Questions tagged [uefi]

For questions about the Unified Extensible Firmware Interface, commonly used in later x86 computers as a replacement of BIOS, as well as in ARM servers and more. UEFI supports booting with and without Secure Boot enabled and legacy booting via CSM.

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How to keep grub independent of all the OSes?

I currently have the following partition scheme. 300MB NTFS Recovery 100MB FAT32 LOOKS LIKE IT IS THE EFI BOOT PARTITION 128MB Other This is empty and thus I ...
Ashhar Hasan's user avatar
1 vote
2 answers
353 views

Dual-booting Ubuntu with Windows 7 on UEFI system

I am trying to install Ubuntu 14.04 LTS on a UEFI system that already has Windows 7 installed. Windows is installed on the first SATA disk (sda). I want to install Ubuntu on the second SATA disk (...
TheJase's user avatar
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Can't get to Grub (UEFI) on Sony VAIO Ubuntu 15.04 Dual Boot

Okay. I've been trying to get GRUB to load for a long time (bordering on two years of attempts). I have windows 7 on a Sony VAIO (SVS151190X) and I am attempting to boot Ubuntu 15.04 through GRUB, but ...
Mikayla Fischler's user avatar
1 vote
2 answers
5k views

Restore EFI from Windows after Windows 10 upgade broke boot list?

I updated to Windows 10 late July, and it deleted all of the boot entries on my computer. I was able to find the correct Windows boot efi file, and added the option to boot, but I could not find the ...
IronManMark20's user avatar
1 vote
1 answer
7k views

Location of grub on gpt partition

As far as i undersood the grub program is located fully in the efi partition if i have gpt partition scheme instead just as a link like it was in the older mbr. So now if i remove linux partition will ...
Petr Nedvěd's user avatar
1 vote
3 answers
5k views

Ubuntu on 32-bit UEFI - optimal solution

I have a computer (Asus T200TA) with 2G RAM and 32-bit UEFI [Yep, what a wonderful idea to put 32-bit UEFI!]. I have two options: Install a 64-bit system, boot manually and install grub-efi-ia32. ...
marmistrz's user avatar
  • 1,129
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2 answers
3k views

Booting a Sony Vaio computer running Windows 8.1 in Ubuntu from a USB drive

I have Sony VAIO Tap 20 with Windows 8.1 installed. I want to install Ubuntu 14.04 or 15.04 on it, but I am failing right from the beginning. I cannot get Ubuntu to launch. One particularity is that ...
James Newton's user avatar
  • 1,063
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2 answers
709 views

An interesting case of Dual Boot Shenanigans. (dell inspiron 7000)

So, my harddrive recently went bust under warranty. As such, Dell shipped me a replacement. And a USB stick containing a full windows 8 installation and repair media. In the land of OEM installs and ...
Rushlight to-Ennien's user avatar
1 vote
2 answers
952 views

Install Ubuntu 14.04 on external HDD with Windows 8.1 UEFI

I recently bought a new laptop, Lenovo Essential B50-70 MCC39MB Azerty, and I had an external HDD lying around with ubuntu 14.04 on it. I thought it would be nice if I could use this HDD whenever I ...
SBylemans's user avatar
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2 answers
2k views

Can not Boot up laptop after Linux installation

I have a windows 8 laptop. I went to install fedora 21. I deleted the D drive which had nothing on it. I then installed fedora on that partition. I restarted the computer and it booted into the bios. ...
user3131261's user avatar
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1 answer
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Why do I have to repair my booting when swapping harddrives in my laptop?

I bought a new SSD for my Lenovo Thinkpad W530 (I am not sure if hadware is relevant). I installed 15.04 on the new SSD in EFI-only mode with manual partitioning (/efi, / and /home partitions, ...
sup's user avatar
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2 answers
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How to install Windows 8.1(10) in a pre-installed Ubuntu 14.04

I am currenty using Ubuntu 14.04 and I need to install Windows 10 as dual boot. I create new ntfs partition for install Windows, But I get the following error when selecting the desired partition: "...
Melina Golez's user avatar
1 vote
2 answers
4k views

Not able to boot after installing ubuntu 14.04 on a brand new dell precision tower 5810

