said in the title, I have Windows 8 and Ubuntu on my laptop (EFI) and it boots automatically on Windows 8. To boot on Ubuntu, I have to change the boot order with the F9 ...
0
votes
1answer
186 views

Cannot boot into ubuntu after repartitioning

Having successfully dual-booted my system, I decided to attempt to triple-boot Kali-Linux (legacy), Windows 8 (UEFI), and Ubuntu 13.10 (UEFI). I freed up some disk space (5 gb if I remember correctly) ...
0
votes
1answer
383 views

Ubuntu 13.10 won't restart unless Windows 8.1 is first started and then shutdown

This is very strange. I have an Ubuntu 13.10/Windows 8.1 dual boot set up on my Asus N56VZ laptop. After shutting down Ubuntu, I can't restart it unless I first start and shutdown Windows 8. I'm not ...
2
votes
1answer
171 views

How to install Windows 8.1 after Ubuntu? I want to dual boot

I currently have Ubuntu installed and an empty partition to install windows in (NTFS). If I launch boot repair after installing windows , will it restore the dual boot functionality?
0
votes
1answer
151 views

How to install grub on this system

I have two Hard disk drives, as shown in the screenshot First HDD (Sda) is a MBR Disk and second HDD (Sdb) is a GPT Disk (Which has windows 8.1x64). I have installed ubuntu on Sda4 disk and ...
3
votes
4answers
21k views

Ubuntu 12.04 — grub-efi-amd64-signed failed to install into /target/

I have HP Pavillion 14-n009tu laptop (i-5, 4GB) with Windows-8 OS installed on it. I am trying to install ubuntu 12.04 as a dual boot OS on Windows8. I have disabled fast boot and secure boot options ...
0
votes
1answer
479 views

Ubuntu EFI boot partition and Windows 8.1

I installed on my laptop Windows 8.1 without SecureBoot. After that I installed Ubuntu 13.10 and created partion /boot/efi and now laptop starts only ubuntu. How can I change grub settings to choose ...
0
votes
3answers
328 views

Unable to boot on windows after installing ubunu

I just intalled ubuntu(the real one) and now i am unable to run on my previous win7. As far as i know I didn't overwrite the windows partition. If I try to launch windows it breaks down directly(with ...
0
votes
1answer
2k views

How to insert linuxefi module during boot

I am running Ubuntu 13.10 with kernel 3.11.0-14-generic. Everything was working fine, but then I did a routine software update and the computer would then not boot. Unfortunately, I'm not sure what ...
4
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2answers
3k views

How to return from grub prompt to the grub menu?

If you press escape in grub menu you endup with grub command prompt. My question is how can I go back to the menu, without rebooting?
0
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1answer
6k views

Restore backup of WinEFI or UEFI (not sure) that boot-repair made

I have a laptop that supports EFI/UEFI. I have Windows 8.1 and Ubuntu 12.04 on it. The way I installed my OSes was like this: I installed Win 8.1 in the required partitions then Installed ubuntu and ...
0
votes
1answer
3k views

Dual boot problem, black screen during the ubuntu boot

I have a problem with my dual boot (windows 8 and ubuntu 13.1) on my asus vivo book. Actually I'm writing from a live of linux-secure-remix and I already used the boot repair tools. I can access and ...
0
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3answers
1k views

13.10 doesn't boot on Vaio Pro 13

I just installed Ubuntu 13.10 on my new Vaio Pro 13, disabled safe mode, but used UEFI and not legacy mode. I did an encrypted LVM installation and erased the complete SSD. It booted just fine from ...
0
votes
1answer
451 views

fix the partition indexes OR fix ubuntu EFI

I have a GPT partition table. when i tried to repair the disk on my mac os x 10.9 it deleted the efi partition. I already created it manually but i have a problem: 1- the efi partition instead of ...
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vote
1answer
1k views

Unable to boot to Ubuntu

Just got a new laptop and removed Windows 8 and installed 13.10 using LiveUSB. Initially it was booting to "No boot media" but I was able to resolve it with boot-repair. I realized some of the items I ...
0
votes
1answer
1k views

How to repair GRUB from backup?

