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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Ubuntu, unable to boot from CD, option missing in BIOS and grub

some time ago I switch from windows to ubuntu and at that time, I formated my hdd and created new partitions. NAME FSTYPE SIZE MOUNTPOINT LABEL sda 698,7G ...
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49 views

How exactly does TrueCrypt work

I have some questions about how TrueCrypt and other Encryption Software work. TrueCrypt overrides the Bootcode in the MBR. Is there any other TrueCrypt Code on the disk which is not encrypted (Chain ...
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Booting Windows and Linux across two physical drives

I'm trying to get Windows 7 and Kali Linux bootable on an old laptop, but there are a few considerations that are making it difficult: 1) Windows 7 is on an SSD, while I installed Kali on the ...
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1answer
25 views

Grub Rescue upon attempting to reinstall WIn8.1 on Msata

New device and not dual boot as far as I am aware. New clean install of win 8.1 was compromised. Intel provided a new device. Upon attempting to reinstall 8.1, it would not allow installation onto ...
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2answers
47 views

How to overwrite 0 sector under Windows XP?

Is there any built in Windows XP command or other utility which will let me overwrite sector 0, so the OS will be non-bootable?
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2answers
26 views

do fixmbr and fixboot change the list of oper. systems on start?

I have added new components in my computer and now I cannot start window 7, but I can Ubuntu, system repair cannot fix the problem. Then I read this I want to try these commands: bootrec /fixmbr ...
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1answer
89 views

Windows 10 Not Booting due to Boot Device not found

I just upgraded from Windows 8.1 to Windows 10 successfully. I think I made a mistake of formatting the old Window 8.1 recovery partition (which was not needed anymore). This was done via the Disk ...
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1answer
69 views

Changing System Drive from GPT to MBR

I currently have an Acer Laptop running Windows 10. My system drive currently has a GUID Partition Table (GPT) but I want to convert it to MBR Partition Table. Doing this wont be a problem as I found ...
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2answers
502 views

No free mbr slots while there should be

I have three partitions on my hard drive. including the system reserved partition, there are 4 Primary partitions and I cant have any more. But I want to have one 110GB Primary partition.(I want to ...
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45 views

Windows 7 installation - setup was unable to create a system partition or locate an existing partition

I am trying to install Windows 7 from a bootable USB drive. I encountered the following error after selecting the partition to install Windows on: Setup was unable to create a system partition or ...
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1answer
41 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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31 views

My harddrive partitions are lost during attempting to install centOS 6.6. How to get back?

I had a windows 7 installation. I wanted to dual boot with centOS. So I separated a space for centOS and created root and swap areas. Then I installed centOS 6.6 normally. But it was not dual ...
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1answer
5k views

How to fix Windows 10 boot loader from Windows

I installed Ubuntu on system that has Windows 10 installed. I can boot to Windows or Ubuntu normally using GRUB. I want to delete Ubuntu partition but first I must restore Windows 10 MBR. Here ...
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156 views

Upgrade Windows 7 to Windows 10 GUID MBR

I have a Windows 7 Ultimate x64 machine with a UEFI/SecureBoot capable BIOS. How can I upgrade to Windows 10 and also utilize the UEFI/SecureBoot capability since my current Windows 7 installation ...
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1answer
35 views

Can a >2TB hard (GPT) drive be used as non-booting data drive on a non-UEFI board?

Our workstation can only boot from MBR max. 2TB hard drive. The BIOS cannot be changed to UEFI mode by firmware update or similar. We are running Win Server 2012 R2. Can we use a 2TB hard drive ...
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31 views

Why does GParted make my flash disk bootable? If not malware then what?

