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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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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What are the differences between MBR vs GPT vs any other partition scheme?

Can anyone tell me what the main differences between i.e. MBR vs GPT or any other partition scheme are? Why would one choose one over the other? I am not an expert but from new release of Mac OS X ...
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How do I restore my Master Boot Record?

I have installed Autocad 2011 trial on my system and then I found out that Autocad Changes the MBR. (see here) Now I want to restore my MBR to before last time of installing autocad 2011 trial (in ...
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How do I create an MBR on a USB stick using DD command line tool

Okay I'm trying to create a BOOTABLE Windows7 image on a USB key from a Mac running Lion. My image is .iso format. I tried: sudo dd if=/Users/myusername/Win7.iso of=/dev/disk1 bs=1m And this ...
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How to see if USB stick has MBR?

I have a USB stick supposed to be bootable, but the computer does not boot it. I suspect that there is no MBR (Master Boot Record). How do I test if this is so, preferably from command line in ...
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How do boot sectors and multiple drives works?

I don't fully understand the concept of a boot sector, I was hoping someone could clear this up for me. If you have two hard drives, with an OS installed on each, does each drive have its own boot ...
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4answers
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What is hd0 and sda/sdb in Linux?

I'm completely new to Linux, and am using Ubuntu 10.04. I'm confused when to use what (hdx,y) to represent which hard drive. I have 2 hard drives, the first one is identified as /dev/sda (in Disk ...
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GRUB in MBR or Partition?

where should i install GRUB? MBR or Partition Boot Sector? What are the advantages and disadvantages of each approach? Also, if we install the GRUB in the Partition Boot Sector then how the boot ...
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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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3answers
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Tools to convert GPT to MBR without access to an OS

I wiped my Windows 8 thinking I could install Win7 x86 but I can't because the disk is GPT. I need to convert to MBR. Is there a tool to do that? Maybe I wrong: but it seems like GParted can only do ...
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New SSD, is the MBR broken? DISK BOOT FAILURE

I've been running Windows 7 on a WD 500gb SATA single drive, single partition setup for some time with no issues. I've just installed a new Kingston V Series 64gb SSD and performed a clean install ...
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How can I move the boot sector to another drive?

When I installed Windows 7 on my new SSD it seems I messed some parts up during the partition selection, and now I have my system partition with the boot sector on another harddrive, and the boot ...
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1answer
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What needs updating when moving a bootable Windows 7 (or Vista) partition?

When I move a bootable NTFS partition with Windows on it to a different block offset, what needs updating to make it bootable again? Background: I plan to write a program that performs the necessary ...
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7answers
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Recovering damaged external hard disk by installing internally

I had a 1TB Western Digital (My book series) 3.5" USB3. One day, the SATA to USB3 converter board was damaged and has not worked since. I decided to open the cover and use the HDD as an internal ...
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5answers
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Clone a Windows Installation to a 3TB Hard Drive; MBR to GPT

I have Windows 7 Professional 64-bit installed on my desktop. Unfortunately for me and my wallet my hard drive is failing. I have purchased a 3TB hard drive as a replacement for my current 2TB ...
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1answer
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Remove Master Boot Code but leave Partition Table?

For testing purposes, I need to fidget with the MBR on a Windows7 test host: I'd like to remove the Master Boot Code but leave the Partition Table within. Does the following Linux command do this, or ...
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Fixing windows MBR without Vista Recovery CD

I had Windows Vista + Ubuntu running on my system. I deleted the ubuntu partitions from Windows. However, when I start the system, GRUB throws up an Error 22 (missing partition) and does not let me ...
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How to correct 512-byte sector MBR on a 4096-byte sector disk?

Final update: I already knew what I needed to do to fix this problem; I just didn't know how to do it. I was hoping there would be some ready-made tool to do that automatically - but couldn't find ...
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4answers
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How do I get my system to find a “buried” MBR?

Following a botched Linux install, my Windows 7 install can't find my MBR normally. It's in there -- somewhere -- and I CAN access it if I use F12 during boot to access the mobo boot options: Note ...
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MBR: How does BIOS decide if a drive is bootable or not?

While trying to answer this question on askubuntu: How do I Uninstall GRUB I read the Wikipedia article on MBR and also the perfect answer on a somewhat related question here on Superuser, however, ...
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3answers
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Is it possible to have more than one MBR in a system?

To my understanding, an MBR on a single device (i.e. hard drive) outlines the primary partitions on that device as well as provides code that can be injected into it that points to the boot loader for ...
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3answers
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Can only see 1.6 tb with an 4 x 4tb raid 0

Im trying to have window see my raid 0 array. Please also note that I did research on google before coming on here. Ok so i just bought a z87-deluxe Dual and trying to set 4 x 4tb drive in a raid 0 ...
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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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How to scan and remove MBR viruses?

