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Questions tagged [bootloader]

A bootloader is a program that loads and launches a program or an operating system from boot.

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“Ghost” blank UEFI entry in Gigabyte BIOS

Background I was trying to install macOS (Hackintosh) alongside Microsoft Windows 10 on my SSD, so I shrank the Windows partition using Disk Management and left an empty exFAT partition next to C: (...
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Windows 10 stuck in diagnostics loop

Laptop : Sony vaio Model number : SVF152125NB Running O.S : dual boot (Windows 10 and Ubuntu) After the last update (probably at June 2018, I don't remember the exact update name/ID) from Windows, my ...
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Installing Windows 10 with bootloader on a different disk?

I'm trying to install Windows 10 on a brand new NVMe disk, but I just found out my motherboard can't boot from these (but windows sees it natively in the installer and installs just file), however, I ...
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42 views

Is it possible to install bootloaders on respective partitions?

I have Win10 on my laptop right now, but I would really rather switch back to Linux and just keep Win10 for games (especially since MS can't put out a decent update anymore it seems). I installed ...
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25 views

Moving Windows partition (EFI, GPT)

Suppose I have a computer that was once a purely Windows desktop, whose disk contained at least the usual EFI System Partition (the ESP) and the Windows partition itself. Suppose that one day I ...
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35 views

Run script after apt-get updates grub

I use Debian 9 on an EFI system with a custom grub image and configuration file in order to make Secure Boot work. However, whenever apt-get updates Grub my customizations get overriden. What is the ...
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Boot External Drive (Windows 10) without disabling Secure Boot in bootloader

After lots of time and effort, I was successfully able to install Windows 10 on to an external drive, and I can now boot it and use it as I would a regular computer. I just need to go to the boot ...
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40 views

BCDedit /store BCD /set {default} System cannot find file specified

A friend of mine recently had one of his bootloader files corrupted on his Windows 10 machine. We've tried several times to rebuild the BCD on the EFI partition using bootrec and bcdboot, but neither ...
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37 views

Install Linux on second hard drive (DUAL BOOT)

I want to install linux Mint on my second hard drive (1st: Windows 10). I made 3 partitions: root, home and swap and installed it. However it doesn't boot into Linux and I get this error message: "...
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20 views

How can I bypass Samsung Book2's bootloader?

I was curious if the Samsung Book2 (ARM) had a bootloader to prevent dual-booting another OS? If so how could I bypass it? Is it managed by windows-on-arm or by the BIOS?
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52 views

Computer with Kali Linux, trying to wipe and install Windows, can't boot to Windows install media

I have installed Kali Linux because i want to learn some of the cyber security related things but now i wanted to go back to my Windows. As i had not much more knowledge about dual boot of system so i ...
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1answer
147 views

Boot NVME SSD from USB key

tl;dr - How to boot an Ubuntu Server installation from an USB key? I am trying to boot an Ubuntu Server 18.04 LTS installation on a server that doesn't allow booting from a NVMe drive. Since the ...
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Samsung Drivers Won't Work When in Fastboot Mode

I have made the mistake of trying to root my phone. Which is fine, but it's a lot more complicated than I thought it was, but since I have asperger's, once I start something, I feel like I have to ...
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How to prevent Windows from 10 making its bootloader the default and skipping rEFInd

I have an Alienware X51 R3 to dual boot Linux and Windows 10. I use refind as my boot manager, but Windows keeps skipping it and booting directly to Windows 10. I've been having this problem for years,...
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Is it possible to install Windows 10 to a larger drive while putting the boot loader and hibernation file on a different, smaller, faster drive?

I am working on a new desktop build and am trying to maximize both performance and stability. I have a RAID 5 array for my system volume that will have Windows installed on it and my data. I have a ...
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1answer
65 views

Dual boot with offline disks

I have a setup with 2 Windows installations in the same machine (different physical disks) and I'm keeping them separated, meaning that each installation has the other one's disk as "offline". This ...
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Installing rEFInd on Windows 7

ALL, I'm trying to follow an instruction here to install rEFInd on top of my Windows 7 laptop. Problem is - step 2 fail because apparently mountvol on Windows 7 does not have an option "/S". I tried ...
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1answer
71 views

Running U-boot standalone API's in spicific core

I am working on Imx6 sabre SD free-scale board, we have u-boot compiled for the board also running an standalone API's(simple hello_world program) from u-boot. But now I want to load & run this ...
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3answers
47 views

How to add an already installed Linux to Windows boot loader?

