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

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11 views

dual boot problem with ubuntu 16 and windows boot manager in uefi

I installed ubuntu in my dell inspiron 3521 laptop upgraded to windows 10 and uefi mode. While installing it detected windows as windows boot manager.. Installation was easy ubuntu is fine.. The ...
0
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1answer
22 views

Two instances of grub

I tried installing Ubuntu on my laptop several times and finally succeeded(dual boot) I need to select ubuntu from boot menu in order to open grub and start ubuntu So that is not my problem My actual ...
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0answers
8 views

Linux Boot error

I am having trouble booting into my linux laptop. When I press the power button, the screen starts up and an endless stream of [[20~[[20~[[20~........ Appears on screen. Also, the Ubuntu logo keeps ...
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0answers
20 views

Why Do I Keep Getting GRUB Command Line on Startup - Dual Booting Wins 8.1 and Ubuntu 14.04

I migrated data on my laptop's HDD which contains Windows 8.1 to my SSD and replaced the HDD with the SSD (My laptop has 2 hard drive bays btw). Currently, my Windows 8.1 and Ubuntu 14.04 are on their ...
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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 ...
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0answers
23 views

Discussion/Needing Help (Acer Aspire ES1-512-P0SY)

As said in the title, I want to discuss of why Linux (here more specifically Ubuntu) sometimes will not work. Here's my situation: I currently have an Acer Aspire ES1-512-P0SY and I feel like this ...
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2answers
246 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, ...
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2answers
38 views

Ubuntu 15.10 then windows 7 dual boot issue

I've been using Ubuntu 15.10 for a while, but recently installed Windows 7 (quite reluctantly) on the same SSD (converting partition table to GPT as required) but on separate NTFS partition. I thought ...
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3answers
7k views

How to install ubuntu 14.04 on my Mac Pro 1,1 with a raw hard drive by a bootable USB stick

I have a Mac Pro 1,1 and I replaced the original hard drive with a new 3TB hard drive (just got, never initialized). I try to install ubuntu by a bootable USB stick which I crated on my Mac When I ...
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0answers
31 views

Sometimes Ubuntu stuck on Grub command line on startup

I have Ubuntu 16.04 and dualboot with Windows 10. Sometimes startup stucks on Grub command line. I just do "exit" and grub menu appears and everything is fine. What can be the problem? How to solve ...
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3answers
7k views

UBUNTU 16.04 ERROR INSTALLING GRUB

My computer has Windows 10 installed, and when I try to install Ubuntu 16.04, it does not detect Windows 10, nor does it detect Windows 10 in my partitions list. On the final step of the ...
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0answers
57 views

Installing in encrypted partition under EFI boot

I've been googleing for a bit and can not find an answer yet Im from a FreeBSD background, so you will have to forgive me a little I am trying to dual boot FreeBSD and Ubuntu I want to set up a ...
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1answer
65 views

Cannot boot with EFI

I was having problems with repairing my boot loader (grub). My GParted config looked like: I installed another Ubuntu to the free space which restored my grub. But when booting into my old ...
0
votes
1answer
49 views

Installing Ubuntu on a second internal drive in an “independent way” (no boot option)

I have a 120 Gb SSD drive (/dev/sda) where Win7 is installed and a second internal drive (/dev/sdb) that I use for data storage. Both of them have GPT partition tables. Now, I want to install Ubuntu ...
1
vote
1answer
52 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 ...
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0answers
23 views

GPT, grub and mdadm. sda drive replaced, raid rebuilt in recovery mode, but now server won't boot

This is how partition table loooks like: (parted) print Model: ATA TOSHIBA DT01ACA2 (scsi) Disk /dev/sda: 2000GB Sector size ...
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0answers
40 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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1answer
595 views

Does this answer work for UEFI computers?

One of my most popular answers is instructions on how to repair grub. Over time, others have contributed bug fixes to the answer. A recent comment, though, made me wonder if it works on newer UEFI ...
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1answer
85 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
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0answers
33 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
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1answer
77 views

No GRUB, Boot-Repair-Disk asking me to close package managers… How to proceed?

So I had a perfectly functioning triple boot system (Windows 10, Ubuntu 14.04, Kali Linux 2.0). Tonight I come home boot up my system and don't get GRUB. I tried to trouble shoot from Boot-Repair-Disk ...
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2answers
473 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 ...
0
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1answer
73 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 ...
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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?
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3answers
1k 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 ...
1
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0answers
68 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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1answer
56 views

What to do if forgot to enable EFI partition?

I have Windows 10, so I have EFI partition, but during Ubuntu installation I forgot to select EFI partition. Now I always should to turn on UEFI mode if I wanna to use Windows. Can I enable EFI ...
1
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1answer
107 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 ...
1
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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 ...
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0answers
59 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
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0answers
26 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 ...
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2answers
125 views

WIndows 8 stopped booting

I have installed Ubuntu 14.04 on a laptop which came with Windows 8 installed. It was working fine for almost a year and I was able to boot Ubuntu and Windows from grub screen but from few days ...
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votes
4answers
20k 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 ...
2
votes
1answer
576 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 ...
2
votes
3answers
4k 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
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0answers
195 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 ...
33
votes
3answers
104k 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
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2answers
112 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: ...
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2answers
271 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
221 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
191 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
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0answers
144 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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2answers
29 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 ...
0
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0answers
84 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
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1answer
63 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. ...
5
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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 ...
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2answers
515 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
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0answers
123 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
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0answers
74 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
143 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 ...