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Questions tagged [uefi]

Questions about the Unified Extensible Firmware Interface that finally replaced the BIOS on newer desktops and laptops with the release of Windows 8. UEFI is independent from CPU architectures and supports booting via UEFI with and without secure boot enabled as well as legacy booting via CSM.

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11 views

Need assistance with wipe and reinstall Dual Boot

Summary background: I have an old Aspire E1-470P upgraded to Win10. It was running slowly so I added a dual boot and was happy with performance. I wanted to keep my Windows partitions for situations ...
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0answers
13 views

What could be causing a gray screen with limited top bar functionality on waking up Ubuntu laptop from sleep (open the laptop up)?

I recently changed a couple things in my Dell UEFI (BIOS). However, I was foolish and can't remember everything I changed. Ever since then, whenever I close my laptop and open it again, I get a blank ...
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2answers
175 views

How to check if Ubuntu has booted in UEFI mode?

I have installed Ubuntu 18.04 (Bionic Beaver) on my PC in dual boot with Windows 10. I need to check if Ubuntu is booting in UEFI mode or legacy mode. I found a few sources online to check ...
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0answers
16 views

Undo bcdedit set from uefi or ubuntu

I'm trying to install ubuntu in dual boot along with windows 10. I have two hard disks. Windows is already installed in disk0. Then I installed ubuntu 18.04 LTS in disk0 after windows. Both were ...
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1answer
86 views

How to install Ubuntu 18.04 on a Legion y530 laptop with UEFI

Update 2 I have followed the given instructions in the next three screens: 1st screen: GNU GRUB version 2.02-2ubuntu8.9 setparams 'Check disc for defects' set gfxpayload=keep ...
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0answers
26 views

Dual Boot: GRUB Loads but no Ubuntu

I have recently built a new PC on which I am trying to dual boot windows 10 and Ubuntu 18. First I installed Windows 10 (on UEFI) on my SSD which I gave GPT partition tabling, then resized the main ...
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0answers
65 views

How to create an UEFI-only bootable ISO image?

I want to create an ISO image that boots ONLY on UEFI environments. I've managed to create images that boot on BIOS systems, but I can't figure out how to create an image that works only on UEFI. I'...
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1answer
20 views

Ubuntu 18.04 Server UEFI Enable Plymouth

So I "converted" Bionic Server UEFI to Mate Desktop UEFI. One thing that bugs me though is that I cannot seem to enable plymouth. this is what alternatives is set to: There are 2 choices for the ...
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0answers
25 views

Ubuntu update made machine unbootable

I have upgraded my ubuntu to latest (18.04) on a dual boot HP Pavilion. The windows 10 partition has been unbootable for some time and now both partitions are unbootable. After the ubuntu upgrade ...
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0answers
8 views

Preseeding No physical volume defined in volume group

A couple of weeks ago I asked about configuring Ubuntu preseed to configure LVM partitions. I got no response to that one. I was able to figure out how to get logical volumes defined for UEFI within ...
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0answers
61 views

Unable to boot consistently

I recently bought a HP Pavilion desktop computer, which came with a HDD with Windows 10 in it. I installed a second drive (NVME SSD) where I installed ubuntu MATE 18.04, installing grub in this drive ...
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1answer
20 views

Problem with dual boot Windows - Kubuntu 18.04

I have installed Kubuntu over another distro in a system with dual boot Windows / Kubuntu , and now Kubuntu starts directly with no grub for dual boot. I had to install it in EFI because installer ...
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0answers
25 views

Windows 10 error booting after Ubuntu Install

I have just installed Ubuntu 18.04. During the boot, "Windows UEFI" appear while I hit ESC, but when I choose this option here is what I get : error : no such device: /EFI/Microsoft/Boot/bootmgfw....
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0answers
28 views

Booting Ubuntu installed on SSD on both Windows and Mac

I've been struggling for a bit on this. I've installed Ubuntu on my external SSD with the following Partition: 200MB EFI boot partition 1GB ext2, mount to /boot Swap Ext4 I did the installation from ...
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2answers
87 views

Dual booting windows 10 and Kubuntu 18.10 doesn't install the grub menu

I just bought a new Dell XPS 15 9570. It comes stock with the new Windows 10. But as I'm a developer I want to use windows for misc. tasks and a linux distro for developing stuff. So I came to the ...
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2answers
78 views

Should I choose primary or logical, when I use UEFI + GPT to install Ubuntu 16.04 with custom partition?

when I install Ubuntu 16.04 with UEFI+ GPT, I feel uncertain! Why I don't select default install? Because it's stupid. When I create a EFI partition, should I select primary or logic? When I create ...
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1answer
28 views

