Questions tagged [mbr]

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Install and boot Linux from a logical partition

I know GPT is the solution but I inherited a machine that has already fully used the 4 Primary partitions: Device Boot Start End Sectors Size Id Type /dev/sdb1 * 2048 ...
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Can you use MBR with UEFI - a question about the UEFI specification

I am reading through the UEFI standard: https://uefi.org/sites/default/files/resources/UEFI_Spec_2_9_2021_03_18.pdf On page 115 section 5 it discusses the GPT disk layout. I'm a bit confused as to ...
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Does Coreboot/SeaBIOS support GPT partition table?

Few days ago, I flashed my x230 with coreboot with this tutorial. Now, while I was installing Funtoo using its GPT-Partitioning guide (not using MBR-Partitioning), I got following error: EFI ...
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manipulating the protective MBR on a GPT disk

I would like to add an empty partition of type 0x00 to the beginning of the protective MBR of a GPT-formatted disk. I've found a way to do this, but the method relies on fdisk enhancements not ...
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fdisk output: "new DOS disklabel"

I have a question about what is happening here. Does "a new DOS disklabel" here mean a DOS partition table has been created? In other words, that a DOS partition table has been created by ...
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Backing up MBR/GPT for detecting boot sector viruses

After installing Linux on a computer (Debian in particular), should I bother backing up the MBR or the GPT and use something like monit to periodically compare the MBR/GPT against this backup? Is this ...
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Booting a 2-partition Windows 10 installation from GRUB2 command-line

I'm using a GRUB2 prompt after booting from a Linux rescue USB flash drive (finnix-123) - trying to boot my Windows 10. It is on an SSD with MBR rather than GPT, with two partitions: one of about 100 ...
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How do you configure GRUB to boot EFI files?

Typically I use a GPT disk and would use systemd-boot to manage things, but I'm working with an older computer, so I have to use GRUB2. I'm using a USB stick to run two OS: Pop OS and Ventoy. What I ...
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What exactly does grub-install do to install grub on a drive?

The official documentation mentions how to use the command and what it does, but not how it does it. From https://www.gnu.org/software/grub/manual/grub/grub.html#Installing-GRUB-using-grub_002dinstall ...
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Where is GRUB stage 2 located on my bootable compact flash, according to the Master Boot Record?

I'm trying to understand where GRUB stage 2 is located on my bootable compact flash. Below is the output of the file command which was run against an image of the MBR (first 512 bytes) of the compact ...
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What does fdisk's Start and End values mean when looking at a compact flash

I'm analyzing a compact flash using fdisk and by comparing it to the contents of the partition table on the CF's master boot record. I don't understand what the "Start" and "End" ...
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MBR converted to GPT based system, how to boot Linux and Windows

How to boot GPT based system to Linux and Windows? This is not a question of starting from a fresh GPT based system, but starting from a MBR converted to GPT based system. My Asus laptop initial setup,...
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Increase disk size and change from MBR to GPT

I have a CentOS server on VMware that has, among others, a disk of 1.5TB, with a single xfs partition using the whole disk. This disk/partition is running out of space, so I need to increase its size ...
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Cannot boot (any more) from MBR SSD drive even if legacy BIOS is enabled

The situation is simple to describe in fact: A MBR-partitioned Kingston SSD of 1TB containing Windows 10 and Kubuntu was moved to a new (HP) laptop: in order to boot there, legacy support had to be ...
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A Debian 10 UEFI disk and another Debian 10 MBR disk are on the same computer with NO dual-boot. Can I then select any disk in the BIOS to boot on it?

A reseller is creating a new computer for me. It will have an UEFI Debian 10 on it. He will also add an old MBR Debian 10 disk on it, I will provide to him. This disk is only here to ensure that I'm ...
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init unable to find root device on computer in restoration

I'm a bit out of solution on this one : I am restoring an old computer (15 years old...), which was running archlinux. I have inadvertently erased the pacman package database (and all /var ...), and I ...
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Clarification onMaster boot record size limitation

I am reading up a bit on Master Boot Record layout and I was particularly interested in how the partition layout causes a size limitation on the size of the storage that can be used on a device with ...
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Issue with MBR / Grub

Some issue with my hard disk -- when mounted inside the laptop, the system is booting into a black screen. Even when I change the boot preference to boot with a usb stick, its still getting stuck at ...
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System boots with MBR, but not with GPT

I have a Linux image made with Yocto that boots on a Pocketbeagle. For the learning experience, I'm trying to move it to using GPT. For MBR, I am using the following beaglebone-yocto.wks description: ...
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Linux boot process

OS: GNU + Linux Boot partition: /dev/sda1 After the MBR makes its decision on which is the active partition (boot partition), it gives control to the Kernel Boot Loader, generally GRUB, to load the ...
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create partition error manjaro installer

I am installing Manjaro with dual boot Windows 10. I created a '/' partition and a swap partition from a 200 GB unallocated space. When I hit install, it shows an error and fails to create partitions. ...
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GPT to MBR: gdisk overlap

I have a 256GB NVMe SSD drive and this is other system drive, which my friend converted from MBR to GTP. This is my output. I used gdisk to convert GPT to MBR, but I have a problem. Problem: MBR ...
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How can I properly install Debian on a laptop that used to have windows? (There is probably a problem with MBR)

I recently broke the screen of my Lenovo Ideapad 110S-11IBR, so I decided to use it as a NAS device. After I tried to install a Debian-based NAS operating system I ran into a problem: Even though the ...
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Problems dual booting - W2019 Server, CentOS, rufus, Dell Studio 1557