Once I read that the Windows 7 installation disc could clean an infected MBR. I also found an article that suggested one tool to scan the MBR for viruses. And I also read that one MBR virus could ...
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Windows (using UEFI boot on GPT disk) will no longer boot after adding an MBR hard disk

I have recently installed Windows 7 64 bit on a new SSD using UEFI boot and GPT. The system worked fine. After adding my old system HD to the system (that uses MBR), Windows will no longer boot ...
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Formatted C: from Windows 7 setup, now it won't even install

Help, I'm so confused. I did more or less what's been described here: I formatted Vista and installed Windows 7 over it. Problem is that I'm now unable to boot I'm installing Windows 7 on ...
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1answer
687 views

BSOD, MBR corrupt, tried to fix using Testdisk on Linux dual boot, now nothing works

The short story is I received a BSOD from a Windows program. I then couldn't boot Windows. My system is set up with GRUB to dual boot into CentOS, so I booted into CentOS and attempted to fix the MBR ...
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2answers
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Make GRUB2 work installing Linux over OEM Win7

I bought an Acer laptop with Win7, and installed Linux Xubuntu as second OS. It says the GRUB was installed as well, but at the boot it keeps loading only windows. No grub screen at all. What to do? ...
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6answers
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How to uninstall GRUB and get windows 7 bootloader back?

I have windows 7 home premium currently installed and I have just recently installed Linux Mint and it has replaced my MBR with GRUB. Is there any way I can restore the normal Windows 7 Boot Loader ...
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3answers
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Restoring MBR, partition table, and boot sector of memory card without data loss (“USBC”)

Abstract I have a FAT32 memory card that when inserted into a computer causes Windows to prompt to format it. The card is definitely not supposed to be blank and has a bunch of files on it. Symptoms ...
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1answer
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Half-installed Windows 7, how to restore Windows XP bootloader

I was going to install Windows 7 on my old pc, however I decided against it half way through the installation (just after first reboot) and I cancelled it. Then I worked out that I can press F8 then ...
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Dual booting Windows 2k3 Server and Linux MBR

I have Windows Server 2003 and Linux installed on one hard drive [on separate partitions]. My first partition is the linux boot partition, and maintains Grub. When I boot the Windows partition and ...
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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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1answer
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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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Fix single entry from mbr [closed]

I use EasyBCD to manage my tripleboot of (1) Windows Server 2008 R2, (2) Windows 7 Professional and (3) Ubuntu Linux. While trying to change the order of my boot menu I ended up losing the Windows ...
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Upgrading to UEFI / GPT / Windows 8

I've recently upgraded from Windows 7 / VMware to Windows8 / Hyper-V with my Dell M6600 and I'm really please with the result. I admit though I like to run the latest stuff so I was wondering is ...
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Would a 7z archive and a copy of the MBR be a complete disk backup?

Consider a disk with a single NTFS C: partition and Windows installed on it. If I were to make a 7z archive of the partition, and grab the MBR via some tool (then store it in a file), would this be a ...
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Repair Windows 7 MBR with Hiren's Boot CD

I would like to repair my Windows 7 MBR using Hiren's Boot CD 15.1. I want to know the generic method, using this CD, to fix an MBR that is hypothetically "toast". This hypothetical HD is as ...
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2answers
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Restore Windows XP MBR without Windows XP disc

Is there a clone of the windows recovery console for windows xp because I no longer have the disc to restore the MBR. I also need to be able to run this off a flash drive because my dvd reader is ...
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GParted errors on MBR Disk, Claims it's GPT. (It's mistaken, but why?)

It's very tempting for me to go on a rant here about GParted and Linux, but I'll do my best to avoid it. :) Question: Why does GParted claim that my disk is corrupted and GPT, whereas the Disk ...
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2answers
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Extend Windows 7 partition to use free space before it

I have some unallocated space before my Windows 7 partition. Can I move the Windows 7 partition so that the free space is after it instead than before it, and then extend the partition to use all ...
3
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1answer
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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 ...
3
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2answers
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Restore Win 7 MBR without Recovery/Install Disc

Here is what I'm trying to do. I'm trying to switch my Primary OS drive from a larger hard drive (1TB) to a smaller hard drive (64GB SSD). All my data only totals up to +/- 35GB, which should fit on ...
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3answers
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Vista - wiped MBR and HEAD of disk - how to recover?

I did something incredibly stupid. I was trying to fix some booting issues with Vista and XP (this was a dual boot system with both OSes installed), and followed some advice online rather blindly and ...
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How do I install GRUB to a USB drive using Windows Vista?

I'm trying to build my recovery usb key drive. I'd like to use GRUB as my bootloader. How do I install GRUB to my usb's MBR? Lots of examples out there seem to expect I'm running Linux.
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1answer
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How can I convert a MBR partition to GPT without loss of data?

I partitioned my volume as MBR and was able to install Windows 7 + Mac OS X. Unfortunately, Disk Utility in Mac OS X cannot resize the Mac partition now because it's not a GPT volume. I also cannot ...
3
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1answer
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Tool for checking boot sector / MBR?

I'm currently trying to recover a friends ATA100 hard drive, that suddenly started giving an 'ntldr not found' error. I've got it hooked up to a ATA->USB converter, and can read the contents. Can ...
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2answers
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2TB external drive, disk initialization: MBR or GPT

I just bought a new 2TB disk drive I plan to use as an external drive (connected via eSATA). When I started my computer it recognized the drive fine, but when I got into the Disk Management, a popup ...
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2answers
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windows 7 not booting after ubuntu partition deletion

I had on my laptop windows 7 and ubuntu server 9.10 (the partition with windows 7 was automatically selected at boot time). Today I wanted to install ubuntu 10.4, and for that I deleted the 9.10 ...
3
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1answer
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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 ...