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

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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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0answers
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Recover windows bootloader boot files [duplicate]

I accidentally deleted the windows bootloader files from the EFI partition using Cygwin, now the pc is not booting. I'm hoping I can boot a live linux distro and simply copy the boot files into the ...
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1answer
19 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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0answers
58 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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0answers
58 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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0answers
28 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
95 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
76 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
69 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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0answers
30 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
19 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
24 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
20 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
94 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
15 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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