I have Windows 8 and Ubuntu 13.04 in dualboot. But the problem was that Windows didn't boot when GRUB is set as primary bootloader in BIOS. When the Windows EFI partition was checked as primary, ...
2
votes
2answers
887 views

Windows 8.1 - unfixable grub

I have a Gigabyte laptop that came with secure boot and windows 8. After a bit of battling, I managed to get my dual boot with Ubuntu 13.10.. Anyway, I upgraded zindows to 8.1, now grub is gone. I ...
7
votes
3answers
21k views

How to install Ubuntu server with UEFI and RAID1 + LVM

I used to install my servers with LVM over software RAID1, and grub install on the MBR of both drives. Now I have an UEFI server, and the compatibility (BIOS) mode does not seem to work. So I went ...
5
votes
3answers
19k views

ubuntu 12.04.3 LTS installation failed. says: “GRUB installation failed”

The error message is :the grub-efi-amd64-signed package failed to install into /target/. Without the GRUB bootloader the system will not load I'm trying to install it on HP pavilion g6-2303 TX using ...
1
vote
0answers
2k views

Dual boot windows 8 and ubuntu 12.04 irst, ubuntu not booting (black screen)

I'm trying to dual boot Windows 8 and Ubuntu 12.04 on amy new Asus Zenbook U500VZ with 2x 128 GB ssd in raid0 using Intel Rapid Storage Technology (Windows preloaded). After a bit of trial and error ...
3
votes
1answer
3k views

How to reinstall Ubuntu over Elementary OS on an EFI system?

First, a bit of background. I managed to dual boot Ubuntu 13.04 with Windows 8(preinstalled). I disabled secure boot. I had to go in the bios settings and change the disk order to select Ubuntu as the ...
1
vote
0answers
1k views

grub-install failed; fatal error [duplicate]

I'm having trouble dual-booting 12.04 alongside Windows 8. It's a self-assembled PC, so there's no OEM UEFI or anything like that (just to be safe, I checked the BIOS settings and it was set to ...
5
votes
2answers
12k views

Unable to boot Windows 8 after Ubuntu installation

I installed Ubuntu on a pc with Windows 8 preinstalled. After installation Grub showed Ubuntu entries and Windows 8 Boot Manager (or something similar), selecting it I got: /EndEntire file path ...
0
votes
2answers
6k views

Unable to fix broken package system

After I (painfully) managed to install Skype on my Ubuntu 12.04 LTS, I'm experiencing since months ago a packages issue I cannot fix. Have a look to my last post in order to know what caused this ...
0
votes
1answer
1k views

Can't boot Ubuntu 13.04 after installing alongside Windows 8

I've tried running boot-repair a few times with diffrent settings, to no avail. paste.ubuntu.com/5948482 paste.ubuntu.com/5948580 paste.ubuntu.com/5948657 When an option does appear in the BIOS to ...
0
votes
1answer
2k views

Runnning Ubuntu 13.04 on ASUS Laptop with pre-installed Windows 8 and secure boot enabled [duplicate]

I had installed Ubuntu 13.04. The installation went on smoothly. But, after the installation was over, there was no grub that let me decide between Ubuntu and Windows 8. So, I used EasyBCD. The grub ...
0
votes
2answers
4k views

ASUS: K55V series Laptop dual boot problem

I have LAPTOP ASUS K55V (Windows 7 Home 64bit) (I'd like to dual boot with Ubuntu) I read all the tutorials about install Ubuntu, here's what I did: Installed old version (problem: There some some ...
2
votes
1answer
731 views

Laptop that comes with Windows 8 does not show grub

I have a Sony Vaio SVE14A27CXH that came with Windows 8 and UEFI BIOS from factory. I have been trying to install Ubuntu 13.01 with no success. I have already suffered with "Operating System not ...
5
votes
4answers
30k views

Uninstalling GRUB from UEFI laptop

I installed Ubuntu alongside Windows 8, however have decided to unisntall Ubuntu. First I booted into Parted Magic and, using GParted deleted all the ext4 and swap partitions. This leaves me with ...
1
vote
1answer
4k views

Grub issue in 12.04: “Booting in blind mode.”

