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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Is it possible to repair the boot sector on an external hard drive?

Is it possible to repair the boot sector of an external hard drive without a Windows installation disk, without any CD-burning capabilities, and without a USB key drive? In other words, I have an ...
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Is it safe to convert a MBR flash drive to GPT?

I just bought a new flash drive (128GB) and I want to partition it. I have run into problems (AKA windows not recognizing a second volume if I partition it) because it is an MBR drive. Are there any ...
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Modifying boot order through MBR?

So I'm trying to modify the boot order on my machine. It seems it could be done through modifying the MBR(I think, not sure), and I haven't been able to find any good resource on how to achieve this. ...
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Found a way to convert drive from GPT to MBR and vice versa without data loss but,

I also have found a way to convert drive from GPT to MBR and vice versa without data loss using the AOMEI Partition Assistant Pro Edition 6.0 but, I fear because actually, I have Windows 10 already ...
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Having Issues with fixing Windows 10 boot loader from windows [on hold]

Before I get into describing by problem I'd like to point out I am aware of the other threads asking this question, however none for me have been able to solve my issue. I've same issue as described ...
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45 views

How to create MBR bootable Windows USB installer from Linux?

In a Windows machine I have used Rufus for creating a USB installer for Windows. How can I do the same from Linux? I want to create a Windows USB installer (for Linux UNetbootin and many more tools ...
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Is it possible to convert a SINGLE drive partition only from GPT to MBR without affecting other drives?

I want to know how to convert a SINGLE drive partition only from GPT to MBR without making any kind of changes on other drives which are in GPT. This means that no data should be affected on other ...
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“No boot device found” after removing Ubuntu from dual boot with Windows 7

Background information My laptop is a Toshiba Satellite L50-B with Intel Core i7 and AMD Radeon R7 M260. It came with Windows 8 pre-installed when I first bought it, but I soon wiped the disk to ...
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Can't boot windows 7 from SSD

I had windows 7 installed on my primary HD. Then I got an SSD and did a fresh installation on it. Somehow I messed up the second installation (on the SSD) and now to boot into it, I must boot into the ...
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Can I restore a Win10 bootloader with a Win7 DVD?

My friend's struggling with a Windows 10 installation he cloned from a HDD to a SSD. He tried to create a Win10 stick but it failed. So I would like to know if it's possible to restore the MBR/...
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Will formatting the FreeDOS partition make Windows 10 unbootable?

I bought a Lenovo Y700-17ISK and it came with FreeDOS on a separate partition in the beginning of the hard drive. It looked like that: FreeDOS 1 GB - unallocated space 931 GB Then, I installed ...
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Should I reformat from MBR to GPT? [on hold]

I bought a Lenovo Y700 with FreeDOS on a 1 GB partition with 932 GB of unallocated space on the second partition. I wanted to be able to boot 3 systems on it - Windows 7/10, Debian/Xubuntu and ...
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Why can I boot from a USB device without “making it bootable”?

It seems like you can boot from a USB device without a bootloader to me. Even my 6 years old computers that still have a BIOS. From what I read the BIOS simply looks for an mbr, loads it and ...
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Ubuntu - Windows 10 - MBR

I realise this question looks like so many others, but its slightly different and I cannot find an answer elsewhere. Basically I have goosed my MBR numerous times in the past and this time I wanted ...
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Recommended setup with 2 hd and 2 os

I have a Thinkpad T420 laptop, with 2 hard drives: SSD drive, 128GB, GPT (disk1) normal HDD, 5400 rpm, 500GB, MBR (disk2) I need to run 2 OS in this laptop: Windows 10 + Ubuntu 16.04. So, I've ...
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Can a GPT Hard Drive Read MBR Hard Drive?