I did sudo dd if=/dev/zero of=/dev/sda where /dev/sda is my flash disk. /dev/sda was all zeros after this. Then I created a partition table with GParted on the flash disk. I made no other changes. Now ...
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2answers
88 views

How to repair a Windows7 boot sector on a secondary hard disk? [closed]

I am trying to rescue a damaged Windows7 here. Unfortunately, its boot record is corrupt (but its partition table is okay, only its boot code is bad). I've put its hard disk into a working Windows ...
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2answers
131 views

Convert disk with OS from GPT to MBR

I'd like to know if it's possible to change disk partitioning standard from MBR to GPT for a disk with OS on which I do that, without loosing the OS. I have windows 7 and want to install side by side ...
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1answer
24 views

How do I identify & fix a defunct MBR entry on a remotely-admin'd Win2008 Server?

My 1&1 Winserver had a disk replaced, and I managed to rebuild the RAID so I have once again two synched disks. The trouble is whenever the server is rebooted it seems to be still trying to boot ...
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3answers
416 views

3TB drive on BIOS system

I have a HP Proliant microserver gen 8 on which I am planning on installing Debian. I was thinking of setting up a raid-1 configuration through the built in raid controller using two Western Digital ...
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0answers
229 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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44 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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65 views

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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53 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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1answer
39 views

Can Linux OS Boot off MBR in Native UEFI?

While UEFI & GPT go together, I was wondering if Linux can be instilled and boot off MBR Partition type while in Native UEFI Mode?
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16 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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1answer
42 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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2answers
134 views

How to delete a OS from dual boot system without harming other one? [closed]

If there is a dual boot system ‘Windows-Linux’ or ‘Windows-Windows’, I mean in one HDD there are ‘a Windows 8.1 partition and a Windows 7 partition’ or ‘a Windows 8.1 partition and a Ubuntu ...
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140 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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2answers
242 views

Overwrote Bitlocker MBR

I'm not sure exactly how I overwrote it, but I was writing a floppy image to a floppy disk (using a USB floppy drive), and somehow I inadvertently wrote the floppy disk to my primary hard disk which I ...
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4answers
235 views

Unable to format partitioned 32 GB micro SD card

I am unable to format my 32 GB micro SDHC card after I made two partitions on it. First partition is FAT32. Second is 4 GB ext3. Now I am unable to format my card and delete partitions on it. It ...
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2answers
115 views

Can't write partition Table

I own an Asus UX31A Prime - 8GB Ram and SSD 256GB - SanDisk. It started about two weeks ago after hibernation (Windows). The problem is that is stocks on boot/resume. I search around it by trying to ...
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390 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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23 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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0answers
260 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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1answer
404 views

There is no “Convert MBR to GPT” option in EaseUs Partition Master

I want to convert my disk to GPT to install windows 10. I found this solution to convert it: http://www.partition-tool.com/resource/GPT-disk-partition-manager/convert-mbr-disk-to-gpt-disk.htm But in ...
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1answer
41 views

Update win 7 MBR with 2nd disk win 10

On the same box I have a hdd with win 7 & a hdd with win 10. Can I get the win 7 to detect that I've added a win 10 disk. I installed the win 10 while using that box, but the 1st disk wasn't ...
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36 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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3answers
348 views

Installing Red Hat based OS on mbr disk

I currently have installed Windows XP and Linux Mint 17 on my laptop. My disk is MBR type because of Windows XP. I have installed linux mint without any problems, but now I am trying to install Red ...
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121 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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266 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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1answer
174 views

How to restore MBR and boot windows 7 from GRUB rescue?

I have a dualboot system with ubuntu and windows 7, I wanted to remove ubuntu so I removed the linux partition from disk management from windows, after reboot I'm stuck in GRUB rescue. How to boot ...
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1answer
261 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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0answers
47 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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50 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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1answer
124 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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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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2answers
381 views

Booting a BIOS bootloader from UEFI mode

I have a Linux setup that I boot in UEFI mode with GRUB. I want to try out OpenBSD, which unfortunately doesn't support GPT or UEFI yet, so I partitioned a drive with a traditional MBR table and ...
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83 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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214 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 ...