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Questions tagged [mbr]

master boot record (MBR)

is a type of boot sector popularized by the IBM Personal Computer.[1] It consists of a sequence of 512 bytes located at the first sector of a data storage device such as a hard disk. MBRs are usually placed on storage devices intended for use with IBM PC-compatible systems.

The MBR may be used for one or more of the following:

Holding the partition table, which describes the four primary partitions of a storage device. In this context the boot sector may also be called a partition sector.

Bootstrapping an operating system. The BIOS built into a PC-compatible computer loads the MBR from the storage device and passes execution to machine code instructions at the beginning of the MBR.

Uniquely identifying individual disk media, with a 32-bit disk signature, even though it may never be used by the operating system.

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Install Ubuntu to hard disk without overwriting mbr?

What's the best way to install Ubuntu without putting GRUB on the MBR? I would think I can install to another partition (logical?), and then install GRUB on a bootable USB. When I want to boot to Ubuntu, just plug in the USB. Would this work? How…
Bob
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Restoring the MBR

While following instructions from this page I accidentally deleted the MBR. I do however still have a backup of the MBR. I tried to resore it using the following command $dd if=MBR-backup of=/dev/hdx bs=512 count=1 Unfortunately the output from…
user218800
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Corrupted MBR, MBR repair does not recognise

Alright here's how I got to this point. I tried to partition my external drive so that I could install multiple OS's on it, 3 linux distros, 1 being ubuntu, and a partition for windows. So I used Gparted and the drives came out fine according to it,…
William
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MBR repair tool

I have a dual-boot configuration with Windows 8.1 and Kubuntu. Apparently Windows did some changes and now I can't boot Kubuntu anymore. I started Kubuntu from the usb disk, but I didn't find any tools there I could use. I've tried several of the…
Thomas Andresen
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mbr seems to be unfixable

My system (1 hdd, 2 partitions - 1=Windows, 2=Ubuntu) is not booting any longer, but when I shut it down from Ubuntu yesterday, there was no problem at all. My last try was boot-repair (with recommended repair) started from a live Ubuntu-usb…
basto
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Lost ubuntu while recovering mbr

I have Ubuntu 13.04(32 bit) and Windows 7. I restored my MBR from Ubuntu using terminal(did not use recovery CD). When I rebooted, the Windows MBR booted to Windows directly. I want to have Ubuntu option in MBR. What can I do to fix this? (I dont…
user183160
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Installing Server 20.04 on MBR

I am trying to install Ubuntu Server 20.04 onto a preformatted MBR disk with these OS's on these partitions: Fat32 (bootable with msdos.98S) NTFS (Windows 10 / Windows server 2019) Fat32 (Flagged as bootable for mounting /boot) EXT4 (For Ubuntu…
James VanGorder
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make new partition table

I,m an amateur web programmer and ignorant on linux advanved features. gdisk shows that i have only MBR type partition table. Is there any solution to make a new partition table without loosing my drives contents? I want to install ubuntu side of my…
amirreza forqani
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