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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Fix MBR and partition table of windows 7 hdd/installation

Apparently the partition table still seems to be somewhere in tact, as well as all the files. Debian is able to mount the ntfs partitions, I can read/write and I am using dd to image the data onto an ...
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5answers
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Windows 8 won't boot, BCD error

My Windows 8 laptop has a boot problem. When Windows tries to boot, I get this error message: Boot configuration data is missing File: \BCD Error code: 0xc0000034 So as suggested I booted to ...
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20k views

Recover Windows 8.1 MBR without a working Windows system available

I just screwed over my MBR and Windows won't boot. I don't have a working Windows system available to create a recovery USB disk. My laptop doesn't have a CDROM drive. How do I create a recovery disk ...
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3answers
67 views

Need a place to store a few bytes of meta information on storage media

I'm working on an embedded project. I need a place to store some filesystem-independent meta information on a storage device. The device has an MSDOS partition table. The device also may have ...
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2answers
771 views

I (stupidly) converted a TrueCrypt encrypted disk to GPT in Disk Management: now TrueCrypt won't mount it

Backstory: After moving a Macrium Reflect disk image from my TrueCrypt external drive (with whole disk encryption) onto a unencrypted drive and using Windows PE with Macrium Reflect to restore my ...
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2answers
930 views

Small unallocated space left, when partitioning harddrive. What is is meant for and why can't I use it?

Every so often I encounter a small unallocated space in the partitioning scheme of a hard drive, when I want to create a maximal sized partition, even though I have set the "Free space following" to ...
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0answers
275 views

Corrupted Windows 8 MBR, recovery disk's repair tools fail

I'm using Windows 8 64 bit on an ASUS N56 Laptop. I was attempting to upgrade to Windows 8.1 and the installation was interrupted. Attempted System Restore, which didn't work. Long story short, I ...
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1answer
54 views

SDD with OS doesnt work because HDD with Bootloader is dead

This kind of problem is very common as I see, but I can't find anything helpful anywhere. There was a common hdd with an old Win7 installation. A new SDD was bought, a new fresh Win7 was installed on ...
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3answers
4k views

Can I recover my 4TB SATA HDD accidentally re-initialized with MBR?

I changed my 4TB SATA HDD to a different 3.5 inch USB enclosure. When plugging the new enclosure's USB cable into my Windows 7 x64 PC, in the Disk Management MMC, it asked to be initialized with MBR, ...
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MBRs, VBRs, and partitioning of storage devices: how and why they vary across device-types?

The wikipedia entry for Boot Sector says this, CD- ROMs usually have their own structure of boot sectors, for IBM PC compatible systems this is subject to El Torito specifications. ...
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3answers
1k views

Convert GPT disk to MBR disk in-place?

Is there any tool that can reliably convert a disk from GPT to MBR in-place? (i.e. without having to backup/restore any partitions.)
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1answer
2k views

How to find out if my MBR is infected?

I imagine that bootkits and other malware can install themselves in the MBR and be invisible to antivirus software running after the MBR was executed. Is there any way to execute an antivirus scan on ...
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4answers
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Using GParted to convert GPT to MBR without access to an OS

I wiped my Windows 8 thinking I could install Windows 7 x86 but I can't because the disk is GPT. I need to convert to MBR. I'm trying to use GParted to convert to MBR but it seems GParted can only ...
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1answer
2k views

Linux Live USB Drive Created with dd Corrupt Partition Table and Reliability Issues

I am trying to create a Linux Live USB drive from an isohybrid (.iso) image. To accomplish this task, I have taken these steps in the past: Securely wipe the flash drive using the command: sudo ...
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1answer
4k views

Kali Linux & Windows 7 : Switching Grub to MBR

I'm trying to install Kali Linux (i386) alongside Windows 7 (x64). I have prepared suitable free disk space and placed Kali there. The last thing done by installation was to prepare GRUB. whole kali ...
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3answers
618 views

Converted my HDD on Mac to GPT

I converted MBR to GPT and I lost everything on both of the partitions, though I just converted one partition (Bootcamp's) but it still converted them both. Any ideas how to get my HDD MBR again and ...
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2answers
7k views

How to create hybrid MBR/GPT partition on USB drive?

