Questions tagged [mbr]

Master Boot Record (MBR) is a type of boot sector popularized by the IBM Personal Computer. It consists of a sequence of 512 bytes located at the first sector of a data storage device such as a hard disk.

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"Selected boot device failed. Press any button to reboot". gdisk shows disk with both GPT and MBR after converting back from a Windows dynamic drive

When trying to extend a partition from my SSD (which contained my Arch Linux partition), Windows converted it to a dynamic drive, which messed up my GRUB boot since apparently Linux can't read dynamic ...
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Delete a partition with no drive letter and no file system on a readonly drive

Situation: I bought an SSD disk which required a password when booting the PC. When the PC booted I created a partition spanning across the disk with no letter and no file system. This create a ...
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Mounting RAID0 system with an Intel Controller with Linux

I have two 512GB SSDs setup as a RAID0 on a laptop with a Intel RAID controller. I was running Window 7 Pro on it until I messed up the MBR in the RAID by installing Window 10 and Linux Mint on a ...
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I converted a windows 10 64-bit dynamic disk to basic disk and now it will not boot

I converted my dynamic disk to basic using Aemei Pro, and when restart I get blue screen error message 0xc000000e. Following advice on this help page, here: https://www.aomeitech.com/forum/discussion/...
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Cloning a C drive - boot partitions

I have a small C drive with W10 on it on Disc 0, and a D drive with data on it on Disc 1. I want to move C to a partition on Disc 1 and test Ubuntu on Disc 0. Both discs have a recovery partition, and ...
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Windows 10 won't boot, primary partition has become RAW

My Dell 5559 laptop shutdown suddenly due to power outage. After that, when I tried to turn it on, it gave an error: A disk read error occured Press Ctrl+Alt+Del to restart I have been looking at all ...
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Misconception of MS-DOS booting process?

I was using the latest version of Rufus (more precisely, Rufus 4.1.2045 Portable) to createa a bootable MS-DOS USB drive. This works well, after booting, the ver command shows the following. Windows ...
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How to boot a Windows 98 disk image restored in a larger disk?

Let me explain what I did in detail: found that the Samsung 1.6GB IDE HDD in a Windows 98 PC (Pentium 200MHz) was failing detached it and dumped it using gddrescue through a slightly newer PC running;...
Deim0s's user avatar
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Use MBR instead of GPT for system partition

I am really tired of fact that no linux boot cd can be used with Windows 10 GPT partitions, i am considering to simply use MBR instead for my OS partition and others, is this good idea, performance ...
Roman Toasov's user avatar
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Is it possible to format a 16 TB external hard drive in the file system FAT32?

I've been trying to format a 16TB external hard drive in the file system FAT32 so that it would work on a PS3 and I quickly realised that windows won't allow me to format the drive completely. I ...
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Cannot boot after failed Fedora Dual Boot installation with existing Windows 8

I have a laptop that came with Windows 8 installed on one HDD with two partitions: C: (where Windows 8 is installed) D: (where my personal data is) The OS was installed with a BIOS boot (MBR). I ...
return01's user avatar
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how to create a partition after windows10 installation

I need to create a partition to keep some drivers (preferably at the end of the disk/ssd); I'd shrink the data partition and then created a new one using the UI and the following steps: New simple ...
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Can you view the BCD store and determine if the system is using the MBR or GPT?

Can you view the BCD store and determine if the system is using the MBR or GPT partitioning system?
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SSD can't be initialized or mounted but CAN be booted from. How to fix?

I have an NVMe SSD that has been initialised, partitioned, and formatted using Ventoy. After doing this it became inaccesible from both Windows and Linux systems, but I can boot from it (as long as I ...
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VHD with no boot signature 55AA

I have a VHD sample which does not have the mbr boot signature of 55AA at offset of 510.Usually when I am creating VHD sample on Windows 10 using diskmgmt, it is assigning this boot signature as soon ...
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How to add MBR to existing UEFI USB boot device [duplicate]

I have some old legacy laptops that allow UEFI booting from the hard drive, but not from a USB flash drive. My everything flashdrive is UEFI only. Can I add MBR booting on my flash drive without ...
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BSOD after update, now crashes if a specific HDD is plugged

I was getting a bootloop with "automatic repair" I finally managed to fix it by leaving only my OS ssd plugged in and booting to windows, then it showed a "something went wrong rolling ...
Daviid's user avatar
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Why does a GPT formatted disk have the MBR? Protective MBR

Could you explain how Protective MBR works? As far I know, Protective MBR uses for backward compatibility with old software that was used for MBR. But how those programs see the disk? So, if you use ...
 NAD 's user avatar
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Boot Problems: Windows 10, 1234F: Prompt, NeoSmart and SecureBoot (UEFI)

My issue is different from the other people who have had this issue. I used to dual boot Windows 10 and Debian 9. A Windows update changed the boot loader and I was unable to boot either. A NeoSmart ...
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How to hide a partition on an MBR-formatted SD card?

