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Accepted
Ashu
Asked: 2025-01-10 06:44:00 +0800 CST

I think my Windows Bootloader is missing

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Please refer my this question,

ls -R /mnt/EFI

/mnt/EFI:
BOOT  Dell  ubuntu

/mnt/EFI/BOOT:
bkpbootx64.efi  bootx64.efi  fbx64.efi  mmx64.efi

/mnt/EFI/Dell:
logs

/mnt/EFI/Dell/logs:
diags_current.xml  diags_previous.xml

/mnt/EFI/ubuntu:
BOOTX64.CSV  grub.cfg  grubx64.efi  mmx64.efi  shimx64.efi

Based on the contents of my EFI partition (/mnt/EFI), there is no directory or file related to a Windows bootloader (e.g., Microsoft or bootmgfw.efi). This indicates that the Windows bootloader has been removed or was not properly installed. It was all working fine till mid of Dec 2024. Don't know what exactly happened. My BIOS shows one Samsung PCINVME 1TB SSD(I believe that was the one containing Windows OS Boot loader etc...) Now from gparted it is not visible.

This is the link from boot-repair

Image from gparted enter image description here

boot

1 Answers

  1. Best Answer

    It's Dell XPS 8930 Desktop with lots of modifications. I ran diagnostics(F12) which stated that it is hardware failure enter image description here

    I had taken some notes during last few years which i can refer. As I cannot see historical grub entries and syslog. Samsung 860 EVO lasted around 5 years and then died

    Disk /dev/sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: Samsung SSD 860 
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 58CC91D9-5470-4EC1-BA68-7CDE2C89825D

Device          Start        End    Sectors   Size Type
/dev/sda1        2048     206847     204800   100M EFI System
/dev/sda2      206848     239615      32768    16M Microsoft reserved
/dev/sda3      239616 1952511999 1952272384 930.9G Microsoft basic data
/dev/sda4  1952512000 1953523711    1011712   494M Windows recovery environment

    I tried using it on other computers/laptops and it didn't worked. Would be replacing it with another one.

    Update I have multiple drives(it being a desktop - taking advantage of that). Drive on which Windows 11 Pro was there was Samsung 860 EVO which finally died while I was on on vacation. Windows installation is not that great, it just doesn't move forward because of faulty hardware(it could have chosen empty space on other drives). After removing failed SSD-I was able to install Windows 11 Pro again and back to business.

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