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Questions tagged [uefi]

Questions about the Unified Extensible Firmware Interface (UEFI), the software interface aiming to replace typical BIOSes. This tag may also be used for questions related to UEFI partitions and systems.

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1answer
114 views

OpenWrt UEFI boot extremely slow?

I tried to install a thrid-party OpenWrt image to a computer. After writing the image file to SSD and start booting, the kernel message prints at a really slow pace, although some of the timestamp ...
2
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0answers
222 views

Can't boot Ubuntu 19.04 or Ubuntu19.04 LiveUSB after enrolling MOK [closed]

(I've asked this question on AskUbuntu with no response after 4 days.) Before showing GRUB, it shows Unable to trigger tcg2 final events table: Invalid Parameter Something has gone seriously ...
-2
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2answers
251 views

Kali Linux installation on USB drive

I want to install Kali Linux on a 64 GB USB drive and want to take it just anywhere and plug it in any PC and have my setup up and running. IOW I just want a HDD like complete Kali Linux portable ...
0
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1answer
37 views

Disadvantages of ESP mounted on /boot? Performance impact?

I've always had /boot on the OS partition but thinking of mounting ESP at /boot to use EFISTUB and boot directly into the kernel from UEFI. The ESP would be using FAT32 (obviously). vmlinuz-linux, ...
0
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0answers
42 views

Fedora30 installed on USB pendrive, seems to took control over my BIOS-UEFI

Notebook Ultrabook Samsung NP530U3C this notebook was working just fine, booting normally, and with the UEFI/BIOS (A Phoenix one) with no problems. Every time I wanted to enter the bios setup, I ...
0
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0answers
110 views

systemd-boot point to bootx64.efi (from Windows DVD ISO)

I've "burned" (extracted) the Windows 10 installation iso file to a partition on my USB flash drive (part4). USB/Part1 (EFI) holds systemd-boot. I can boot into Windows if I from the my UEFI system "...
0
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1answer
793 views

How to recover grub with LUKS encrypted LVM partitions after motherboard replaced?

I had dualboot Windows 10 and Kali Linux x64 (Linux distribution based on Debian 9 x64) on my Lenovo X280 notebook with EFI bios. Windows 10 uses BitLocker with password (not TPM). Linux uses LUKS ...
0
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0answers
131 views

boot into FreeNAS using 32bit EFI (not BIOS)

Background: Hardware: MacPro 2006 (has 32bit EFI and can emulate BIOS aka Legacy) 32GB RAM 2 x QuadCore Xeon CPUs (upgraded) 6 x SATA ports 2 x PATA ports Anytime the Mac boots using Legacy, ...
2
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0answers
61 views

Slax 9: can't boot from FAT32 partition created via UNetBootIn because of UEFI on cheap laptop

I have this budget (read: cheapo) laptop, a Schneider SCL141-CTP, with an Intel Atom X5 Z-8350 SoC, 2 measly gigs of RAM and a ridiculously small 32GB eMMC SSD, that's running Windows 10 Home, and ...
2
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0answers
128 views

Unable to mount Mac's EFI partition from Ubuntu Live USB

I've tried to mount my mac's EFI partiton while using an ubuntu live USB, however I get the following errors: ubuntu@ubuntu:~$ sudo mount /dev/sdb2 /mnt/efi mount: /mnt/efi: /dev/sdb2 already mounted ...
1
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1answer
345 views

GRUB isn't able to boot from SD card [closed]

I recently installed Windows To Go onto my SD card, which is working fine (when e.g. booting from it using a SD-USB-adapter). Unfortunately my Notebook (Medion Akoya E4253) is not able to boot from it ...
3
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4answers
96 views

Linux distribution for USB that works on 32/64 and on Mac [closed]

I'm looking for a Linux distribution that I can run from USB that works on almost every computer that I will encounter. I need this because I repair computers and want to run all kinds of tools. I ...
1
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0answers
21 views

Bootloaders triple windows fedora kali - each bootloader loads it's host OS and windows, not the other linux

I'm having issues with the kernel loading when trying to multiboot. I had previously fixed a similar issue but following a fresh Kali install (and it's attendant automatic reinstall of grub) I've ...
0
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1answer
200 views

windows installation error for EFI partition to be NTFS

I have on laptop freebsd, fedora, endless and was trying to put windows. But, windows installation fails with error that EFI partition is NTFS and needs to be FAT32. It actually is FAT32. Some search ...
1
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0answers
64 views

unable to create a bootable USB Debian Stretch disk using LVM with GPT partitions

I'm stuck for several days whith a issue when I try to create a bootable USB disk GPT partitonned. I would like this disk to be like a bootable "backup" disk for my live system. (In fact the system ...
0
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0answers
77 views

32 bit CentOS bootable USB drive is not detected in UEFI mode

I am trying to install CentOS on my intel compute stick which has 32 bit architecture using Intel Atom Processor. (Intel compute stick CS125 with 32 Bit Atom processor) The link to kernel is here: ...
0
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1answer
2k views

Pop OS dual boot with Windows 10

I have a Lenovo ThinkPad (UEFI enabled) with Windows 10. I just have one hard disk. I am trying to install PopOs and have a dual boot option. This link from PopOs has description regarding dual-boot ...
-1
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1answer
60 views

How to simultaneously dual-boot >>several<< slackware versions along with windows on a uefi/gpt box?