Is there anyway to add an already installed Linux(preferably Kali Linux) to windows boot loader? I had both Windows and Kali working fine using GRUB boot loader. After my windows got corrupted and I ...
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210 views

How to boot a bootable .bin file from a CD/DVD?

I have written a bootable program in assembly and compiled it into a .bin file. This is a Boot sector program which works well in Virtual box where I have to manually put the program in the offset ...
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1answer
37 views

Laptop only boots to grub> command shell

I've managed to semi-brick a laptop by using it to install Xubuntu to an external drive. The laptop is a Toshiba Satellite NB10t-A-10F. Any help would be greatly appreciated. How I got here: I told ...
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2answers
93 views

USB drive bootloader that redirects the boot process to an ISO image

I'd like to have a bootable USB drive that contains a boot loader that can prompt to select an ISO image to continue booting from. In this question I've already provided an answer containing a tool ...
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PC only boot the “Choose an option” Screen

Problem: Windows boot to "Choose an option" Screen with the options: 1. Continue - Exit and continue to windows 2. Use a device 3. TroubleShoot 4. Turn off your PC I performed a clean windows 10 ...
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1answer
376 views

How to safely set, change, remove values of EFI variables

After spending hours debugging a problem where systemd-boot started skipping its boot menu and in general ignoring its configuration file /loader/loader.conf (on the EFI partition), I've discovered ...
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414 views

GRUB for RaspberryPi 3 with raspbian

Is it possible to boot Raspbian on RPi3 with Grub? I have managed to load grub on RPi3, but I cannot load Raspbian by Grub. What do I wrong? Or is it possible that GRUB does not support Raspbian? ...
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1answer
159 views

Trying to repair Windows 10 bootloader

I'm having a nearly identical issue to the one described in this post. I'd expect the solution would work perfectly, however, I can't create the efi partition on the drive with Windows installed as ...
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Dual or multi boot to a pre-installed/existing windows 7 on another drive without fresh install

I have a laptop that has working Windows 7 64-bit Enterprise edition on Drive0 which is an HDD. I have switched this HDD from Drive0 into Drive1 and plugged a new SSD into Drive0. I then install a ...
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Using rEFInd to execute real mode boot loaders

I am interested in making my own operating system. To start, I am going to try it out inside a virtual machine. In the future, I would like to run it physically. This is the tutorial I am following ...
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33 views

How do we prepare sd card for boot

I have a uboot.img and a uImage prepared for an nxp board. I want to understand how can I make u-boot to load kernel. So I understand that there is an address on sd card from where the kernel image ...
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rEFInd's EFI file removed but computer still boots on

I'm on multiboot (Ubuntu/LUKS, Win7/VeraCrypt, Win7 unencrypted) and I installed rEFind to tinker few boot things I slightly broke. I nearly made my stuff and now I want to remove it (or at least make ...
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2answers
2k views

Grub rescue says all partitions have 'Filesystem is unknown'

I have simple Windows 10 and Ubuntu installation. My latest Windows update just messed with my GRUB boot loader somehow. Every other answer mentions to type a few set boot and set prefix However ...
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1answer
91 views

Install grub2 on another partition from Windows

I want to install grub2 on my secondary Windows partition and chainload from primary Windows boot loader with dd. I can specify disk with //./PHYSICALDRIVE0. But how can I specify the partition?
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117 views

Windows 10 loader shows but doesn't work

I had Windows 10, then I installed Ubuntu 16.04. And from Ubuntu I tried: `update grub` `update-grub2` And it found the Windows 10 loader and I see it in grub. But when I select it it goes to a ...
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226 views

Windows 10 boot corruption

I have an Asus laptop with Win10 installed. I previously had a distro of Linux installed with its own GRUB. Today, I decided to change the Linux distro, but I first checked whether Win10 UEFI was ...
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38 views

