Questions tagged [bootloader]

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

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How does BIOS or any other firmware communicate with a storage device in order to achieve the first-stage boot loader goals?

When booting, the firmware in BIOS-CMOS needs to recognize which volume has a boot loader to things effectively starting to become highly operationals. But, at this stage, I think, there is no driver, ...
Daniel Bandeira's user avatar
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1 answer
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Reg safe boot mode in windows 10 [closed]

I just recently stuck with safe boot login window.I entered into safe via msconfig win win10,after restart, it enters into safe mode. I'm using 4 digit pin for user login password,and I'm the admin. ...
Aashiq's user avatar
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7 votes
1 answer
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How to boot Windows from Clover UEFI shell

How to boot Windows from Clover UEFI shell. I don't have access to anything but it. When I normally boot it gives error : unknown file system entering rescue mode grub rescue>_ May be that's ...
MrVajid's user avatar
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729 views

Fix unknown file system grub rescue> error

When I boot normally, after the bios screen it shows error : unknown file system entering rescue mode... grub rescue>_ I think it's because, I deleted the Linux(which I used to dual boot) ...
MrVajid's user avatar
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Boot Linux Ubuntu using Windows Boot Manager in Legacy mode, is this possible?

It might sound a noob question from the title, but I'm pretty new into operating systems. I have a laptop and I would like to run Ubuntu alongside Windows 7. Windows 7 is the default OS, and the ...
MaxC's user avatar
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1 answer
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Create bootable USB with boot manager to dual-boot Windows and Android x86

I tried to install Remix OS (Android x86) on my Windows 10 computer. Unfortunately it overwrote my current bootloader and now I can't boot into Windows nor the newly installed Android. What should I ...
Dominikis's user avatar
10 votes
2 answers
37k views

GRUB Bootloader with root LUKS encryption: Only grub shell

I would appreciate help and hints to solve a problem with the GRUB bootloader. I have a system with root LUKS encryption. Means that except the partition with the bootloader, the whole system is in ...
EccoB's user avatar
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1 answer
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Cannot install Windows 10 from USB stick - issue with GRUB?

I have followed the instructions here and created a bootable Windows 10 USB stick, but when I try to run the installation the system keeps booting into the GRUB 2.0 bootloader. Unfortunately, I have ...
david's user avatar
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Please help me restore windows and windows data after intervention of "Windows 7 Boot Updater" program (preferred without load drive)

Today I wanted to decorate the system(Windows 7 x64) a little. I found in the Internet that can change the animation of loading Windows by Windows 7 Boot Updater program(I downloaded it here; FOR ...
CppCat's user avatar
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11 votes
7 answers
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How do computers know which operating system to boot?

When I turn on my computer, what is the software that selects which operating system to boot, and how does it decide when given multiple options? More specifically, what if I have a computer with ...
Matthew Inbox's user avatar
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1 answer
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Dual Boot Windows/Debian no longer boot Windows. How to access cmd prompt?

I have a dual boot notebook that had Win10 and Debian installed, after using windows yesterday the debian/GRUB would no longer boot. (BTW that is still a problem, if you can help see this) While ...
Justcurious's user avatar
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Broken Windows bootloader on dual boot Windows/Arch Linux

I have 2 nvme drives one with Windows 10 and the other Arch Linux installed. I was under the impression that the 2 OSes have their bootloaders on their own disks which is not the case in retrospect. ...
n.z.'s user avatar
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0 answers
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Force u-boot out of fastboot mode

[This is a cross post from U&L SE] I've made a mistake and flashed some hardware with an incorrect version of u-boot. The hardware differs from the hardware that I built u-boot for very little, ...
Brydon Gibson's user avatar
0 votes
1 answer
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error while booting custom minimal linux distribution: unable to mount root fs

Recently I followed along an article describing how to build your own minimal linux distribution (Linuxjournal article) After many tries I finally came to the point where I put my OS on a USB drive. ...
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1 vote
0 answers
1k views

Install both BIOS and UEFI bootloaders with kickstart

I am trying to build a disk image with Koji. To do so you specify a kickstart file to be used. Since QEMU is spawning a BIOS VM, my kickstart is doing only BIOS related stuff. My issue here is that I ...
djuarez's user avatar
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Batch file to boot into grub2

I want to make a desktop shortcut on windows 10 to boot directly into grub2 using a batch file or any other way how do I do that
Fawaz Takhji's user avatar
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484 views

unable to boot porteus linux using bootloader

I have been using porteus on my card and using syslinux bootloader to boot it. I tried to install grub installer using grub.txz file as per the official porteus installation on another usb card. For ...
Mudit Shrivastava's user avatar
0 votes
1 answer
3k views

How to get legacy bios to load uefi bootloader?