I've just acquired recently a brand new Dell Precision Tower 5810 with preinstalled Win7 pro. It has 2 disks 4TB each. I tried to install Ubuntu 14.04 as the primary OS wiping everything from the ...
Kirk Walla's user avatar
1 vote
3 answers
4k views

Can't boot after deleting EFI boot- and Windows-partition

I got an HP Split x2 with Windows 8 pre-installed. I deleted it, and installed Ubuntu. However, I was wanting to play a few games that didn't work too well on wine, so I created a NTFS partition and ...
H. Neto's user avatar
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2 answers
10k views

How to install on and boot from external SSD on UEFI?

I need an external SSD with Kubuntu to boot on different computers. So I created LiveCD, booted from it, plugged external SSD. With the help of GParted I converted the SSD to GPT and created ...
Eugene's user avatar
  • 125
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1 answer
9k views

Can I install Ubuntu 14.04 on Sony VAIO computers with UEFI?

I have a Sony VAIO SVF14213CLB laptop, with a Core i3 64-bit processor. This computer has UEFI security, and I want to install Ubuntu 14.04. I want to know if the hardware is compatible with Ubuntu. ...
user298101's user avatar
1 vote
2 answers
8k views

Can't restore my gpt data with gdisk

So I have a pre-instaled windows 7 EFI boot on SSD in GPT Ubuntu installer couldn't recongize the SSD so I saw that I should try to zap the gpt using gdisk , before doing that I made a backup to a ...
X_Splinter's user avatar
1 vote
2 answers
5k views

Installing Ubuntu in a Acer E1 with UEFI [closed]

I have a cheap $300 Acer E1 series laptop with UEFI and Windows 8. Btw, the only "BIOS" in the boot menu is UEFI. I want to wipe windows 8 COMPLETELY off the hdd and replace it with Ubuntu or Fedora. ...
please click this's user avatar
1 vote
3 answers
7k views

Ubuntu 13.10 installer (alongside windows 8) and gpt partition

I found several answers regarding that issue but I'd still like to get some confirmation on how to behave in this situation. I bought a quite recent laptop with a pre-installed Windows 8 on a 128Gb ...
Nathan's user avatar
  • 21
1 vote
6 answers
31k views

"Kernel panic - not syncing: No init found. Try passing init = option to kernel" after installing Ubuntu with UEFI

I decided to install Ubuntu 12.04 LTS second system with windows 7, UEFI. Made a LiveUSB, downloaded, started the installation. The installer showed four sections, one for efi already existed (...
MZHI's user avatar
  • 11
1 vote
2 answers
3k views

How Do I Reset my Ubuntu Password on a Laptop That Came with Windows 8 Pre-installed? [duplicate]

My laptop came with Windows 8 pre-installed and uses UEFI (the successor to BIOS) by default. It has been working fine for me for a few months. I decided to install Ubuntu with the goal of a ...
lighthunter's user avatar
1 vote
2 answers
927 views

After Update Ubuntu 12.04 does no longer boot on a UEFI machine

I got a computer running Ubuntu 12.04 64bit with UEFI. Today (2013-09-21) I installed all updates that were available without carefully reading through the list (shame on me), since noone touched the ...
soulsource's user avatar
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1 vote
6 answers
13k views

Installing Ubuntu 12.04 on a Lenovo G500

I recently bought a Lenovo G500, and had a rather entertaining time trying to get Ubuntu installed. Since it came with Windows 8 installed it turned out to be an unexpected challenge. For anyone ...
user192775's user avatar
1 vote
2 answers
250 views

Not Shutting Down

Using Raring Ringtail on Acer V5 (UEFI Bios mode). The system simply refuses to shut down. I have tried the sudo poweroff as well as shutting down from the system menu. Each time it just reboots ...
Della's user avatar
  • 505
1 vote
2 answers
11k views

What command launches the UEFI shell?

I'm trying to set up a UEFI boot system, and I've gotten all sorts of wonderful things done, except I can't figure out how to launch the UEFI shell. efibootmgr didn't work for me, so I need to run a ...
js404's user avatar
  • 11
1 vote
1 answer
299 views

Does Ubuntu still brick certain devices?