Dual booting configuration

I am trying to run dual configuration on my PC. I have Windows 10 installed on SSD and I installed Linux on HDD. When Installing Linux Ubuntu I created boot partition which is visible by Windows (disk ...
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1answer
1k views

“Boot error” when booting YUMI USB flash drive

I created my YUMI USB flash drive some time ago. I’ve used this drive to boot various PC’s successfully (so other situation than in an existing question). However, when I tried to boot my laptop ...
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1answer
2k views

Booting NVMe drive with a bootloader

I'd like to use an NVMe drive paired with a PCIe adapter as main system disk. Unfortunately, I have a mainboard (X79) whose BIOS does not support booting NVMe drives. I was wondering if I can install ...
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1answer
516 views

how to create a bootable Mac OS usb stick from mac.iso on a unix shell?

My mac filesystem is so broke that i can't even enter recovery mode. I am now on a linux live system and have InstallESDDmg.pkg which I could extract with 7z. I could also use dmg2img to create an iso ...
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70 views

Manually GRUB reconfiguration

I installed Windows 10 and Debian on the same computer. Windows 10 was before encrypted by VeraCrypt, however GRUB create entry in boot menu only for Windows Bootloader, so I should add manually ...
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0answers
70 views

Windows 10 / Linux dualboot on GPT-table without (!) UEFI - maybe another approach possible?

Would the following sequence work to run Windows on a GPT partition table without (!) using UEFI-boot? Install Windows the classic way in Legacy-BIOS mode onto a usual MSDOS type partition table Boot ...
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0answers
27 views

External Disk is not visible after some undefined changes with Zadig Bootloader

Would be nice if someone can help. Erasing the driver and starting new did not help to solve the topic. I think i have changed something with Zadig Bootloader. I tried to conect another USB device ...
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0answers
46 views

Is there any universal VHD boot loader?

Windows Boot Loader has ability to boot a VHD file which contain a Windows installation. However if it is Linux distribution or FreeBSD distribution, it would not work. Hence is there any boot ...
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1answer
140 views

What have windows boot manager done during booting Windows From VHDX file? (is about Principle not Configure step)

When Windows 7 released, a feature of Windows Boot Manager also came out. It is Native boot. However there is a magic point which make me confused. When Windows Boot Manager is working, we can assume ...
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0answers
19 views

How do i convert my pc from MBR to UEFI [duplicate]

I am running windows 10. I want to duel boot Android-x86 and Ubuntu mate. When installing mate, I was told that i was using MBR. I didnt think much of it until I went to the partition table where my ...
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2answers
1k views

Choose to boot into linux from Windows 10 (dual boot without bootloader)

Given that I have installed both Windows 10 (primary) and Linux (secondary) in my disk, is there a way to boot into Linux by option inside Windows 10, maybe using 3rd party software? I want to use ...
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79 views

How can I recreate the efi boot loader of a Bootcamp installation?

I was updating my Bootcamp windows 10 (which was running in Parallels Desktop). Something happened apparently (I don't know what), and when I later started the Bootcamp Windows from Parallels, its ...
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What validation does Windows 10 bootloader perform on the ESP

I can boot Windows 10 by running EFI\Microsoft\Boot\bootmgfw.efi on the ESP (2nd hard disk partition). However, if I copy the EFI folder to a 100 MiB FAT32 file system on another disk and attempt to ...
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21 views

Intermittent Inaccessible hard drive

am trying to diagnose an issue. Client provide device erroring with cant find hal.dll. This isn't the issue that i have a problem with but where the investigation started. Also needed to retain data ...
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1answer
3k views

Remove ASUS ROG UEFI boot branding from laptop

I was asked to purchase a laptop with a 17" screen for a customer who owns a restaurant, so I bought an ASUS ROG G750JM. It's a very capable laptop and has nice features and build quality. However, ...
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5answers
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Is safe to hide piece of paper with bios password on it inside notebook? [closed]

If someone stole my notebook they try to reinstall system and delete all of my work. I want to lock bootloader with password but i'm afraid of forgetting it myself. I like to know if is safe to hide ...