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

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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 ...
2
votes
1answer
1k views

How to change grub-bios to grub-efi

So a while ago I installed Ubuntu on my MacBook. I had to reinstall it because something in the update manager messed up. Not to concerned about that but for some reason after the installation Ubuntu ...
1
vote
1answer
19 views

Dual-Boot Problem with Pre-Installed Windows 8.1 & Ubuntu 14.04

I do understand similar questions already exist. Yet mine seems to be a problem that despite trying hard to address, I haven't been able to solve. Despite having a working Ubuntu LTs 14.04 ...
1
vote
1answer
34 views

How would I go about dual booting KALI with UBUNTU

I have a USB drive with 8GB plugged into my port for about 3 hours trying to figure out how I go about dual booting Kali onto my Ubuntu. Yes, that is crazy. using ubuntu 14.04 LTS as current OS ...
1
vote
1answer
890 views

How to make update-grub recognize zfs datasets as root in /etc/fstab and add minimal set of zfs options?

I'm having trouble to find out how to make update-grub of grub-efi 2.02~beta2-9ubuntu1 recognize the specification of a ZFS dataset as root device in /etc/fstab and conditionally add a minimal set of ...
1
vote
1answer
228 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, ...
1
vote
1answer
2k views

grub rescue, blind mode

i updated osx last night and when i try to boot to linux, i get sent to the grub rescue prompt. i have performed the following steps: set prefix=(hd1,gpt5)/boot/grub (contains grub.cfg but mod ...
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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 ...
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 ...
0
votes
1answer
36 views

Dual boot problem after upgrading to 16.04

During the upgrade to 16.04 something went wrong (related to shim-signed and problems with /boot/efi) and it was not completed. After some work I managed to have everything installed and Ubuntu seems ...
0
votes
1answer
44 views

Can't boot Windows 7 from USB, GRUB still there

I need to install Win 7 on a computer that previously had Ubuntu 14.04 installed. I created a bootable USB with the Windows 7 ISO on it, but I can't boot from it. From the BIOS/UEFI (not sure) I ...
0
votes
1answer
59 views

linux mac single boot efi question

Linux noobie here.. i have a couple of things going..i have successfully loaded linux on my 2010 mbp. using this process:http://heeris.id.au/2014/ubuntu-plus-mac-pure-efi-boot/ it went very smooth. ...
0
votes
1answer
297 views

Error when installing the grub2 package in /target/

I'm new to Linux and I have only used Windows so far (Currently: windows 8). But for a Bachelor Project at my university, I was advised to use Linux in combination with computations in statistical ...
0
votes
1answer
111 views

Fresh install boots into grub

Linux newbie here. Just recently reinstalled Ubuntu and every time I boot, I get thrown into the grub shell. I've looked everywhere, wasted a lot of time and can't track the problem for the life of ...
0
votes
1answer
95 views

Make a portable Ubuntu on a USB stick (bootable on Windows 8.1)

This is actually quite similar to a question posted one year ago Make a portable Ubuntu on USB stick (bootable on MacBook/iMac). I meet the same problem on my Lenovo ThinkPad X1 Carbon with Windows ...
0
votes
1answer
354 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, ...
0
votes
1answer
129 views

Dualboot Windows 8.1/Ubuntu 14.04 No Windows Bootloader on grub2

So, I had Windows 8.1 and Ubuntu running fine on my laptop until Ubuntu updated to 14.10, after that Ubuntu could not load, just a Purple Screen and a Blinking CapsLock Key, so I booted into Windows ...
0
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1answer
87 views

Visualizing linux GPT partition (EFI) from Windows Host

I created a rescue grub.iso using the following script. This code worked for me when I using Windows 7, Ubuntu 12, MBR: #!/bin/sh set -e wk_dir=$(mktemp -d "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX") mkdir -p ...
0
votes
1answer
961 views

Problem understanding a grub.cfg line with search.fs_uuid

while learing and adjusting my boot setup, I am stuck unterstanding this content in my grub.cfg on the EFI patition of my drive: search.fs_uuid <uuid> root hd8,gpt5 set ...
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
654 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
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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
179 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
478 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
1answer
312 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
875 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.). ...
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votes
1answer
340 views

“GRUB installation failed” What do I do?

I'm trying to install Ubuntu Studio version 14.04.2 (alongside my Windows 8). Everything seems to go fine during the installation until at some point this message pops up: GRUB installation failed ...
3
votes
0answers
364 views

Enabling SecureBoot

I want to enable Secure Boot on my asus ux303ln laptop to enhance security. This means I do not want to use "shim" bootloader to be able to dual-boot into Windows, and I do want to have my own ...
3
votes
0answers
1k views

how to enable secure boot after the installation

Kubuntu 14.04 64bit on a MS-DOS (MBR) type HDD (sda4) Kubuntu 14.10 64bit on a GPT type HDD (sdb5) Windows 8.1 64bit on a GPT type HDD (sda3) these are my installed OSes, both kubuntu installations ...
3
votes
0answers
986 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
0answers
367 views