Problem booting from external SSD because Lenovo laptop not allowing dual-boot into anything other than Windows

I am trying to dual-boot Ubuntu 18.04 from an external SSD from my Lenovo Flex 5. I have already got it working on my desktop but it seems Lenovo restricts booting into anything but Windows, and I ...
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0answers
22 views

Slow Ubuntu 18.04 boot time (after BIOS post)

I have 18.04.1 LTS Ubuntu installed, and I have been experiencing relatively slow boot times (30s) considering that I have a fast SSD (860 EVO). I have disabled secure boot. To see what processes are ...
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1answer
58 views

Modify boot option name in BIOS

context: uefi, GRUB, BIOS I have a Pavilion Power CB015 laptop. I want to modify the BIOS boot option label. Currently I have a windows 10 on the first hard drive (sda) and an Ubuntu 18 on the second ...
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1answer
21 views

ubuntu 18.10 fails to boot

I spent many long hours trying to install Ubuntu 18.10 on AsRock computer. It installs fine even on a Intel NVME ssd that the motherboard's UEFI utility can not use as a boot device. The problem is ...
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0answers
48 views

Couldn't get size, couldn't get UEFI db list

i have spent 3 hours. I have disabled boot security. I have read all forums. There is no any solution, please help. Ubuntu version 18.04. It's started after freeze. Postman was freezed. Cursor was ...
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1answer
30 views

Can't find my bootable USB as an option in the UEFI options [duplicate]

I'm using a Dell laptop with Ubuntu 16.04 LTS. I tried to make a bootable USB after downloading the Windows 10 ISO file, but it doesn't appear as an option in the UEFI bootable screen. I didn't use ...
1
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1answer
21 views

Ubuntu won't boot after installation on second hard drive?

I've seen variants of this question on here, but so far none of the solutions I tried have worked. I have an SSD with Windows on it, and an unallocated HDD that I want to run Ubuntu on. The windows ...
0
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1answer
25 views

Problem with Ubuntu Server USB Install

I am currently using a hardware running on Intel E7400 processor bought second hand and previously installed with Windows XP Pro which is unable to be booted as there was OS error. Which I found out ...
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0answers
26 views

Grub rescue error: Installed Ubuntu in Legacy alongside Windows10 in UEFI

Sorry for asking an already asked question, but I couldn't find anything that solved my problem. I did an extensive research on the internet (many users had similar problems) still I'm not able to fix ...
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2answers
228 views

Help: Can someone please explain the “Something else” set-up during installation like I'm 3 years old?

I'm a huge fan of Ubuntu, and I have been using it as my main OS for about 2 years now. I never had any issues with it until now when I have to dual boot (work requirement) with Windows. I followed a ...
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0answers
20 views

No GNU-grub loader page after ubuntu 18.04 install [duplicate]

I am trying to make my HP 14-B12TX dual boot. As per forums and EasyBCD help I disabled secure boot and enabled legacy support. Then Ubuntu installation goes till the end but when I restart it ...
0
votes
1answer
38 views

Ubuntu Desktop 18.10 UEFI not booting - cannot install

Neither live CD nor USB image does boot in UEFI on my system. Black screen, that is all, no grub-efi does show up. So, not even coming close to the point to install or reinstall. With 18.04 UEFI ist ...
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0answers
29 views

efi partition recovery - help needed

I had some issue with installing a dual boot setup, and i seem to have accidentally reset my efi parition with the "disks" tool on ubuntu live. Now my whole disk shows up as black unpartitioned space. ...
0
votes
1answer
147 views

How Do I Dual boot Windows After Ubuntu in Legacy mode GPT paritition Table?

Number Start End Size Type File system Flags 1 1049kB 370GB 370GB primary ext4 boot 3 370GB 496GB 126GB primary ntfs 2 496GB 500GB 4198MB ...
2
votes
1answer
28 views

Can I install Ubuntu in uefi if I installed windows 10 in legacy?

I'm new to Linux and want to install Ubuntu in uefi mode (no dual mode). However I had windows currently installed in legacy mode. So will I encounter any problem if I switch boot mode to uefi? I don'...
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0answers
66 views

18.04 hibernate with UEFI and secure boot enabled

"sudo systemctl start hibernate.target" worked fine with 16.04 on a Acer B117 using legacy boot; Updating to 18.04 forced me to use UEFI and (Acer requirement) secure boot enabled. Suspend still works,...
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1answer
91 views

Installing VirtualBox “Your system has UEFI Secure Boot enabled.” message

I'm trying to install VirtualBox on Ubuntu 18.04 in a dual-boot system with Windows 10 on the other drive partition, my system uses a UEFI partition to boot up. Upon installation the following ...
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1answer
31 views

Ubuntu 18.04 LTS Why are kernels installed on /boot and not /boot/efi?