Can you please tell me how to create a hybrid MBR/GPT partition on the USB drive? I need the MBR for the boot as my BIOS doesn't boot GPT partitions.
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1answer
2k views

How to Install Windows XP to wiped out HDD without MBR?

I was using my old laptop with SSD as a primary drive. After buying the SSD I formatted the HDD for storing just personal data, so I wiped it out (OS, MBR etc. - everything). Now I moved the SSD to ...
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1answer
716 views

How do I boot a MBR [FAT(32)/NTFS] USB HDD from EFI without legacy bios?

I am using my external HDD for backups, but for restore you need to boot into the specific software's "restore mode/utility" which is often an CD image, but I preffer to not use CD's and just use USB ...
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2answers
287 views

Accidentally Deleted MBR; Don't Know Filesystem Type

I have a Linux derivative OS on a non-bootable hard drive. I'm currently using a LiveCD to help diagnose the issue; however, I mistakingly deleted the MBR in the process via testdisk. Is there any ...
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0answers
310 views

1TB ext4 Harddrive with 400GB NTFS MBR written by mistake

I was imaging my ext4 1tb storage disk that I had accidentally formatted to NTFS with testdisk and an external usb dock when I had to back out. Testdisk asked about writing the MBR and I clicked yes. ...
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2answers
255 views

Laptop not booting to Windows 7

I installed a fresh Windows 7 overwriting Fedora 17. The installation was successful, but the laptop is not now booting. It's showing a black screen with a blinking cursor.
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1answer
853 views

Does rebuilding the BCD affect the MBR?

I'm dual booting Linux Mint and Windows 7, and windows 7 is having a "device inaccessible" error preventing it from booting. I'm using grub for my MBR. From what I understand, the BCD is what ...
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2answers
881 views

Windows 7 GPT to MBR? EFI to BIOS

I want to convert my existing GPT partition table to a MBR one. UEFI is giving me too many headaches with Linux. Actually, I'm just interested in my Windows partition. All the articles on the ...
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72 views

Ubuntu 12.04/xp dual boot testdisk wrote the wrong mbr to my storage disk

Using disk Utility in Ubuntu 12.04, I inadvertently formatted my 1TB ext4 storage disk to NTFS. I was in the process of doing clean installs so I just pulled the drive and set up a usb hdd dock to ...
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2answers
1k views

Partition suddenly became empty, any way to restore it?

I shutted down my o.s. and while it was shutting down I pressed "Cancel" the exact moment it shutted down, so it kept shutting down and I think this corrupted in some way the partition table. The O.S. ...
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1answer
46 views

Need copyied hard drive to be bootable [duplicate]

I copied all the contents of a hard drive to another. It wont boot of it though. I need it to. I deleted a partition and used a data recovery, The files i copied were the recovered ones. It recovered ...
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3answers
243 views

Still Booting to Windows after Debian Install

I recently installed Debian Linux to one of of my storage drives alongside Windows 7 (on a different drive) and for some reason when I start up my computer I still boot right into Windows instead of ...
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1answer
2k views

Mounting Drive to DosBox and using Debug.exe

I am trying to track down the MBR on a scavenged Hard Drive. The hard drive won't boot so I've been trying to change the MBR through DEBUG.exe. The problem starts with my 64 bit machine because ...
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1answer
2k views

Linux set bootflag?

Ok, so I messed up my MBR and I need to set the boot flag, (not the active partition!). I have searched for similar questions but all the answers I see is "how to set a partition to active", and that ...
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2answers
524 views

Chainload EFI Bootloader from grub2 installed on MBR

When trying to chainload a EFI-bootloader from my grub2 I always get an Invalid signature error. According to this question, it happens because my grub2 is installed on an MBR-harddrive. The author of ...
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1answer
312 views

How to extract .raw backup of Windows to a partition?