I have an SD card with MBR, and want one of the partitions to be hidden. I have tried setting partition types to 0x1B and 0x1C, but Windows 10 seems to ignore the "hidden" flag. Is there ...
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Why the location for Partition entry in MBR doesn't contain partition entry?

I'm learning file system recently. wikipedia says the partition table is located at 0x01BE, but when I check my USB drive(NTFS) by a binary tool, there are some words there "Press Ctrl + Alt + ...
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Convert my drive from MBR to GPT

I installed windows 10 in MBR partitioned table. Due to mistake, I delete c:/ drive data and want to install fresh windows but it requires GPT partition table whereas my D & E drive were in MBR ...
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Convert MBR to GPT Using MBR2GPT || Unable beacause System Reserved partition

I would like to upgrade to WIN11 and i am not able since i am no capable of enable secure boot. In order to be able, the disk has to be GPT MS has a great tool to convert to MBR to GPT: MBR2GPT , ...
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Stuck on this MBR2GPT (Cannot find OS Partition) issue

I'm trying to use MBR2GPT to convert an MBR/BIOS disk to GPT/UEFI. I'm getting the error Cannot find OS partition(s) for disk 4. I found this in setupact.log: 2022-12-07 15:38:24, Info ...
Vikthor Ferreira's user avatar
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How can I know if my pc is 'MBR' or 'GBT'

when I want to install windows 10 on my pc, I burnt .ISO file on flash USB , as ' GPT ', but firstly my pc can not see it while installing windows, then I format it and burn it as 'MBR' , so that my ...
abdo's user avatar
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Copy Win10 partitions plus a partition from another disk onto new drive

My goal is to copy the four partitions associated with Windows 10, plus a fifth partition that I have on another drive. The Windows partitions are on an MBR drive, the fifth partition is on a GPT ...
KRyan's user avatar
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Stuck on MBR2GPT issue

I wanted to convert my MBR Windows disk to GPT because I cannot upgrade to later Windows versions. Found the in-place upgrade tool (mbr2gpt) but running into multiple problems. This is my Disk ...
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Boot a legacy BIOS OS on a GPT mass memory?

I installed Windows 95 (legacy BIOS OS) with DOSBox on a 64 bit PC, on a FAT32 partition (with (I hope) its PBR (partition boot record)) on a GPT hard disk, with UEFI Windows 11 and the ESP (EFI ...
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Recovering GPT table after failed volume merge

Background. I shucked a 14TB wd drive. I didn't realize it was exFAT and I wanted NTFS security features (for what it's worth). Upon finding out exFAT was hard to convert and I only had 1.3TB used (I ...
Krustylicious's user avatar
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Can't use or install Microsoft Windows after changing disk to GPT partition style to use Linux

I am having some trouble installing Windows or using it, originally I had an MBR partition table which only allowed three partitions and I wanted to install Linux and I couldn't so I changed MBR to ...
DanielJMMW's user avatar
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3 answers
459 views

How do you restore a GPT partition to a legacy bios device?

I have a UEFI computer with a GPT-partitioned drive. On this drive there is an EFI system partition, a second partition with a bootable Ubuntu system, and lots of unallocated space. I'd like to ...
vincebel's user avatar
2 votes
1 answer
679 views

Fdisk outputting seemingly absurd CHS values

Take the following fdisk input: o # Create DOS/MBR partition table. n # Create new partition. p # Partition type 1 # Partition ID 2048 # Starting sector +4M # Ending sector t # Assign ...
Barné Lighthead's user avatar
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How to restore MBR of Windows (10) if I have a clone of the disk? (restore the MBR only)

All the search results explain how to attempt to fix a broken boot record without a backup. I have a backup. I have a clone of the whole physical disk (not just the partition). Due to reasons, I don't ...
Spectraljump's user avatar
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Windows no longer boots after converting boot disk from MBR to GPT and back to MBR

First my system (as it is now): Gigabyte Z690 Gaming X DDR4 (BIOS Version F8b) Intel i7-12700F 32GB Corsair memory Windows 10 Pro with all updates Samsung 840 EVO 250GB (as boot drive) Samsung 870 ...
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Does right-click Format option remove MBR from USB flash drive?