I read previously on other threads that installing ubuntu on some newer machines can cause the problems with the bios, where 'Ubuntu' will write over the bios, and cause the machine to end up being a ...
Ronak Chauhan's user avatar
1 vote
3 answers
7k views

"No operating system found" when booting from live CD in UEFI mode on Sony Vaio with Windows 8

I tried all the options explained in the help page regarding booting in UEFI mode, but when I boot Ubuntu on my Sony Vaio (which already contains Windows 8) in UEFI mode using my Ubuntu CD as my first ...
Manorath Mishra's user avatar
1 vote
1 answer
646 views

Ubuntu 12.04.1 and Windows 7 on same PC

Have Ubuntu installed on a 1TB SATA 3 Hard Drive. Also have Windows 7 installed on a separate 1TB SATA 3 Hard Drive. Unplugged Windows Hard Drive before installing Ubuntu as previous versions of ...
apollo's user avatar
  • 11
1 vote
2 answers
257 views

Can I Replace New PC HD With My Old PC's Ubuntu 12.04 HD

I just ordered a new PC with an i7-3770 & W8 so it will be UEFI constrained. I have no interest in running windows and have a Ubuntu 12.04 system configured exactly as I want it. Can I remove the ...
davedo2's user avatar
  • 121
1 vote
3 answers
16k views

Installing Ubuntu 12.10 on new computer with Windows 8 [duplicate]

Possible Duplicate: Installing Ubuntu on a Pre-Installed UEFI Supported Windows 8 system I recently purchased a new HP computer (P6-2330) with Windows 8. I have tried unsuccessfully to install ...
rft183's user avatar
  • 1,414
1 vote
3 answers
4k views

How can I get Ubuntu 12.04 to boot on a Gigabyte 990Fx MB (efi problem?)

I am trying to install Ubuntu 12.04 on a home made system with a gigabyte 990Fxa MB. I can make it through the install process. It does not boot. Windows 7 does boot on the same machine. Suse 11.4 ...
Jeffrey's user avatar
  • 11
1 vote
1 answer
2k views

Installing 12.04 on a system with windows 7 and UEFI

I'm trying to install Ubuntu 12.04 (64bits) next to a windows 7 preinstalled system. I have found some troubles during the process. Windows 7 partitions are like shown in figure [a link] https://www....
Fernando García Redondo's user avatar
1 vote
2 answers
5k views

boot partition does not get updated in LVM setup

I am on the ubuntu 12.04 64bit Beta right now. Having a more exotic partition setup: - EFI - /boot PARTITION (fat) - LVM (encrypted) | |- /root |- /home |- /swap Now I noticed that my ...
meceso's user avatar
  • 41
1 vote
1 answer
114 views

Ubuntu Chromebook numpad not working - Acer 315

Hi my numpad is not working on Acer 315 Chromebook with Ubuntu Mate 22.04.02 Mrchromebox UEFI BIOS flash install. Everything else works great. The numpad, page up/down, home/end, and right enter key ...
tjd861's user avatar
  • 31
1 vote
1 answer
908 views

Ubuntu SSD not detected as a bootable device

I recently installed ubuntu 22.10 on a SSD to use a secondary OS for my laptop (I usually run it with windows). My intention was to connect the SSD using a USB cable and boot it from BIOS or using ...
Riki LC's user avatar
  • 31
1 vote
1 answer
486 views

Dual booting ubuntu and gentoo with one disk, EFI

Background and problem I want to experiment with gentoo on a laptop that previously only had ubuntu installed. To be clear; the ubuntu installer configured the entire disk for me. Afterwards I made a ...
Pieter Breed's user avatar
1 vote
1 answer
9k views

Ubuntu 22.04 + Windows 10 (dual boot): GRUB not showing and not

After installing Ubuntu 22.04 on a machine which already had Windows installed I can only boot into Ubuntu, but not Windows anymore. Here is what I did: installed Ubuntu 22.04 from here: https://...
tiefenauer's user avatar
1 vote
1 answer
8k views

Can't access grub menu no matter what I try | Ubuntu 22.04 | EFI boot

I wanna access the grub menu so I can play around with kernel parameters and have them be temporary per boot. My system is EFI so I tried holding Esc at boot. When I do, it gets frozen at the Lenovo ...
user avatar
1 vote
1 answer
3k views

Was asked to create efi partition as well as bios grub partition while manually formatting whole drive in Ubuntu 22.04 installation. Is it normal?

