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

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0
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2answers
4k 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 ...
2
votes
3answers
3k views

Can't load GRUB all of a sudden (UEFI problem)

So, the last time I used my Ubuntu installation was last night. Today, as I booted it up, it told me that booting grubx64.efi is not allowed. Easy enough. I know how to re-enable it from my BIOS. ...
0
votes
0answers
35 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 ...
31
votes
3answers
93k views

How can I change/convert a Ubuntu MBR drive to a GPT, and make Ubuntu boot from EFI?

I recently have upgraded my PC, my new Motherboard (ASUS M5A99X EVO) uses UEFi instead of the regular MBR option. I have a Ubuntu 11.10 installation that I did when I had my previous hardware (MSI MS ...
0
votes
2answers
29 views

Why showing two vmlinuz and initrd.img in update-grub?

shady@shady:~$ sudo update-grub Generating grub configuration file ... Found linux image: /boot/vmlinuz-3.13.0-76-generic Found initrd image: /boot/initrd.img-3.13.0-76-generic Found linux image: ...
0
votes
2answers
109 views

Package errors on every install

SO I just installed Ubuntu 15.10 on my mid-2014 Macbook Pro Retina as a standalone partition. Everything works fine and every applications I installed are working too, but I still get a few errors ...
0
votes
1answer
111 views

Can't remove or install kernel

I accidentally deleted my /boot partition but I was able to get it back with grub-install I'm trying to chroot and install the kernels again via this guide:How to restore a system after accidentally ...
1
vote
2answers
78 views

How to totally remove ubuntu from boot menu after Windows dual boot

I dual booted windows 10 and ubuntu. Now, I don't want the Ubuntu. So I deleted the ubuntu partitions. Next, I used the Windows recovery drive to run bootrec.exe /fixmbr in cmd.So If I power my pc ...
0
votes
0answers
47 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
votes
2answers
25 views

the efi boot order keeps being forgotten

I installed Kubuntu a few days ago, and I have in a partition alongside windows (all UEFI). Right now if I boot the computer the windows boot loader starts and Windows starts, so to start ubuntu I ...
1
vote
0answers
15 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 ...
0
votes
1answer
40 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
54 views

Installed to external drive, Grub using wrong architecture

I installed Lubuntu on a flash drive as you would an HD (not live/squashfs). But whenever I boot it I get a grub rescue prompt. It says it can't find /boot/grub/i386-pc/normal.mod which explains the ...
4
votes
2answers
11k 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 ...
1
vote
2answers
435 views

Issues dual booting Ubuntu 14.04 and Windows 8 on Lenovo z50-70

I've attempted unsuccessfully several times to install Ubuntu alongside Windows on my new laptop. Initially Ubuntu 14.04 did install, but I was unable to boot it, after trying various things. I ...
0
votes
0answers
62 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 ...
0
votes
0answers
37 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
votes
0answers
74 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
2answers
40 views

What to do with previous EFI partition during new installation?

I have a laptop which came with Ubuntu 14.04 installed. I want to upgrade it to 15.10. But there is a EFI partition of size 200 MB in it. There are total 4 partitions - EFI Ubuntu This is where I ...
2
votes
1answer
175 views

Accidentally deleted efi partition

So, I really screwed things up... Long story short, I deleted my windows 8.1 efi partition and now cannot boot into windows. Furthermore, I don't even have an efi partition left to create a linux ...
3
votes
3answers
16k 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
0answers
19 views

Grub efi amd64 signed failed to install into /target/ [duplicate]

I have a Lenovo B50-30 FreeDos, I upgraded my BIOS. I was installing Xubuntu (xubuntu-14.04.3-desktop-amd64), but during the installation, the following message appears: grub-efi-amd64-signed failed ...
0
votes
1answer
36 views