Back in 2015, I got an Asus VivoPC-VM62N with Windows preinstalled. I ran gparted (gnu partition editor) on it, shrank the Windows partition, and used the freed-up space for several linux partitions ...
0
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0answers
88 views

Error while booting up PC ( Runtime error: Error 0x40007)

An error shows up when I boot up the PC, after a while the PC starts with the normal GRUB. This is the error message: Starting UEFI Loader (x64)(v.1.1.42)... Runtime error: Error 0x40007: Error ...
1
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1answer
108 views

Linux boots fine if I manually choose the drive in the bios. If I let my computer boot normally, Linux isn't found

I have an intel i5 2400 cpu and this Intel DQ67SW desktop motherboard. The PC had Windows installed, booting to Windows automatically OK. With Linux installed, nothing is booted and I get a message ...
1
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2answers
3k views

Can't boot to windows after installing Ubuntu in UEFI

I'm trying to install an Ubuntu dual boot on my windows 10 laptop. Windows 10 used the legacy BIOS setting. When I start the Ubuntu installation I get a warning about BIOS and UEFI, other operating ...
0
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0answers
242 views

Luks UEFI Boot not asking for password?

I've setup an encrypted UEFI-Booting Arch installation1. Why am I not asked for the phrase on booting? Remark: If I change the name crypto in `/etc/crypttab` to e.g. encryptedBOOT I am required to ...
1
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4answers
81 views

UEFI-installed Debian on a pendrive doesn't want to boot after being removed once

I read here, once, that installing a Debian 9 on a pendrive (well, in my case it's a SDCard adapter) directly would work, and it did. The problem came up, though, after i unplugged the adapter from ...
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0answers
45 views

Fedora UEFI Dual boot breaks NVIDIA in Windows

I'm having a problem regarding nvidia drivers and a dual boot system on uefi. I installed fedora on UEFI mode, so grub boots on an EFI partition(/dev/sda3) which then allows to boot Windows Boot ...
0
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0answers
81 views

Can I move any partition freely when using UEFI?

In BIOS, booting is two or three stages, both of which will end up calling the final-stage bootloader code in the boot block of a partition. Is that the reason why I need to reinstall GRUB2 when ...
0
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0answers
39 views

Cannot manage to restore Dual Boot after reinstalling ubuntu

I have a Dell Latitude 3590 with Windows 10 installed as factory setting. I previously installed ubuntu 18.04.2-desktop with an iso image on a usb drive with dual boot allowing me to choose between ...
0
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1answer
335 views

Is UEFI a bootloader as well as a replacement of BIOS?

Does this laptop with Lubuntu 18.04 have a bootloader installed and use it? If not, what does it use instead? What is its booting process like? Does the laptop use UEFI instead of BIOS? Is UEFI a ...
1
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1answer
124 views

Installation and booting scenarios for combinations of boot sector (GPT or MBR), firmware (BIOS or UEFI)?

I think all the confusions in this post come from coexistence of old and new technologies and abuse of terminology such as mentioned in https://en.wikipedia.org/wiki/...
1
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3answers
506 views

How install legacy grub to gpt uefi disk?

I have new computer with UEFI. I formated the disc as GPT (not MBR), made few small partions on start (as placeholders for UEFI, for boot, for swap etc ...) then larger partition for system / (and ...
-1
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1answer
490 views

Am I able to install Arch Linux with the 100MB EFI partition that Windows 10 had already created on installation?

I want to dual-boot Arch Linux alongside Windows 10, which is already installed. I am using UEFI-GPT. On Windows 10 installation, it creates an EFI system partition as required by UEFI. This ...
1
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0answers
98 views

Creating an ISO that a macbook can boot from

Trying to repack an ISO with a preseed file to automate installation. I have done this with a dozen laptops and works great. Until I ran into a macbook, where it does not work. Originally repacking ...
2
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0answers
147 views

how is the boot directory of the EFI/ESP partition related to the boot directory of the root partition?

are the files inside these 2 directories mirror images of each other? how are they related? for example the below command that i execute: sudo cp -a initramfs-4.18.16-300.fc29.x86_64.img /boot/EFI/...
3
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0answers
176 views

kexec: relocate_kernel fails

I am not able to get kexec to work. For x86_64 relocate_kernel fails to store information for jumping back. Kexec stops in movq %r9, CP_PA_TABLE_PAGE(%r11). works fine for kernel 4.4.162, doesn't ...
0
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1answer
519 views