I just turned on my PC where I'm dual-booting Ubuntu and Windows 8 and I had the following message at startup: Invalid video mode 'text' Booting in blind mode Fortunately for me the laptop booted ...
0
votes
1answer
315 views

How do I assign a network IP & enable ssh during installation?

I need to have a bootable usb flash disk with ubuntu 12.04 x64 EFI integrated any ideas? Is there a way to install ubuntu 12.04.2 x64 as text based installation? Like the ubuntu server install? And ...
0
votes
1answer
255 views

Ubuntu efi portable

I need to install Ubuntu on my USB pendrive 3.0 in order to have my "portable computer" everywhere i go. BUT i need it to work also on EFI systems. I've tryied by installing ubuntu on a VirtualBox hd ...
0
votes
1answer
879 views

Problems on boot

Good morning! I have a little problem with my Ubuntu 13.04. Actually, I have this problem with any other linux distributive (Fedora, Fuduntu, Mandriva, Ubuntu 11.04 => 13.04, Linux Mint 14 and oth.). ...
0
votes
2answers
902 views

How to configure UEFI booting on a Macbook 8,2

I googled a while on this so let me give you the details, then the questions I have a Macbook 8,2 15" with Kubuntu Quantal installed from the MAC+AMD64 Desktop CD image. I removed every MacOS ...
3
votes
0answers
999 views

black tty screens

I get black tty screens when I hit Ctrl-Alt-F1. I already read all other similar questions but I can't seem to find a suitable solution. Here is my setup. I have a fairly new laptop (Jan 2013, Asus ...
2
votes
1answer
926 views

Unable to EFI boot after Ubuntu 12.10 install (Lenovo E30)

Basically the system won’t boot. After the BIOS screen I get the message: “Error 1692: No operating system found” I ran the ‘boot-repair’ utility without success. Here is the boot info that utility ...
0
votes
3answers
822 views

apparent low color depth on EFI Boot

I am running Ubuntu 13.04 and Mint 14 on a Mac Mini 6,2 (Late 2012) - Intel HD4000. When I boot from the legacy BIOS, I see good colour as it should appear. However, when I boot from the EFI ...
3
votes
2answers
2k views

Missing /etc/default/grub

I just re-installed Ubuntu 12.10 after having various issues, it was just time for a re-format and re-install. Installation The install went the smoothest that it has ever gone. Except that on my ...
1
vote
1answer
624 views

Getting ubuntu 12.10 and windows 8 to work correctly dualboot. Configuring GRUB

There may be several questions on similar lines. But this one is a bit different. My Windows8 installation had stopped working earlier after installing Ubuntu 12.10, (standard : cannot find drivemap ...
3
votes
2answers
8k views

Windows 8 Dual Boot Ubuntu 12.10 with UEFI broken Windows boot manager

Brand new Asus U500VZ, Windows 8 preinstalled. I removed the fakeraid, turned fastboot and secure boot off, and set the SATA to AHCI and deleted all existing partitions on both SSDs. Purchased ...
0
votes
2answers
5k views

Deleting GRUB2 which is placed in sda? And how to fix two Ubuntu entry in EFI Boot selector?

I have EFI Windows 8 in my Asus K55V laptop. EFI partition is sda1. I tried to install Ubuntu in EFI mode and created/selected separate boot partition for Ubuntu boot loader. Ubuntu installed ...