So, here is my problem: I installed Windows 8.1 Pro on a UEFI/GPT HDD (hdd0). I've been using my computer for a while and it turns out that it's running out of free space. Is it possible to create a ...
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103 views

Relationship between MBR / GPT / UEFI and their limitations

I have a situations where i have to decide to use MBR or GTP and UEFI. I've read too many articles on internet, but I'm confused about some things : I've read that MBR does not support drives with ...
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Multiple operating systems on the same PC and Large Drives

I've always had multiple OS on my Computer. Using MBR and Boot managers i was able to do this until now. But today i've replaced my Pc with a new one that have a large HDD , 5TB. Reading on internet i'...
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Dual Boot Centos7 and Windows 10 - Grub issue with gpt

I am trying to install centos on another partition besides my Windows 10 install. I have installed centos successfully and it boots into centos. I then tried to add windows 10 to the grub.cfg file. ...
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53 views

MBR to GPT migration on Windows 7 x64 — what is the path forward

I use Backup Exec System Recovery to migrate to larger hard drives, to new PCs, etc. I have painted myself into a new corner, and am looking for the way out. Situation: I migrated to a new hard ...
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Set up dual boot Debian (Mint LMDE) Linux + Windows 8.1 **without** efi

The specifics is that in my case Windows 8.1 is installed not in EFI mode: so the partition table is in msdos/fat format and there is no efi partition. Unfortunately: All how-tos and manuals I've ...
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diskpart.exe on Windows 7 with GPT disk — unable to set partition active?

On windows 7. I cannot figure out how to set a volume active or boot on a GPT disk with diskpart. Is that the wrong tool? I am having to go back to MBR, because I just can't figure out how to ...
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Get Windows 7 to boot again

History Originally only Windows 7 was installed on a partition. The first partition was a 100MB recovery partition while the Windows OS and data files was on the second partition. Then I installed ...
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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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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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How to fix mbr if I can't get to the cmd or terminal, and I deleted grub?

Problem I removed the GRUB, BUT in Windows disk management, I started to delete the first (of four) Linux partitions and after I got tired of waiting, I restarted the PC during the deletion process....
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Install Windows 10 on an EFI / hybrid MBR Macbook?

I have an 2011 macbook which has been updated to EFI 1.7. Bootcamp sets up a hybrid MBR to support Windows 7. I need to install Windows 10 on this hybrid MBR setup instead of an EFI/GPT setup ...
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Does the 2 terabyte limit for MBR apply to a partition or the entire disk?

This is really unclear from what I read. I have a 3TB secondary hard drive, but I want to install Windows 7 on that (for dual boot). I have an old BIOS so UEFI is not an option. I understand MBR only ...
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Booting with MBR in UEFI (No CSM mode at all)?

I'm asking here since I can't find a clear and definite answer to if it is possible to boot with an MBR partitioned hard drive in an UEFI-only environment. I've read this question but it is still ...
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Did I lose my data by converting HDD from GPT to MBR? [duplicate]

I tried to install Windows, which required an MBR disk instead of a GPT. I converted GPT to MBR using diskpart utility. After that all my logical disks disappeared and only one (with total amount of ...
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UEFI boot and data disk

I'm on Windows 10 and I'm ready to convert to UEFI boot, but I want to know, if I need to have all my disks with GPT or only disk from which I will boot. Because my data disk is really full and ...
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Do I have to have my OS installed with UEFI to convert my system HDD from MBR to GPT without data loss?

So as of right now I have a PC with a BIOS-only mainboard (Gigabyte 775 - GA-P35-DS3) with which I installed Windows 10 64bit on my 4TB hard drive with MBR. Now I'd like to buy a new mainboard with ...
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Getting error: Windows cannot be installed to this disk. The selected disk is of the GPT partition style

I am trying to reinstall Windows 10 on my friends machine from bootable USB. Following is what I have done till now: I created bootable USB using Windows 10 ISO and Rufus with GPT Partition scheme ...
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Windows 8 install on MBR

I have a Notebook that dual-boots Arch Linux and Windows 8 via GRUB. After swapping hard drives, Windows couldn't boot anymore, and I've spent hours on fixing this to no avail. (I've cloned everything ...
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How would I know if a hard drive was jeopardized by a power surge?

