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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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
255 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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2answers
1k views

Is it possible to have Grub2's boot.img in the MBR and have it load core.img from a separate boot partition?

I have a multiboot system that I would like to use Grub to manage. The version of Grub shipping with my Linux distro is Grub2, and it installs its equivalent of stage 1.5-2, core.img, into the ...
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1answer
398 views

Why does an MBR partition table entry have its starting sector as both CHS and LBA?

In an MBR's partition table section, every partition has the first absolute sector available in both the CHS and LBA formats. It's relatively straightforward to convert between the two. When the ...
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1answer
51 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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4answers
1k views

Convert a GPT disk to MBR from XP

So I took some files with me on my external HDD while going on vacation. Through a series of events, I ended up storing the data in a NTFS formatted partition defined in a GUID Partition Table. The ...
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3answers
3k 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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1answer
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Error loading operating system WinXP Pro

So im getting the error "Error loading operating system" when the computer tries to boot to a fresh install of WinXP Pro. To get to this point, I: Shrunk the only partition with Gparted to 33GB ...
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34 views

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
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, ...
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3answers
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Win8x64, after format/upgrade from Win7x86, “GPT Protective Partition” on secondary drive

I backed up all important data prior to formatting the C: drive, but I cannot read the backup drive after reinstalling Windows. More details provided after the screenshots. Additionally As you ...
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1answer
1k 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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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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3answers
499 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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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
598 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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7answers
133k views

boot Windows from GRUB rescue

This is my situation: installed Ubuntu without a CD (using unetbootin) dual boot installation (Windows XP+Ubuntu) didn't like the installation and decided to boot into Windows and delete the Linux ...
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0answers
271 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
240 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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2answers
203 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
658 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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68 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
771 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
4k views

How do I fix my MBR?

I have a Windows 7 dvd but when I try all the methods of repair none of them work. My main OS that is currently 'missing' is Windows 8 with Ubuntu dual boot.
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3answers
223 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
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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1answer
1k 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
1k 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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1answer
269 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
644 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
159 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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2answers
6k views

windows can't startup error 0x490

My workstation has run into a windows startup problem and I would really appreciate any sort of help. 1.When i start windows it goes till the splash screen and then I see the blue screen for a ...
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1answer
400 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
78 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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0answers
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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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2answers
204 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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1answer
867 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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1answer
98 views

Recover partitions

I have a hard disk that was partitioned (recovery and standard boot partition) but somehow became corrupted and I only see a single partition. Can someone recommend any free software that will ...
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0answers
1k views

Recover truecrypt partition without MBR + recovery disk?

I destroyed my mbr and have no truecrypt rescue disk. However, I do know my password and my encryption setup (e.g. hashing functions and ciphers used). This happened after an upgrade to version 7.0a ...
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1answer
1k views

Migrating Windows 7 from MBR to EFI without formatting

Based on the experience documented in Migrate from MBR to UEFI with an encrypted system partition I'm considering the opportunity to migrate Windows 7 from the plain ol' MBR to the new GPT/UEFI boot ...
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2answers
123 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 ...
2
votes
3answers
2k views

Just installed Fedora 18 and computer is not booting

After some initial trouble, I was able to install Fedora 18, but Had to Disable Secure Boot, disable Fast Boot, and Enable CSM. Side Note: I was reading that by Enableing CSM I was not going to be ...
4
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1answer
8k views

How to import existing Linux partition into VirtualBox as guest?

I recently upgraded to Windows 7 (from Windows Vista). I assumed, unwisely, that because it was an upgrade it wouldn't need to screw around with the MBR. However, it apparently did, with the result ...
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2answers
215 views

How can I directly edit the filesystem of a flash drive / flash card?

I have an inaccessible SD card, and I need to manually rewrite the tables for the filesystem. Is there a method I can use to directly edit these file system tables in Windows 8? It should preferably ...
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5answers
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How to chain GRUB2 for Ubuntu 10.04 from Truecrypt & its bootloader (multi boot alongside Windows XP partition)?

I want Truecrypt to ask for password for Windows XP as usual but with the standard [ESC] option, on selecting that, i.e via Escape key, I want it to find the grub for the (unencrypted) Ubuntu install. ...
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1answer
69 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 ...
2
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2answers
183 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 ...
2
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1answer
1k 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 ...