As I can understand, if we format a USB flash drive by Rufus and copy to the drive Windows ISO files by Rufus, later delete all the ISO files from the drive by Del key, the drive would be still ...
sprsr's user avatar
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2 answers
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Recover data from a GPT Protective Partition

I have a 7TB internal HDD that I have been using on my laptop via USB using a docking interface. Now I am trying to use the HDD on a PC as internal storage (via SATA). However, Windows 10 does not ...
Dr. Strangelove's user avatar
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Windows boots to same drive after cloning

I am trying to transfer my windows install from one drive to another. The issue I am having is whenever I clone the drive and select the new windows boot manager, it boots to the old drive. If I ...
Liam McELhaney's user avatar
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1 answer
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Windows 10 Installer Will Not Rewrite or Cover Linux MBR Any More?

I'm a Helpdesk engineer who prepares laptop for others. Today, Jun. 4th 2022, I tried something here: 1st: I installed Ubuntu Server LTS 22.04 in a AMD Laptop with disk partitions manually created for ...
HeavenElite's user avatar
3 votes
3 answers
1k views

How to normalise Win10 MBR partition to migrate to GPT and standard EFI

My aim is to be able to upgrade to Windows 11. It was originally a Windows XP installation, that went through all the upgrades to WinVista, Win7, Win8, Win8.1 and Win10. With my upgrade path I never ...
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Delete in a secure way MBR from Mac formatted external drive (APM)

I was trying to restore my old external hard drive (Disk 1) with mac files (APM), but when I connected it to windows I accidentally added a MBR boot partition. I do not currently own a Mac computer. ...
franvergara66's user avatar
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Trying to install WIndows on the same disk as Windows installation media

I know I can just use a pen drive but that will take a bit of time and I am impatient, so is there any way I can install Windows on my HDD without a pen drive? The machine is an ASUS laptop and it has ...
Farhan Alvi's user avatar
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2 answers
2k views

Clonezilla: "mismatched GPT and MBR partition". GPT deletion made the system unbootable

Using Clonezilla on a thumb drive to create a system image, in order to clone disks from it; Clonezilla threw an error: "mismatched GPT and MBR partition" and refused to proceed; Searched ...
BsAxUbx5KoQDEpCAqSffwGy554PSah's user avatar
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916 views

UEFI does not list old MBR installed windows 10 in boot options

this is the situation: I had an old PC running on bios and only MBR, I had bought a SSD for it and migrated the updated windows 10 to it and it was working fine. So I decided to build a new PC but to ...
A. choofe's user avatar
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0 answers
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Possible to boot OS originally installed MBR after converting disk to GPT?

I have Windows 10 and 7 on my hard disk. I installed Windows 10 on a partition on the disk, GPT, converted the disk to MBR, installed Windows 7 on another partition, then converted the disk back to ...
Alcatel's user avatar
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Fix MBR for a 16-bit intel 80386sx cpu [duplicate]

i have an old classic computer running ms-dos 3.30 on computer architecture running a 16-bit cpu (80386sx, not to mistake with 80386DX which is 32-bit), i was playing around and messed up the MBR. I ...
Aqil Mehmood's user avatar
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Data Recovery gave me more data than I had

I have a drive with a MBR partition table, and a 2TB NTFS partition. I performed data recovery on the 2TB partition using Wondershare Recoverit, and when the program finishes, you can recover your ...
user1524201's user avatar
1 vote
1 answer
768 views

VirtualBox does not boot hybrid GPT/MBR, neither EFI nor MBR

The same version of VirtualBox on the same installed Debian system does not boot from the raw disk USB flash drive, while on the other system it does, it is also possible to boot the USB flash drive ...
n7rc's user avatar
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2 answers
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"Advanced Options" Fails to return "Command Prompt"

Pursuant to converting Windows 10 from BIOS to UEFI. The procedure calls for invoking the Command Prompt under "Advanced options", so as to invoke from the command line" mbr2gpt /...
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Recovering data from harddrive with defective MBR

a friend of mine currently has a problem with his external Harddrive. Unfortunately it's the only drive he's got a lot of old family photos on, so it's quite important for him. Behavior and my steps ...
Guest's user avatar
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1 vote
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The ACTIVE command can only be used on fixed MBR disks

I installed Ubuntu as a Dual boot, the webcam did not work so I tested several solutions that I found on the web, when they failed and I made a restart to the OS, I got a message /dev/sdb7: recovering ...
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