Lenovo onekey stuck in GRUB

I have a Lenovo g50-45 with onekey recovery with Windows 8.1 pre-installed. I dual booted with Ubuntu. Then I uninstalled Ubuntu. then tried to reinstall with USB using onekey. I got this screen: ...
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0answers
122 views

windows 8.1 won't let me boot using Ubuntu

I have a Lenovo laptop that came pre-installed with Windows 8. I have tried both desktop versions of Ubuntu, and I get the same result. Upon restarting mt laptop I get a start screen called 'windows ...
1
vote
0answers
351 views

live-build / lb config help needed

Hi I'm trying to build custom iso for my asus t100ta wich is uefi only My goal is to make it bootable grub-efi 32bit My question is how do I specify mainline kernel=>(3.16) and grub-efi bootable? ...
1
vote
0answers
6k views

Make a portable Ubuntu on a USB stick (bootable on Macbook/iMac)

I have a Macbook Pro 8,1 (early 2011 model). My goal is to have Ubuntu installed onto a USB stick what I can plug into any Macbook / iMac (also potentially any pc) and use Ubuntu anywhere. Here is ...
1
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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 ...
0
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0answers
17 views

Add grub menu for OS X

I installed Ubuntu 16.04 Desktop on my MacBook Pro, and cannot boot OS X now. My disk partition table is: Device Start End Sectors Size Type /dev/sda1 40 409639 409600 ...
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0answers
25 views

Cannot boot with EFI

Please see my GParted config: https://goo.gl/photos/RAAvSgopY23wzQg16 And a warning which might be unrelated. I installed another Ubuntu to the free space which restored my grub. But when booting ...
0
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0answers
26 views

Bootable device not working

I have HP-15-du005tu, downloaded the latest version of Ubuntu i.e 16.04 and using rufus. I've made a bootable device but whenever I restart using advanced mode (win 8.1) it always says bootable device ...
0
votes
0answers
42 views

Can't boot into Ubuntu 15.10 without 'idle

I'm using Ubuntu 15.10(EFI 64bit) on MSI GS40 laptop, which has Intel Skylake processor and Nvidia's dedicated GPU. I couldn't boot to Ubuntu's installation stage without giving GRUB's boot option ...
0
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0answers
50 views

Dual Boot Ubuntu & Kali Linux

I have the following problem: I have a USB Flash drive on which I have 4 partitions. The first, a windows accessible fat32 partition, the a second partition on which I have Kali Linux, on the third ...
0
votes
0answers
25 views

Can someone help with the boot report?

I'm having problems booting Ubuntu on my Toshiba Satelite laptop. Before I had Windows 10 and never had problems with boot. I ran the USB-Live with Ubuntu, installed Ubuntu but now can't boot from my ...
0
votes
0answers
190 views

No option to Install Ubuntu 15.10 alongside Windows 10

I am having a problem with installing Ubuntu alongside Windows 10. I do have a basic disk, so that is not the problem. I also booted into the installer from a USB in Windows Advanced Startup. Before ...
0
votes
0answers
124 views

Can't boot form USB in UEFI

I have an HP envy dv6 Notebook (windows 10) and I can't load from my usb. The usb works, I tried on others computers, I already changed the boot order. I tried in both ways, efi and legacy, but the ...
0
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0answers
68 views

Cisco UCS and Ubuntu

I'm attempting to install Ubuntu 14.04 iso found here http://www.ubuntu.com/certification/hardware/201512-20310/ onto a couple Cisco UCS C220 M4 chassis. The installation happens flawlessly and ...
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0answers
112 views

How to recover ubuntu after converting MBR to GPT?

I have converted disk partition table from MBR to GPT using disk AOMEI Partition Assistant Professional Edition from Windows in consequence I lost grub and therefore Ubuntu from booting though Windows ...
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0answers
61 views

how to move/create efi and grub to second drive (boot-repair)?

I used to have a Windows 8 / Ubuntu dualboot with Windows installed on a ssd and Ubuntu installed on a hdd - the efi partiton lies on the ssd. Now i want to use the ssd otherwise and just want to use ...
0
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0answers
137 views

How to reinstall grub-efi-amd64 on 15.10?

I tried to install winusb by a .deb package for wily found con launchpad.com. It didn't install. The software center just sat there "installing" with no progress. After that, I tried to install ...
0
votes
0answers
91 views

Does grub need constant access to bootmgfw.efi?

I'm trying to get a new laptop to dual-boot Kali and Win10. Grub, however doesn't see the Windows EFI install. This answer looks like it should work, but I'm wondering, do I need to add the partition ...
0
votes
0answers
113 views

How to get EFI for 32 bit instalation

I have a tablet with intel atom cpu and can't boot 32 bit ISO image in it. I heard that developers don't want to develop this but I wonder what is the challenge on doing so. I tried disabling secure ...
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votes
0answers
37 views

Ubuntu 15.10 doesnt boot (low graphics error)

After trying to migrate my USB installation to my formated (ext4) SSD and failed to do so (How to migrate ubuntu 15.10 to an other disk) I tried to fresh install (using the liveDVD i have ) ubuntu ...