This is more of a knowledge based question. I came upon it because for the longest time I have been getting an out of disk space error in the /boot partition when I try to update my computer. And ...
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0answers
104 views

Problem Loading UEFI:db X.509 certificate (-65) and Unable to find a medium containing a live file system

I'm currently trying to install Ubuntu 18.04.1 using a USB drive with Etcher. My laptop is the Lenovo Legion Y720. I proceeded to disable secure boot and when I clicked try Ubuntu. The error messages ...
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0answers
36 views

Ubuntu 18.04 w/MAAS on KVM, KVM nodes on UEFI cannot boot

I have just started using MAAS and testing on a KVM environment with isolated virtual network connected through NAT to the outside Internet. MAAS installed fine in a KVM VM and I am able to ...
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0answers
17 views

Triple Booting (Windows7,Ubuntu & Phoneix OS) in BIOS

I'm trying to Triple-boot Windows 7, Ubuntu and Phoenix OS in a single HDD. I successfully installed all three Operating Systems. Then I configured GRUB using the Boot-Repair tool from Ubuntu ...
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2answers
123 views

How can I boot an Ubuntu 18 live USB from GRUB? [closed]

I have Ubuntu 18 and Windows 10 installed in dual boot on my machine. I now have to do some tuning on the disk partitions and wanted to do it with the gparted available directly on the Ubuntu live ...
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0answers
68 views

Old noob corrupted his dual boot, (bios legacy boot?). Any suggestions?

I have an old Aspire E1-470P which I had upgraded through Win10. It was getting bogged down so I months ago set up a dual boot in Ubuntu 18.04 with limited disk space partition. I may have deleted my ...
0
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1answer
130 views

Unable to find a medium containing live file system: USB ports shutdown during Ubuntu install

I'm currently trying to do a fresh install of Ubuntu 18.04 LTS from a USB 2.0 on a new Windows 10 machine (want to replace the OS). The main issue I'm encountering is that during install, eventually I ...
1
vote
1answer
34 views

Corrupted VirtualBox install preventing usage of dpkg

I attempted to install VirtualBox but remembered half way through that the last time I did this it failed when doing something with UEFI Secure Boot and I wasn't able to boot to Ubuntu after ...
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0answers
27 views

Grub won't find ubuntu after SD card installation on a UEFI compute stick

I have an intel compute stick that I'd like to dual boot Windows 10 and Xubuntu 18.04LTS. I installed Xubuntu onto an inserted SD card. It installed fine, but when trying to boot, i am met with: ...
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0answers
54 views

How to add Windows XP to GRUB2 menu

I have a Dell Dimension 5150 with a Pentium D 820 (I know it's outdated but I received this from a friend as a Christmas gift.) I have 2 hard disks in this desktop: A 500GB 2.5' laptop HDD with ...
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0answers
131 views

Problem with grub-install when installing Ubuntu 18.04

I had a working install of Kubuntu 18.04 and tried to install Lubuntu 18.10 on another partition (something I've done successfully before, when transitioning from Ubuntu to Kubuntu about a year ago). ...
0
votes
1answer
53 views

Ubuntu installed on second Harddrive, in UEFI it does not exist

The Title says most of it, but I elaborate anyway. Today I had my 4. or 5. attempt to install Ubuntu on my PC, as Dual Boot to Windows 7. The Installation was successful, and when looking at Ubuntus ...
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0answers
72 views

Multi boot issue. Boot Order not found, and failed to set MokListRT

Here’s my situation. I have an early 2015 MacBook Air, on which I frequently dual boot from external drives. I tried to install kali linux on an external drive, something went wrong, and now when I ...
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1answer
20 views

Failed installation prevents further installation

I was in the process of installing Ubuntu 18.04 on my laptop when the screen timed out. Moving the mouse and using the keyboard would not bring back the screen, and after a couple hours I was forced ...
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0answers
22 views

Boot From External USB HDD

I changed my old HDD with a new SSD. Inside my old HDD are installed Windows and Ubuntu. At the moment, I need to use sometimes my old HDD, in particular the ubuntu operating system (connecting the ...
0
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1answer
116 views

How to disable secure boot on acer aspire 5 running ubuntu 18.04.1

I can't disable the secure boot option on my acer laptop. It is greyed out. The boot mode is also set to UEFI which I cannot change as it is the only option. The laptop model is aspire 5 a515-52g-591j....
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0answers
114 views

How to install Ubuntu 18.10 to an UEFI system with Windows 10

I did a lot of search but things looked very complex, I just cannot believe it will be such difficult. So I think some tutorial may be written long time ago and thing could already became easier. To ...