I have a liveusb, it currently works on an uefi computer. I encountered more and more computers which are uefi only and which are configured to boot only from gpt with password locked bios. But in the ...
user2284570's user avatar
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Issue while installing Windows on separate drive, observed shared system and recovery partition

Issue while installing Windows on separate drive WITHOUT dual boot, shared system and recovery partition I have 2 physical drives drive 1 and drive 2. My drive 1 already has a Windows 10 (RS5/19H1) ...
user1174114's user avatar
0 votes
1 answer
1k views

how to boot from selected partition in Raspberry PI 3?

I dont have extensive knowledge about bootloaders. I have some problem about updating the image in a SD card. I have a raspberry PI and i would like to make two partitions in the SD card, so that one ...
Hsn's user avatar
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3 votes
1 answer
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How to tell Windows Boot Manager (bootmgr) to load and execute the 1st sector of a specified partition ( chainload )?

I have 2 old-style MBR partitions (non-GPT, non-EFI): An "active" partition containing Windows 7 OS and its bootmgr - the Windows Boot Manager and its BCD.. The second partition contains an exotic ...
George Robinson's user avatar
2 votes
2 answers
1k views

Do non-bootable data drives have boot sectors?

Possibly a stupid question here, but I'm wanting to confirm a small detail about hard drive workings that up until now I've just assumed. I understand that the 440-byte bootloader won't be present on ...
Hashim Aziz's user avatar
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1 vote
2 answers
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Installing rEFInd on Dual Boot Windows 10 Machine

I have two Windows 10 instances on my laptop. When I check the Boot Entries with VisualBCD the first entry for Windows A is this: The one for Windows B is this: Now I added 2 entries to the refind....
Flo's user avatar
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3 votes
1 answer
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Move Windows 10 Bootmanager from one SSD to another

I would need some support one a boot issue with my Windows 10 system. I bought a larger SSD some time ago and reinstalled Windows 10 on the new SSD. It seems it was a big mistake to do the ...
user375251's user avatar
-1 votes
2 answers
2k views

How to boot by default on Windows Boot Loader with UEFI?

I have a problem with my bios which freezes everytime I would like to enter it so I cannot modify anything in it. I've aleady contacted the manufacturer, he is sorry but I have to buy another one. But ...
daam's user avatar
  • 11
0 votes
1 answer
831 views

Prevent Veracrypt (or any other program) from changing the order of boot loaders

Have an installation with dual boot basically as described in the following question: Veracrypt full disk encryption multi-boot Windows 10 and two Linux Distro on same SSD with some shared folders? ...
Blackbam's user avatar
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1 vote
0 answers
446 views

Grub Bootloader of kali linux automatically gets removed frequently

I have Acer 64bit laptop with windows.I recently dual booted kali linux on it and set the BBS priority on Kali.At starting I could select the OS from Grub bootloader menu but now I am having problem....
Broly LSSJ's user avatar
0 votes
1 answer
1k views

Re-enable accidentally disabled Windows 10 Boot Manager

A friend of mine, not fully conscious of what he was doing, accidentally disabled the Boot Manager. This happened after an update gone bad, after which he was presented with Windows Advanced Boot ...
ed0's user avatar
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0 votes
1 answer
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Is it possible to native boot a vhdx after dual booting linux?

I want to install linux on a separate nvme and still boot natively to vhdx's that I will add to the windows boot manager with one normal windows on a separate nvme. Is this possible or does grub ...
user135711's user avatar
2 votes
1 answer
309 views

How to choose from available iso files on boot?

What I want to achieve is I want to be able to choose (either by available iso files or menu entries, which you need to enter yourself, doesn't really matter) the iso file (image of an actual ...
Schrödinger's cat's user avatar
1 vote
0 answers
108 views

How to pass linux kernel cmdline in pmon2000 2.1 command prompt

I have Lemote Yeeloong 8089d laptop, with pmon2000 firmware (version line: "PMON2000 2.1 (Bonito) #14: Tue May 18 10:33:47 CST 2010"). In file boot.cfg I can write something like title 1 kernel (wd0,...
把友情留在无盐's user avatar
2 votes
1 answer
597 views

Accidentally removed boot partition for Windows. How can I recover?

While doing some operation on Ubuntu I accidentally removed boot partition for Windows and now I can’t run Windows again and was unable to run the recovery for Windows 10. Here’s what I have tried: ...
Akshay's user avatar
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0 votes
1 answer
869 views

How to Properly Configure LILO?

I want to use LILO instead of GRUB, so I got some questions about configuring it nicely. Here is my lilo.conf: compact lba32 boot = /dev/sda map = /boot/map image = /boot/vmlinuz-4.19.44-gentoo ...
Monsieur Pierre Doune's user avatar
1 vote
0 answers
97 views

No Apple Boot Logo --- Can't Boot to Install Disc

I have an old iMac (2008) with which I'm having serious problems. Long story short, I installed Ubuntu on the iMac, and in doing so apparently deleted all partitions on the HDD. It also wiped rEFInd, ...
Fridge's user avatar
  • 11
5 votes
2 answers
7k views

is bootloader and bootmanager same thing?

