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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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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200 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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6k views

OS Missing? Messed up the MBR on Win7 64-bit

I have a Windows 7 machine with two hard drives: a 1TB C: drive and 500GB J:. I had Windows XP installed on C: and Windows 7 installed on J:. I installed Windows 7 after Windows XP from an installer ...
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719 views

Should I write the MBR to my SSD?

I'm planning to install a SSD soon, and I want to make sure I get all the boot time benefits. Right now, I have Windows and Ubuntu installed on two separate HDDs. The Windows drive contains the MBR. ...
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174 views

MBR and GPT confusion: installing Debian on macbook air

I'm following this question and trying to install Debian on my MacBook. I've lost that account so I couldn't accept that guy's answer (I'm sorry, I'll not loose this one). So, I followed with his ...
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34 views

My disk at half size after formatting

I'm a long time linux user, I'm also a Windows user, after formatting my brand new USB dongle I get ~30Gb from the partition table available to create a new partition where the nominal capacity of the ...
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1k views

Kali/Ubuntu doesn't detect windows partition

I am trying to dual boot Windows 7 with Ubuntu or Kali Linux but i am unable to do so. I have backed up all my data to an external hard drive. So it is safe to work with partitioning. I have a 500 ...
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77 views

How to reinstall Windows MBR with no Windows listed?

There is nice article how to reinstall windows MBR: http://support.microsoft.com/kb/927392 however there is a catch. I have Windows system, but when I go with repair mode it is not shown and as the ...
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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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1k 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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462 views

How can I duplicate HBCD's XP boot loader with my MBR?

I'm stumped. I'm migrating a Win XP Lenovo T500 to an SSD: I copied the XP partition using EaseUS to the SSD. Aligned the boot sector using Gparted The MBR needs to be rebuilt (fair enough) ...
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32 views

4TB GPT drive is raw

Let me give some background first before I get into the issue. A few days ago my PC died and after an hour of troubleshooting I finally confirmed that it was in fact the SSD, so I ordered a new. This ...
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175 views

Clonezilla stopped. Can “sgdisk -z /dev/sdx” destroy all the data on sda?

I need suggestions. I wanted to backup sda2 on which Win7 is installed. I deleted the Recovery Resion. (Probably Testdisk can restore this partition because I haven't done any manipulation on that ...
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96 views

Ubuntu messed up Windows Bootloader (MBR)

I recently tried installing Ubuntu and dualbooting it. I selected the "install alongside Windows 7" option and created a ~60GB partition, and it followed through well. When I wanted to return to ...
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419 views

Windows 7,8 dual boot- winload.exe error: “could not verify digital signature error”

I've a Asus G73Sw that has Windows7 Home pre-installed. I recently added a new 120GB SSD and installed windows 8.1 on it. Everything was fine till recently when the original Win7 on my other HDD, got ...
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137 views

“Operating System Not Found”

I did a bad format of my pc, I think I erased the mbr too. Everytime I turn on pc it shows me the message "No Operative System Found" . I accessed to BIOS and changed booting option to read CD : If ...
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59 views

Windows installation disk MBR error

I need to install windows on a laptop which has no OS. When selecting the partition of Hard disk to install... Gives me such an error:"Windows cannot be installed to this disk. the selected disk has ...
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95 views

First 0x7E00 bytes on USB flash drive have become invisible

I have somehow managed to make the first 0x7E00 bytes (63 sectors) of my USB flash drive invisible to every program in Windows XP. I have tried about 15 different disk editors and tried a lot of MBR ...
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110 views

How do I boot into UEFI without going through Windows on my laptop?

So I installed Ubuntu on my Windows 8 laptop in a dual-boot configuration for some time, and tonight, I decided I would uninstall Ubuntu. Well, I've managed to lock myself out of Windows and I'm stuck ...
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65 views

Moving disk with 4kB sectors from enclosure to internal SATA controller makes MBR invalid

I recently bought a 750GB WD disk for a netbook and formatted it while connected via a USB adapter. Because the adapter would disconnect when it was trying to access the ext4 journal, I connected it ...
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225 views

Debian grub bootloader can't find windows 7

I have been using Windows 7 for quite a while on my machine in the following configuration. I have three hard drives, all different sizes, with Windows being installed on the largest. This is also the ...
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153 views

Recover 2.7TB partition converted from GPT to MBR

I have a 3TB disk which had a 128MB Microsoft basic data partition at the beginning, and the rest was a large ~2.7TB ntfs partition. I recently converted this disk from GPT to MBR, and the second ...
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336 views

How can one Windows 7 corrupt second one on different SSD?

Words of true desperation: Several days ago, my system SSD broke, so I send it for RMA. I was in last step of making my bachelor thesis, so I had to be up and running. I used my second, older 60GB ...
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44 views

Creating an additional partition on MBR partitioned drive with data on it

I have an external 500GB HDD which already has data on it, there is currently one partition on the drive but I need to create a new one on this drive with at least 10GB of space. I've already used ...
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47 views

How to change address of Master Boot Record

Can we change the location ( Starting and Ending address ) of Master Boot Record of a bootable device ? Doing so is operating system dependent or not ? If we can change the location of Master Boot ...
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472 views

How to make grub2 boot another drive MBR?

