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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248 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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7k 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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788 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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74 views

Windows 10 vs Windows 7 GPT filesystem incompatibility?

Good evening, I've got a dual boot system with Windows 10 and Windows 7 installed on one HD, and my second HD is an empty one for storing multimedia and games. Both disks are formatted as GPT. I've ...
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33 views

First 32KB of logical partitions. What is there? Consequences of allowing/limiting access to it

This is a very low level disk question, and I have only been working with this stuff for a short time, and it is quite a different learning experience, so pardon any carelessness with terms, ...
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1k views

Computer boots up into 'startup repair' after running disk cleanup

I ran the 'disk cleanup' utility in Windows, and it found 80GB of temp files. This was fishy, since my disk is only 128GB and definitely did not have 80GB worth of temp files, but I let it run ...
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604 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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41 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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2k 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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85 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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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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473 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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17 views

BIOS with 'no issue UEFICompliant' support for GPT partition tables

I would like to change my hard drive partition table from MBR to GPT, (since MBR supports 4 primary partitions). After some searching, I discovered C:\Windows\Panther\setupacl.log, and found a few ...
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60 views

Way to get back formatted Windows MBR partition in dual boot system

I have a Dual boot system and accidentally formatted Windows MBR partition while trying to format a USB (via disks utility). Now I am not able to boot into Windows. My grub doesn't show Windows ...
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62 views

How to get MBR Wizard 3.0 to work?

I've downloaded the program files. Am trying to get MBR Wizard's 3.0 CLI version to run from the command line and attempt fixing my corrupt MBR issue. I'm running Windows 7 as admin, keep typing the ...
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69 views

will Kali linux GRUB make changes to MBR on windows OS

I am new to Kali Linux and am trying to install it in a Virtual Box on my windows 7 system. My question is will Kali linux GRUB make changes to the 'Actual' MBR on Windows OS when I am installing ...
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233 views

Accidentally deleted Windows 7 Boot sector / MBR

Accidentally run the following on system drive instead of USB. OS: Windows 7. 1 system partition and 1 unformatted partition. Now still haven't rebooted while writing this. On C disk root can see ...
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764 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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211 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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811 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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277 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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87 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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75 views

Operating system not found. MBR possibly damanged

I get a can't find operating system message when starting my laptop. I was able to boot into the Windows 7 recovery tools loaded onto a USB. Using diskpart, I noticed my partitions show RAW as the ...
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17 views

How to boot Win 7 after uninstall partition MBR or GPT of Win 8 PC

i have a ASUS Laptop (windows 8.1). Now i already deleted windows 8 Operating System. now can't Install windows 7 Operating System. after selested partition disk have message "can't install".. So can ...
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319 views

Debian 8 Installer (partman) doesn't detect Hard Disk Drives on Ultrabook, but all other linux commands (fdisk -l, lsblk…) does detect

I'm installing Debian 8.0.0 and 8.1.0 (both amd64) on a Ultrabook (Dell Inspiron 14z 5423) which has both a SSD and a SATA HDD. During the install, when it asks for partitioning, I choose "manual" ...
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31 views

Why does Windows keep resetting BCDEdits

I have this Windows 7 machine. System Reserve is C: and main partition with OS files is D:. I used BCDEdit to set {default} from the C: to the D: rebooted 3 times and no issues. A day latter it got ...
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60 views

External USB disks and logical sector size

I have a WD Green 3.0TB in an external USB enclosure. I wanted to replace the disk with a Green 6.0TB. The USB enclosure is usually connected to a device that only understands FAT32 and MBR, so ...
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219 views

PC asks to format Veracrypt Volume

I have a Veracrypt encrypted non-system partition on an external hard drive. The hard drive is GPT-based. On my previous MBR-based hard drives, I used Diskpart and the command SET ID=64 to prevent ...
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65 views

4T RAID 0 Partitioning issue

I am building a new workstation 1.2T 10K SAS X 4 for Win 7 Pro SP1 x64 I must use RAID 0 for this workstation. What I would like to have is C = 500G D = rest of spaces So BOIS based system with ...
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218 views

Bios doesn't see MBR Hard Disk

I was trying to install steamos as a dual boot but it used to fail because it didn't see windows' free spaces. Someone said convert HDD from GPT to MBR. I did it with gdisk and now my Windows doesn't ...
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949 views

How to resize system reserved partition? Win 7 fails to boot afterward.

Firstly, quick background. I have Win7 x64 Pro. The reason I wanted to resize my system reserved partition is this: http://www.pagestart.com/win7br0x8100003301.html The Backup & Restore stopped ...
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86 views

Evga X58 SLI - deleted mbr now can't boot

Somehow, and I did not know this until reboot, my windows 7 pro system files were not on the same disk as the mbr disk the bios was booting from. I ignorantly cleared off this "spare" drive and ...
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143 views

Unallocated space split

Can someone explain this one. Forgive my amateur knowledge... I am using a 500GB MBR disk for my OS drive. Before this, I had a total of 5 partitions with 2 linked together as "extended ...
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34 views

Add partition to dynamic disk with 4 partitions already?

I'm thinking about dual-booting Win 8.1 and Xubuntu, but I have encountered a problem. I have 4 partitions already on my HP Laptop, laid out like so: ...
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436 views

What's wrong with this GRUB setup?

I have two hard disks. The first one contains both Windows and Ubuntu installations, but the first MBR boots to Windows and the second MBR boots, in theory, to Ubuntu. This worked fine until recently. ...
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141 views

Why does UEFI BIOS only identify a 2TB drive on a 25TB virtual drive?

I configure a RAID6 using 16 2TB disks, and finally get a 25TB virtual drive as shown in LSI MegaRAID BIOS. And then I boot via a USB stick and try to install 64bit Ubuntu 14.04 on it. At the ...
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256 views

How to restore the Windows MBR

I have a Toshiba Satellite L505D-S5965 with Windows 8.1 Pro and Ubuntu dual-boot, and I can't restore the Windows 8.1 bootloader with EasyBCD. When I use EasyBCD it always says "Missing Operating ...
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944 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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410 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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111 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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101 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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132 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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334 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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541 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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110 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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1k 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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571 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 ...
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Bootloop on Dell Latitude E7440 Win7 Pro x64 after FUD

I had my SSD set up with full disk encryption using diskcryptor, worked fine for a good while. Then it got stuck in a Startup Repair bootloop. Nothing I can think of that caused it. I removed the ...