I was running Windows 10 fresh on my pc. It was a uefi system (i think but long ago i turned secure boot off and turned on legacy bios mode in my bios settings.) I had installed and removed and ...
Srijan Mukherjee's user avatar
1 vote
1 answer
7k views

GRUB menu not showing after installing Ubuntu 22.04 LTS [Dual Boot]

I have installed Windows 11 in SSD1 and then installed Ubuntu 22.04 LTS in SSD2 but on restart I couldn't see GRUB menu which allows me to switch between Windows and Ubuntu. I tried repairing boot ...
Atinesh's user avatar
  • 328
1 vote
1 answer
3k views

How to delete GRUB from the wrong drive?

I have 2 SSDs: 500GB SSD splitted to 250GB of Windows 10 and 250GB of Ubuntu 20.04 The other 250GB SSD is only Windows 10. I installed Ubuntu 20.04 and the GRUB was somehow installed on the wrong ...
Foobarer's user avatar
  • 367
1 vote
1 answer
77 views

Transfer old BIOS ubuntu to new UEFI machine?

If I install from scratch on a new UEFI machine, can I just copy everything except /boot from an older machine being replaced? Or is there BIOS and kernel related stuff somewhere outside of /boot that ...
user1160711's user avatar
  • 2,277
1 vote
2 answers
1k views

bcdedit /enum firmware does not show grub

I just installed Lubuntu 18.04 on a laptop with Windows 10 on another partition of its disk. As a final step it installed grub as well. But after booting it goes directly to Windows 10 without giving ...
xralf's user avatar
  • 45
1 vote
2 answers
3k views

Dual Boot change to UEFI

I currently have a dual boot setup where I have Windows 10 on one disk and ubuntu on another. This was installed in CSM mode, not UEFI. It works great, when I start my PC I can select Ubuntu or ...
PonyTale's user avatar
  • 111
1 vote
2 answers
829 views

Firmware update on Dell Latitude 5510 fails with "missing signed bootloader for secure boot"

Using Ubuntu 21.04, I'm trying to update the firmware on a Dell Latitude 5510. The command is fwupdmgr update, and it looks good to begin with. I receive this message: Upgrade available for System ...
Bernt Ribbum's user avatar
1 vote
1 answer
669 views

I have two grub.cfg files

I'm trying to dual-boot Windows 10 and Kubuntu but since I tried setting grub as my boot manager with bcdedit /set "{bootmgr}" path \EFI\ubuntu\grubx64.efi in Windows' BCDEdit, my screen is ...
manos's user avatar
  • 19
1 vote
1 answer
860 views

No Option to Select Operating System - Stuck in Aptio Setup Utility - Please Offer Diagnosis [closed]

I recently purchased an M1T Mini PC Desktop Computer Intel Celeron N4100 (I believe this is an SSD device) which came with pre-installed Windows 10. Within Windows 10 I adjusted the size of some ...
Ramblin Sarap's user avatar
1 vote
1 answer
508 views

Does Ubuntu 20.04 still boot if I remove the whole /boot/efi/EFI/Microsoft directory?

I deleted the Windows partition on my Dell Notebook and installed there Kubuntu 20.04. The grub boot menu still shows "Windows Boot Manager". I want to remove this line by removing the ...
John L.'s user avatar
  • 59
1 vote
1 answer
50 views

How can I set a specific Operating System to boot using bash (UEFI)

I want to create a Script that, when executed, changes the boot order to boot a specific operating system with a known partition, like the MacOS "Start Volume" setting. Is there any way this ...
lorhof1's user avatar
  • 26
1 vote
1 answer
1k views

Kernel boot command line altered in uefi mode

I want to prepare custom installation ISO for Ubuntu 20.04 server that will use autoinstall feature to install system automatically. To achieve that I have to add this to the boot command: autoinstall ...
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