Grub last update (17/11) problem

After the latest Ubuntu, so Grub update, my computer has problems to open immediately Grub for choosing the OS. Appear an error message saying: Failed to open \EFI\Microsoft\Boot\grubx64.efi - Not ...
2
votes
2answers
888 views

error symbol 'grub_term_highlight_color' not found

My dual boot Ubuntu/Windows installation on a Samsung Series 7 laptop is suddenly broken, I do not know why. I have not made an update, and the laptop was not even connected to the internet when it ...
3
votes
0answers
283 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 ...
2
votes
1answer
333 views

Can't boot to my usb to install Ubuntu

Recently I deleted Ubuntu gnome desktop from my new laptop dual booting with windows 8 and also repaired the start up so that it would go to windows automatically. However now I want to install Ubuntu ...
0
votes
1answer
198 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
77 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
80 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
201 views

Acer Aspire V3 does not recognize my EFI partition

I just installed Kubuntu on an Acer Aspire V3 netbook with a SSD using GPT and the following partition layout: 1 MB unformatted partition with boot_grub flag, 200 MB FAT32 partition with boot flag, ...
0
votes
0answers
64 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 ...
5
votes
3answers
18k 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 ...
0
votes
1answer
285 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, ...
1
vote
1answer
246 views

How to make a UEFI compatble ISO with grub-mkrescue?

I have been following this guide to produce a customized version of Ubuntu. As of now, the structure of the CD is complete. I just have to generate a bootable ISO image with the command: sudo ...
0
votes
0answers
96 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 ...
1
vote
1answer
39 views

“Fixing Grub” in single boot installation process

I installed Ubuntu 14.04.02 on my 2011 Macbook Pro following the instructions at this page. After the installation completed, the impulse to play with my new toy rushed over me and I took a little ...
-1
votes
1answer
215 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 ...
0
votes
1answer
134 views

Problem in booting from new installation of Ubuntu 14.04 to a new ssd Hard disk

I try a lot of times to install Ubuntu 14.04 toy a new disk in my desktop. But grub never worked. After reboot always goes to rescue grub command line with the message can “open” the disk see image 1. ...
1
vote
2answers
273 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 ...
0
votes
2answers
767 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 ...
1
vote
1answer
98 views

How to boot Ubuntu automatically?

I am using Ubuntu GNOME 13.10. I have made one backup image with Clonezilla. The backup includes 2 partitions — one is /dev/sda1, where is the EFI (only the EFI folder from /boot/efi/EFI), and the ...
2
votes
0answers
340 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: ...
1
vote
0answers
105 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 ...
2
votes
2answers
65 views

How do I install for a Mac while the Mac's hard drive is in a PC?

Host = HP Pavilion i7 q 820 Target = Macbook Pro 6,2 Basically I have the drive partitioned for swap and boot, with the ISO already copied to the drive, how can I install grub for that target from ...
6
votes
3answers
19k 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 ...
1
vote
1answer
179 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, ...
0
votes
2answers
33 views

Should grub be removed before reinstalling Ubuntu?

I once installed Ubuntu alongside Windows 8. I then removed Ubuntu by formatting the partition. Ubuntu was gone but the grub remained. Should I remove grub before installing Ubuntu again?
1
vote
2answers
468 views

rEFInd showing 3 ubuntu .efi instead of 2

This is not really a problem, though I am just curious to why do I suddenly see 3 ubuntu, instead of the usual 2. It should be grub64.efi and shim64.efi. Though now it is grub64.efi, ...
1
vote
1answer
92 views

Problems with refind on MBP

I'm running ubuntu on my late 2013 MBPr and dumb decisions have me in a pickle. A while ago I had a triple boot system, but problems with OSX made me more reliant on Ubuntu, and recently I've been ...
5
votes
2answers
287 views

How do I install two independent Ubuntu installations on a single hard drive with UEFI?

For security reasons I would like to install a secondary completely independent operating system on a single-hard-drive computer using UEFI. Both installations should be able using different LUKS ...