NTLDR in case of BIOS MBR is called boot loader. can we called it as boot manager? are these two things same? I never seen anything like BootManager while doing R&D on BIOS MBR but it came up in ...
shivaniverma6991's user avatar
0 votes
1 answer
7k views

NixOS using systemd-boot instead of grub, although it is disabled in nix config file

I've installed NixOS 19 and as I want to dual boot with Windows 10, I need to use grub. And this is my bootloader configuration: # Boot loader boot.loader = { systemd-boot.enable = false; ...
Avestura's user avatar
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0 answers
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does the boot process vary with UEFI mode?

I dont understand if there is any change in Boot Process using UEFI using GPT partition.? files like NTDETECT, NTLDR, NTOSKRNL, HAL, WINLOGON, LSASS which is used by MBR.Are these same files used by ...
shivaniverma6991's user avatar
3 votes
1 answer
7k views

Windows Boot Manager disappears from UEFI at every reboot

I've been using this system, with a Gigabyte Z370 Aorus Gaming 7 v1 motherboard for quite a while, and everything had been working well, save for a few random duplicated UEFI entries (caused by ...
Manchineel's user avatar
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0 votes
0 answers
775 views

Boot sector constantly getting corrupted

This problem started a few weeks ago : PC randomly freezes (maybe once in a week or more), becomes completely unresponsive and has to be powered off. After that windows can't be booted. It tries to ...
N999th's user avatar
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0 votes
2 answers
523 views

Repairing Windows 7 boot loader after installing Windows XP on another drive/partition

I've had Windows 7 installed for a while now and decided to install XP on another drive. It appears that XP has overwritten 7's boot loader, so XP boots up by default. I popped in my Windows 7 install ...
oscilatingcretin's user avatar
0 votes
0 answers
34 views

How to fix Linux OS is not present on Boot menu?

I've tried to install several times so far Linux Mint 19 alongside Windows 10. Windows 10 is the primary OS. I installed Linux on /dev/sda making manually a swap area, root and home partitions and ...
Ger Cas's user avatar
  • 139
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1 answer
160 views

My laptop was designed for Windows 7 and has issues with Windows 10. What should I do?

I have bought my laptop in 2011, when Microsoft Windows 7 was latest desktop Windows OS. Today, Windows 7 is dead. There is no reason of installing it for four months. I have attempted to install ...
user avatar
3 votes
1 answer
3k views

Fastboot Stuck, but Device Detected

I am on Manjaro Linux, running adb/fastboot version 29.0.2-ArchLinux. I read others, but their problem is device not being detected and no permission (which is not happening to me). fastboot ...
liontra's user avatar
  • 31
0 votes
3 answers
5k views

Dual boot with 2 hard disk

I have 2 sata hard disk drives. I have installed windows 10 os on one and red hat enterprise Linux 7 on other and made both of them bootable. But always , when I boot, it directly goes into windows 10....
Vijayanand A's user avatar
0 votes
0 answers
56 views

GRUB EFI issues

I have recently switched bootloader from BIOS to EFI. My GRUB has some issues: when I enter LUKS passphrase and then press 'Return', I don't see that (cursor doesn't move) Cyrillic text is not ...
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0 votes
2 answers
353 views

How do I install GRUB on bad EFI system?

I have an EFI system. I am able to boot from live USB in EFI mode. However, when I try to install GRUB, system reboots and I see "GRUB" which also appears every time I press any key. I was able to ...
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0 votes
0 answers
135 views

How to Change Bootloader settings for hardware

i'm working on a board that using u-boot this board has a jumper to toggle between booting from QSPI flash memory or nand i'm building its image using LDK provided from the vendor based on yocto ...
Mustafa Alaa's user avatar
1 vote
1 answer
3k views

Grub2 Not Recognizing EXT4 File System

I am trying to make a bootable kali linux usb and have it working for legacy bios computers. However, uefi is causing some trouble. The usb is split up into 3 partitions. The first is the efi/boot ...
user192148's user avatar
1 vote
0 answers
175 views

Systemd Loader - Windows Has No Configuration File

I am currently trying to duel boot Windows 10 and Pop-OS. Pop-OS and Windows 10 are on separate drives and I am using Systemd as my boot loader. To get Windows to show on my boot loader I added the ...
StackAccountHolder's user avatar
0 votes
1 answer
582 views

savenv on Beaglebone Black Wireless UBoot

Sorry if i sound like a noob. I got into the bootloader (UBoot) of my Beaglebone Black Wireless and after i set the environment to default env default -f -a i then enter the saveenv command and get ...
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