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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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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133 views

Restore MBR on a Toshiba Satellite Click Mini laptop with Windows 8 after uninstalling Debian 8 using EasyBCD

The Toshiba Satellite Click Mini is a special computer, it doesn't have any CD/DVD drive and the BIOS is special and very limited, it looks like this: When I select "Enter Setup" I have a menu like ...
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138 views

Windows 8.1 freeze on startup - Dell Inspiron 15 (7537)

I have a huge problem. (Sorry for my english) The day befoe yesterday I had a Dell Update shown up on my taskbar, I approved it, it ran, and after that I could not turn my laptop on. When I try to ...
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49 views

Moving MBR on old HDD to new SSD

After running into some problems tonight (that I was able to fix), I discovered that during the Windows 8 installation, the MBR was placed on my HDD (running Windows 7) that was in the system at the ...
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276 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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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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126 views

Possible HDD malfunction. Need help in diagnosing

Today when using my PC as I did for almost 4 years I experienced the following: during opening new tab in Opera browser screen froze. Music (AIMP 3) continued to play for about 5 minutes and then ...
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797 views

Recover data from Dynamic Disk (MBR) bigger than 2TB

Here is the situation: Promise Array FastTrak TX4310 with 3 disks (750 GB each) in RAID5. This comes to around 1500 GB of data. Last week I had the idea of expanding the RAID with an additional 750 ...
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46 views

MBR error at boot Windows 7

I tried to fix it with the DVD but without a result. If the boot order is 1 DVD, 2 HDD it asks to boot from Dvd.
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46 views

How to change the partition scheme

I want to change the partition scheme in my 500 GB HDD from MBR to GPT scheme without losing DATA on it. What are the traditional tools to do this on both windows 7 and Linux(ubuntu)? And what are the ...
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159 views

Using Clonezilla (or alternate) to make a *partial* full disk image of a multi-partition, multi-boot hdd

So I have a windows multi-boot system with XP installed first, then windows 7. I also have further partitions for user data, etc. I do not fully understand where (and what) data is stored on a pc ...
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39 views

Safe to blank MBR of a disk after adding it to an RAID1 array with mdadm?

I created a RAID1 array of two disks, /dev/sda and /dev/sdb, using mdadm. After several booting problems related to the BIOS and SATA/RAID controller of the board, I accidently created some new ...
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99 views

Trying windows 7 dual boot on a windows 8 machine

I have a ThinkPad (T530) with Windows 8.1 with one HDD and this is what I have done to achieve dual boot with Windows 7 on this machine - On my main and only hard disk I created a new volume ...
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644 views

3TB Hard drive stops reading/locks up after a few minutes of use

This has been driving me a little batty lately as i dont understand enough to fix the problem. My HTPC (Windows 7Pro 32bit) currently has two USB HDD plugged in under separate ports. The 2TB is a ...
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91 views

Backing up MBR - why not restoring the boot code?

I've seen two pages explaining how to backup & restore the MBR: Linux: How to backup hard disk partition table (MBR) UNIX / Linux: Copy Master Boot Record (MBR) They've shown an example with ...
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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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311 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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72 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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195 views

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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820 views

GRUB2 rescue boot into windows

I had got 2 partitions on my harddrive: 1. win7; 2. Ubuntu 11.10; As it can be predicted the GRUB loader was in the second partition and this partition was formated from ext4 to ntfs. Now I get this ...
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107 views

Windows 7 not booting, could not restore boot record

After not using Windows 7 for a month (and a few Ubuntu 11.10 updates being applied), I found I'm no longer able to boot from GRUB2 to Windows. I've tried to reinstall GRUB2, and have done some other ...
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575 views

macbook rEFIt dual boot mbr issue

I have ubuntu and osx installed on my macbook. It was working fine up until recently. Now, when I boot I have a 20 second period where it makes the mac boot noise and then proceeds to show a grey ...
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17 views

Use 4TB partition with old NTFS-3G which doesn't support GPT and RAID

I've a D-Link Router (2750U) which has a USB port and FTP Server. I've also a 4TB External H.D.D which I want to use as one partition with this Router as my home cloud. I don't want to split this ...
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How can I create a partition in a the GPT formated drive on OS X, which then results as a GPT partition and not MBR partition?

Looking around on how to install windows 8 or 10 on bootcamp I got the famous error from windows installer telling me I need a drive formatted as GPT an not as MBR. Actually I can't understand why ...
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22 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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13 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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49 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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20 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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32 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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72 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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37 views

windows 8.1 won't boot after allocating free space from C drive

using amoei partiton manager I allocated free space from C drive in order to setup ubuntu 14.04 in dual boot. It took half an hour to allocate free space however, when my PC restarted back it refused ...
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42 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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53 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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79 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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49 views

Convert MBR based install to GPT based

I recently re-installed Windows 8.1 on my notebook, in MBR mode, since I was not able to make the UEFI recognize the flash drive as EFI bootable (then I did not make any research in this topic, but ...
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25 views

Cannot restore Windows MBR

I was trying to dual-boot with Windows 7 and LMDE. I've done it before without issue, but it seems that this time around neither then MBR nor GRUB will work. I've deleted the Linux partition so that ...
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39 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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44 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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50 views

Unlocking SSD (known password)

I got a Samsung NP900x4D for data backup & a simple Windows re-install. At first boot, after the logo, it just displayed 'Boot error' on a black screen. So I said to myself that the MBR is ...
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258 views

USB boot error; F11 Key and ASSIST button not working after losing and recovering partition table / MBR

I lost my partition table but I could recover it and I fixed the MBR. I got back all my partition and files include VAIO recovery partition except files on operating system partition ("C:\"). It was ...
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I've got my MBR on a different drive to my system drive so I need two hard drives to keep my system operational

System: Lenovo E20 Thinkstation 2.93Ghz Xeon / 12GB memory dual 1TB drives. Radeon 5750 GPC Win 7 Ultimate SP1. Ok first off my system is operating fine, but it worries me because it's a bit ...
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27 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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248 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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74 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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74 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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80 views

difference between installing grub in MBR and partition

The two command descriptions below are copied from a chroot description. I must say that I am confused by the distinction; it leads to several questions: What is the effective difference between the ...
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60 views

BIOS can't find hard drive - accidentally changed partition table

My hard drive recently crashed after I had to do hard reboot when my computer froze up. I think there was some I/O happening at the time so there are a couple of bad sectors and stuff. After ...
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695 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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189 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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62 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 ...