Clonezilla clone linux partition MBR based and restore to UEFI based system

I have a xubuntu partition on my actual laptop with MBR and grub for dual boot windows and Linux. I'm trying to clone the xubuntu partition and restore into a new laptop that is UEFI based. In the ...
4
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0answers
42 views

uefi bootloaders for distributions

I have stared reading about uefi recently and got to know that SYSLINUX and GRUB2 have their own uefi bootloader. i have few confusions specially in terms of pxe boot. 1) Are distributions use their ...
-1
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1answer
664 views

Debian 9 and UEFI

I have installed Debian Stretch (9.6) on UEFI-based platform Everything went fine, but I cannot... boot to the system. After the GRUB2 starts the image all I get is: Loading Linux 4.9.0-8-amd64 ...
1
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1answer
649 views

GRUB does not load in Windows10+Linux with UEFI

I have a new computer that comes with UEFI but I'm unable to use Windows 10 and Linux in dual boot, after installation of Linux+GRUB and reboot it loads Windows without showing GRUB, notice that first ...
2
votes
1answer
670 views

Can't boot on Win10 with dual-boot Fedora 29 + Win10 (both encrypted partitions)

Did install Fedora 29 on a different partition than Win10, usual dual boot configuration that I already used a good number of times. The new parameter is that I use encryption on Windows system (...
1
vote
1answer
130 views

Multiple Linux Installation - managing shared ESP and Bootable options

I have installed Manjaro alongside BlackArch. BlackArch has its bootloader in /boot which is a separate partition. Manjaro has three partitions, one for root(/), one for /boot, and one for /boot/efi. ...
3
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1answer
85 views

Dual boot ignores EFI devices

My pc does not boot anymore in EFI/UEFI mode. I had grub installed and was able to boot on both Windows 10 and Ubuntu Linux (14.04 LTS). I recently tried to install Fedora Workstation 29 '...
0
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0answers
387 views

boot/grub/efi.img invalid image size

I am attempting to create a custom Ubuntu 16.04 LTS Server installation media and have been following the instruction here https://help.ubuntu.com/community/InstallCDCustomization When I attempt to ...
0
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1answer
336 views

grub2 no such device (Win10 / Fedora)

I have Win10 installed on a nvme drive. I have installed Fedora 29 on another ssd with LVM. When grub boots, it shows Fedora & Windows 10 on the list, as it should. But starting with Windows ...
2
votes
0answers
650 views

Deepin Installer won't start - stuck on black screen with single dash

I have just bought an Asus Zenbook UX433FA, on which I want to install Deepin 15.8 as my only OS. I have followed the installation guide on the Deepin website, therefore creating a bootable USB device ...
3
votes
1answer
63 views

Clone Debian installation

I want to clone an existing Debian installation and restore on a new machine with a hard drive of different size. The partioning is very easy - /dev/sda1 for EFI, /dev/sda2 for Linux and /dev/sda3 ...
0
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2answers
1k views

No boot option after Linux Mint installation (dual boot)

I recently installed Linux Mint 19 onto my Dell XPS 15 laptop with Windows 10 pre-installed. The initial install of Mint seemed to go fine. I booted off of a live USB and installed Mint onto a ...
-1
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1answer
107 views

How can I mount a partition before the OS has booted?

In the instructions for configuring an EFI system partition in Arch Linux, it reads as follows: mount ESP to /boot. This is the preferred method when directly booting a EFISTUB kernel from UEFI. ...
3
votes
0answers
178 views

FreeBSD 11.2: how to resize the boot options menu on a UEFI/GPT/ZFS machine?

Is there a way to resize the boot options menu in Freebsd 11.2 on a UEFI/GPT/ZFS machine (zfs-on-root)? On multiple machines, the installation resulted in the boot options menu being rendered in a ...
0
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0answers
149 views

UEFI Stub booting not working

I am trying to boot Arch Linux via an EFI Stub. I created an EFI partition (formatted as FAT32), a swap partition and a main partition on which I installed the Arch Linux core package group. I then ...
0
votes
1answer
58 views

Swapping hard drives results in being unable to boot

I have a laptop that I installed Arch on, so far so good. After getting things set up just the way I wanted them and using it for a few days, I decided to experiment a little and install SteamOS. ...
0
votes
1answer
991 views

What is causing my EFI partition to become corrupt when booting CentOS after installation?

I am attempting to install the latest CentOS 7.5 x64 on small form factor PC ASUS Eee Box EB1037. It is an Intel Celeron J1900 (Bay Trail) with an onboard NVIDIA GeForce GT 820M. The installtion media ...