I have a backup of a Windows 7 drive (virtualbox install) made in .raw format and I want to extract it to my empty partition ready for Windows. Im using OSX. Any ideas? I have tried this: sudo dd ...
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2answers
3k views

Convert MBR to GPT - Without any OS

I just got a new laptop without any OS (it had FreeDOS, but not anymore). When I go to Windows Installer and try to create a new partition from un-allocated space, I don't get any Error message but ...
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1answer
112 views

MBR: Restore Windows 7 bootloader on a Thinkpad

I previously uninstalled Fedora dual boot and now have the GNU Grub bootloader still hanging around. I have found instructions online on how to remove this but they all require the Windows 7 CD. I do ...
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2answers
846 views

Erase MBR from a Mac

So I found a way to EFI install my Windows 8 to my MacBook Air - and now my partition table looks kinda ugly: /dev/disk0 #: TYPE NAME SIZE IDENTIFIER ...
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1answer
212 views

Change Windows from booting with BIOS to EFI from other OS

So I have just used gdisk to remove the MBR on my Mac's drive because I got annoyed that I couldn't access my fifth partition - but then learned I could with GPT. Now that I did the "conversion" (its ...
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1answer
198 views

Put linux on the fifth partition

So I have this quite "insane" partition scheme on my MacBook: Kevins-MacBook-Air:~ Ingwie$ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: ...
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1answer
6k views

Unable to access UEFI BIOS setup or boot into Windows after setting MBR with EasyBCD then resetting it

I can't exactly remember what the menu items were called (because I can't boot into my computer), but I'll try my best. Earlier I tried using EasyBCD with Windows 8 on a UEFI Lenovo IdeaPad Z580 ...
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1answer
478 views

Restore MBR on bad HHD after MBR erase

So here is my (kind of) bad situation. I have this ~640GB Seagate 2.5' HDD. It's and old HDD I was using and it has a lot of important personal data. It used to have a MBR and some Linux partitions, ...
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2answers
1k views

Arch Linux MBR installation

Pardon me for my ignorance, but as a new Linux user, I honestly know little to nothing about these things. I'm trying to set up an MBR install for Arch alongside Windows 8, though it doesn't make much ...
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0answers
91 views

Solaris Automated install Hard-Drive Windows 7

I got two hard disks, one of 40 GB and another one with 1 TB. The 40 GB has windows 7 installed on it, taking all the space of this hdd. The 1 TB disk I got few logical and extended partitions; in ...
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12 views

Linux AutoNeoGrub0.mbr is corrupt of missing? [duplicate]

I've been trying to get my windows boot manager working so I can boot both Windows 7 and Linux. Currently, I can boot both, but only run when I click on "Windows 7" in the boot manager (Linux will run ...
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1answer
1k views

MBR viruses: Is that really possible? What do I have to do to prevent?

I'm going through a real mystery right now. My friend has a Sony Vaio VPCEG notebook and recently it keeps showing the following message: S.M.A.R.T Hard Drive detects Error. Please consider ...
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2answers
217 views

Windows 8 boots very slowly and can't navigate to second SATA HDD, no problems without drive connected

I have Windows 8 installed on a GTP formatted 120 GB SSD, and it runs the OS fine with just that. Connecting my old MBR formatted 320 GB HDD as well shows in the BIOS, but Windows 8 will not load its ...
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135 views

Restore MBR when installation disk is missing

One of our computers had a dual boot with Windows Vista and Ubuntu. I have removed the Linux partitions and Vista was running until I rebooted. Now it cannot boot anymore. Not a big issue as (I ...
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1answer
72 views

Recovery of zeroed first 27MB of disk

I have laptop with SSD inside. Externally I have 750GB disk connected via USB 2.0. I was trying to zero pendrive using Cygwin - pv /dev/zero > ... but zeroed about 27MB of 750GB disk, not ...
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2answers
201 views

Can an SSD have a MBR and a bootloader?

I installed both Linux and Windows on my newly bought SSD (sda). When I installed Linux, I chose to install the bootloader on the SSD (sda). After I finished, I got only a black screen when I chose ...
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1answer
2k views

Can I repair Win XP MBR using WIn 7 CD?

I have a dual boot machine (ubuntu 12.04 and xp sp3) and now I want to get rid of ubuntu. After searching over the internet I found that I should first remove the grub (by fixing the MBR) so that the ...
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1answer
205 views

MBR Partition Table not found

Well... I was trying to activate my windows 7, the first program that I used was "MBR Regenerator" that would turn windows back to the trial mode. Ok. The program asked to a restart, and I did it. ...
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1answer
1k views

Boot entries removed through easybcd. How do I restore Windows 8 MBR?

Somebody deleted my easybcd boot entries when I wasn't looking! I had a dual boot with ubuntu. I used my live usb and installed boot repair on the demo. After I used it, my ubuntu install was working, ...