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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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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204 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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239 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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156 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
466 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
616 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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64 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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549 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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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
203 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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784 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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842 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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405 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
210 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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1answer
2k 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
92 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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472 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
164 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
138 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
4k 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
309 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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861 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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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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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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574 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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194 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
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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113 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
65 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
158 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
906 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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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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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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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 ...
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1answer
312 views

SSD, MBR, GPT and Linux (choices)

I'm getting a new computer with a 120GB SSD and a 500GB HDD @ 5400rpm, I will install Arch Linux on it and maybe Windows at some point. My indecision starts with the following issues: I though about ...
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Should I configure my New RAID5 Drives as MBR or GPT?

I have a new RAID-5 Setup on a Server here at work. I have just created the RAID-5, and its size is a little over 2.7 TB. Now, Iknow that MBR does not support anything over 2.2 TB, however, I have ...
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582 views

extending a triple boot system: quad boot and beyond?

I have a working triple boot system using Refit, that is modeled closely after the steps detailed in https://help.ubuntu.com/community/MactelSupportTeam/AppleIntelInstallation, except that I'm using ...
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731 views

Repair bad sectors and mbr in hdd

I launched chkdsk, suddenly my PC goes off, and my HDD was damaged ! I have 3 partitions (including the system-reserved one ) I can't access the root one (where win8 was installed and where I have my ...
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70 views

on a server does master boot record formating of the disk support the dynamic disk type?

If I convert a disk from basic to dynamic is it possible to format it to master boot record (MBR) or is it just possible to format with GPT?
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300 views

How do I choose which GRUB the MBR looks at with multiple linux distributions?

I have two instances of Ubuntu running on my computer (The second one is for an operating systems class). The problem is that when I installed the second Ubuntu, the MBR now looks at the second GRUB, ...
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1answer
849 views

What is keeping me on 'Preparing your desktop…' after my Windows 7 parition migration?

Here's the situation: I had Windows 7 and Ubuntu 12.10 dual booting on one 120gb ssd. I recently purchased a 240gb ssd and wanted to migrate both of those partitions to this new one. I used Gparted ...
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FreeBSD Install DVD changed pmbr to mbr leaving Mac OS X unbootable

Recently I was experimenting with FreeBSD 7.4 i386 Install DVD on a Mac mini Intel 2006 on whose harddisk Mac OS X 10.5.8 was installed. My aim was to just see contents of the harddisk from the ...
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What is the use of the [BOOT]/Bootable_NoEmulation.img file on several boot images?

I've seen a file called [BOOT]/Bootable_NoEmulation.img on several boot images, and always wondered what it's use is. Neither found a suitable magic number nor could Google help me so I ask here. ...
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1answer
4k views

Installing Windows 7 on GPT

I have an HP 566 with Windows 8 installed. I removed it, and I wanted to install Windows 7. I have problems installing Windows 7. In BIOS I can choose two boot modes: Legacy boot mode UEFI boot ...
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Factory 2TB GPT disk with 16GB in unused partitions. Is this right?

I just received 4 SATA II Seagate Barracuda 2TB drives that I intend to use for various purposes. Looking at Vista's Disk Management utility I find that all 4 drives come from the factory as GPT disks ...
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How do I fix a Windows XP bootloader error when BOOTCFG, FIXBOOT, and FIXMBR do nothing?

I recently replaced a faulty hard drive with two hard drives that I then raided (1) together and installed Windows XP on about a week ago. Since then, I have always received this error: Windows ...
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MBR partition with more than 2 TB

Various sources (e.g. 1, 2, 3, 4) claim that hard drives using the MBR partitioning scheme are limited to a maximum partition size of approximately 2 TB, and that you need GPT to support larger ...
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717 views

CloneZilla errors when attempting to clone and create partition table proportionally

Carrying on from a question regarding hard drive space on a cloned hard drive, i'm attempting to recover the space using CloneZilla and using the setting -k1, create partition table proportionally. ...
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513 views

Does the 'mount' command rely on MBR to detect partitions, or can it use the GPT partition table?

TL:DR I have Mac, which means I have EFI and a GPT formatted disk with a hybrid MBR. I am considering adding a fifth partition; to do this, I will mask my first three GPT partitions with one ...
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How to check if a drive has an MBR?

I cloned my drive. Then I wanted to select that as boot device, but it didn't show up in BIOS. This forum post says it's because the MBR was not copied. So how do I verify that the MBR was copied? ...