My laptop (DELL Vostro 3350) have two hard drives: 1- /dev/sda , ssd with Ubuntu14.04 , grub2 installed to this MBR. Installed on normaly hd bay 2- /dev/sdb , stock hd (with recovery partition etc ...
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127 views

Restore hard disk signature

I have put my desktop hard drive into another machine. To make it usable I had to go to Device Manager and click Online. When I put my hard drive back into the old PC, I am not able to boot the ...
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145 views

microsoft boot manager replaced by grub2?

I was running my pc with Win 8.1. I was thinking about trying linux for a long time so I decided to give it a try. I tried to install it several times but I was never able to boot to it, all I could ...
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71 views

dd MBR and one partition

I have 2 partitions on a drive and I need to use dd to create a new image of just the MBR and second partition. Here is the output of fdisk -l /dev/sda Device Start End Blocks ...
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226 views

UEFI BOOTLOADER with MBR Drive

I turned on my laptop today and it started saying "BOOT Device not found Error 03F0 Hard Disk", I checked my BIOS Setup and it was in UEFI Mode, I tried to boot from CD/DVD in UEFI mode and got same ...
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133 views

How to install MBR on to harddrive

Little bit of background... And i may be incorrect. Someone before me, installed the MBR on one hard drive & the Windows 2008 OS on another ard drive. So when the hard drive with the MBR went ...
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538 views

Configured boot loader with EasyBCD, screwed up Windows

I have a particularly challenging issue with my windows boot loader on my Dell Latitude e6520. I have two drives, an internal HDD and a SSD installed into the system device bay in a caddy. Here's my ...
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467 views

Read MBR from Hard disk image file (.img)

I have created two image files (.img) of my two Hard disks which were RAID0. Now I need to copy MBR bytes from my image files in order copy them to mentioned hard disks, because I have re-created the ...
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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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317 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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216 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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712 views

Need help upgrading OSX to Mavericks: Fix GPT and MBR after installing rEFIt

A while ago I installed Ubuntu using rEFIt on a MacBook, 2.4GHz C2D, 4GB DDR3. Sorry, I don't know the exact model. Anyway, I continued to get errors when trying to upgrade to Mavericks. Eventually, ...
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199 views

can't erase MBR of microsd card

I have a microsd that has been used in a windows phone 8.1 phone, I read here and there that I have to erase the MBR of the sd to use it with the pc and other devices. the card seems to work well in ...
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63 views

Uninstalling dual-boot Ubuntu with MBR on separate partition

I have both Win7 x64 Ultimate and Ubuntu installed in dual-boot on a single disk and now I want to uninstall Ubuntu and keep working with windows. Windows was the first OS that got installed and it ...
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31 views

Recovery: what to do when MBR is deleted (Mac)

A bit of background I have an old Macbook (early 2006, Core Duo) that was is in a pretty severe condition, since one of the two memory slots behaves abnormally when I lift the laptop just slightly ...
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317 views

Convert disk with FreeBSD disklabel to MBR or GPT?

I've got a disk that was once partitioned using only a FreeBSD disklabel. The MBR is all 0. The BSD partitions (as dumped by gdisk under Linux) are: BSD partitions: 1 16 ...
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BSOD on VHD on new SSD after a friend played some 'custom' MineCraft… Malicious rootkit virus? MBR corrupt

SPEC: Dell XPS 420 with (almost brand) new Vertex OCZ SSD. Hardware tests seem ok. Hi guys, like a couple of folks have mentioned, I'm having BSOD issue (0x0000007b - 'no boot device') all of a ...
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93 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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94 views

GRUB not loading

I just installed Fedora 18 alongside a pre-existing windows 7 from a live-usb to a single 1TB hard disk with multiple partitions. created all necessary partitions as recommended: / :40GB /boot ...
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119 views

Windows flags secondary SATA drive bootable - can only boot once with the drive in place

On my GPT/EFI-based new Windows 7 PC, I was trying to install my old PC's MBR-based drive as a secondary SATA1 disk. I've got Windows 7 and Linux Mint dual-booting on the new SATA0, but I still want ...
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299 views

3 TB HDD won't reactivate

After doing a clean install of Windows 8 my Seagate 3 TB HDD won't reactivate in Disk Management. The two volumes are there but I can't use them for some reason. The drive was previously used with a ...
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462 views

Can the Lenovo Thinkvantage button be disabled to avoid the need for a custom Thinkpad MBR?

I've migrated to an SSD, but no MBR magic I try works to bootup WinXP from my Lenovo T500. The problem seems to be that a Lenovo laptop requires a custom MBR to provide functionality from the ...
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108 views

Will Win7 ImageCreate overwrite the MBR?

Using Win7 64bit. If i use the Win7 Image Create in the backup/restore app, when i go to re-install the image will it competely overwrite everything, including the MBR??? I want to be able to do ...
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956 views

How to fix my GPT and MBR (hybrid)?

I was trying to create a triple boot (Ubuntu, OS X and Windows), so I used VirtualBox to install Windows 8 (Consumer Preview) to a real (FAT at the time) partition, so it wouldn't have access to my ...
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540 views

Plugged an NTFS drive into a Mac and ruined the partition table/MBR?

I recently plugged an NTFS hard drive which I believed to be functional into a Mac Mini via a SATA-to-USB adapter. The Mac did not appear to read the drive, and after waiting a while and giving up, I ...