I have a hard drive, from which I have rebuilt the MBR and Boot Sector. I was able to recover the data. My client's computer and data were easily visible prior to a power surge in the home. She would ...
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HDD Stopped Responding

I have an external 500GB hard drive containing a WD Scorpio Black, used all as one partition, encrypted with BitLocker and runs very well. This morning I connected it to my PC, it asked for BitLocker ...
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Messed up my MBR, can't boot from hard drive

can you help me please? I messed up my boot partition and I don't really know how. I tried to install grub wherever I could and accidentally formatted MBR. Bootrec.exe /FixBoot doesn't work Ubuntu ...
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109 views

I created a Windows To Go hard drive and it requires legacy boot

I used AOMEI Partition Assistant Standard Edition 6.0 to create a Windows To Go hard drive (MBR, 4 partitions, Toshiba USB 3.0 v73600-H 2TB) Click for screenshot. I am able to boot to my hard ...
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105 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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Can rEFInd be forced to replace boot code in a MBR?

Is there a way to force rEFInd to replace the boot code in the MBR before preforming a BIOS boot of the Windows operating system on a Mac computer? I understand that if the first 440 bytes in the MBR ...
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Get correct Windows partition back in Grub

Model: HP Compaq Mini 32 bit. Device: Samsung Evo SSD 120 GB. OS: Dual boot --> Linux Mint 17.1 Xfce & Windows 7 Starter. TLDR: Fixed Grub + got Mint back using parted rescue; win7 reboots or ...
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51 views

Bootloaders - Booting an MBR only OS using a UEFI only BIOS

A long time ago, in a computer lab far far away, I stumbled upon a bootloader which dared to cross the boundaries between MBR and EFI. It's name was Clover. Using clover, you could boot any number ...
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268 views

How do I deploy Windows 7 to UEFI or really boot in legacy mode?

I used to deploy a windows 7 image to computers using clonezilla, after creating two partitions and setting the bootable flag on the system partition. Now however, I've got some computers with an ...
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MBR max of 2TiB on each partition or on disk?

A quick point of clarification needed. With the MBR Maketecheasier.com says each partition can only go up to a maximum of 2TB in size The Differences Between MBR and GPT But IBM's ...
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convert logical to primary getting “the operation could not be completed there is no empty slot in mbr”

I have Sony VAIO with Windows7 premium 64-bit and I'm trying to get more free space for drive C -which has only around 8 Gigs free, while I had 48 Gigs free on drive D- so I was thinking of merging ...
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Booting Win7, GPT and MBR disks setup

I've got the following setup in the PC: Old disk: formatted with MBR, New disk: formatted with GPT Both have Win 7 installed are are booting fine on their own (in legacy or EFI mode, respectively). ...
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How to install Windows XP MBR from FreeDOS

I accidentally corrupted my Windows XP installation (i use it for programm testing). Luckily, i had copied the installation files before. Now i made a partition via FreeDOS, and i copied Windows XP ...
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434 views

After upgrading from Windows 7 to Windows 10, system thinks GPT partition is MBR

I have a Windows 7 system with 3 hard drives - Disc 0 is the boot disc formatted with MBR, Disc 1 is a 4 TB disc formatted with GPT, and Disc 2 is a 2 TB disc also formatted with GPT. Disc 1 has one ...
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Is there a difference between the first 446 bytes of different windows MBRs?

After reading a lot about install algorithms for installing windows from linux, for installing linux in addition to windows, .... I'm wondering a bit. From what I read for example for installing ...
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HDD - MBR or LBA corrupted, can it be recreated?

I have to recover an IDE Hard drive with some logical damage. After connecting it as external drive using an IDE-USB interface, I encountered the following: - Number of sectors seems to be zero - In ...