I have an oldish Dell Studio 1557 laptop (decent enough - 1TB Samsung SSD, 8GB RAM) on which I've installed Windows Server 2019 Standard from an .iso. I only used about 350GB for the Windows install. ...
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Can I mount a gpt disk with ntfs partition on an mbr booted linux system

System: Linux Mint 20 x64 cinnamon booted on mbr formatted disk. I inserted a new hdd containing a gpt and a ntfs partition (next to a small MSR partition, which doesn't matter here I guess). GParted ...
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installed debian in a multi hard disks environment but when I restart I get "operating system missing" message

I have 4 hard disks installed: ssd with windows; hd with other stuffs; hd 1TB where I installed debian; hd with windows home. I installed debian in the third hd, creating 3 partitions inside it: ...
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How do I start a Windows 10 partition on a MBR partitioned disk on a system that otherwise uses GPT/UEFI GRUB?

Okay, let me explain. This is a UEFI computer. It has two disks. The primary disk is partitioned with GPT and boots via GRUB2 to an Arch Linux partition. The secondary disk is partitioned with MBR and ...
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Need help restoring a corrupted folder

I have a mechanical hard drive that I was trying to access files on. I bought a cheap SATA to USB adapter. Said adapter was underpowered, and I could hear the platter revving up and down. I made the ...
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Problems with dual boot in an old pc (pentium 4) without UEFI

I write all of you because I have expended two weks trying to solve this problem, I have seen a lot of youtube videos and read a lot of forums but I cannot fix this. I want to clarify that I'm only a ...
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How can I boot from that ntfs file?

I have file system called *.ntfs, I ran the file program on this file to get information about it, and here is the output: DOS/MBR boot sector... I want to boot from that file system file, how can I ...
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6 votes
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Linux live USB - Why does ISO 9660 partition cover the entire USB stick?

I've been examining the Ubuntu 20.04 and Fedora 32 live images, and saw that the first (ISO 9660) partition is set to cover the entire image (at least on the MBR's partition table, didn't check GPT ...
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Cant make use of grub-mkimage

I am trying to create portable grub mbr with grub-mkimage to chainload as bootsector from windows. But when booting I get stuck at a black screen with bold "GRUB" and blinking curser. No key ...
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Command to list partition type codes in deb and rpm distributions for MBR and GPT

Is there any command to list all partition type codes recognizable by currently installed distribution (In my case Ubuntu 18.04.03 LTS) I know the following website exists Andries E. Brouwer 1995-2002 ...
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Can a disk partition have another nested inside it?

I am trying to better understand disks, partitions, and partition tables (mbr vs gpt). In the process I checked the disks on one of my machines (single boot ubuntu 20.04), and found that all of my ...
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Accidentally modified MBR; can't boot to Linux anymore

I'm a dual boot user running Windows 10 and Kali linux. I rebuild the MBR by mistake using partition wizard. Now I lost access to my linux I lost swap area menu but I still have the partition I tried ...
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1 vote
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Legacy bootable usb with win10 - linux mint

I have ssd and hdd. Both use mbr scheme. On my ssd I have mint and it is running well. I want to dual boot and install win10 on hdd but I have problem creating legacy bootable usb with win10 using ...
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Using dd to restore a partition backup from MBR disk to GPT one

I have an ext4 partition backed up with dd on a MBR hard drive that I would like to restore to a new GPT hard drive. Can I just create an empty partition of the exact same size on that new GPT drive ...
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Shrink FreeBSD partition

I have an img (made with dd) of a FreeBSD installation on a 1TB HD. This time i need to use a smaller disk (500GB), and of course if I try just to restore the same image it won't work, but even if I ...
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1 vote
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Transferring Grub on MBR connection to different Linux distribution

I had a Linux distribution which had installed grub on MBR. Then I installed second Linux distribtion on a different partition but did not install grub in it. Then I went to first Linux distribution ...
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Any known install iso images using MBR partition and BIOS only installer?

I have a legacy BIOS motherboard which has broken USB-HDD boot capability. The manufacturer has stopped supporting it a long time ago although I subsequently obtained a slightly newer BIOS image and ...
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3 votes
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MBR and bootstrap explanation for different size disk copy

I wish to clone a 500gb MBR source disk to a 250gb MBR destination disk manually by making each corresponding partition on the destination disk and restoring just the data contents of each. This way, ...
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3 votes
1 answer
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UEFI booting using live USB media used for MBR legacy booting

To create a UEFI live USB (running Ubuntu if that matters), my understanding is that the simplest method is to create a FAT32 partition and copy the files from the last ISO there. I would also have to ...
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Boot from grub2.cfg an other bootloader… in same disk

In my USB multiboot i have installed grub2 and edit the first file grub.cfg... now, have created an second partition with an other iso(dd if=file.iso of=/dev/2)...The second iso then created the MBR ...
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Grub menu taking too long to appear [closed]

I am using Windows 10, Ubuntu and Debian 10 in my machine. Everything was fine untill some Debian update (or so as I think). Now when i restart my system only a underscore is displayed on my screen ...
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Grub: install only the MBR parts, not the boot directory?

It seems as though I always have to install files to a --boot-directory when using grub-install. What if I already have existing grub files in /boot on my partitions? Shouldn't I just need to ...
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Install Debian 10 on a system which have both GPT and MBR

I have a notebook which has two drives: one is an SSD and the other is an HDD. It also currently has both Windows 10 (SSD) and Windows 7 (HDD): I want to remove Windows 7 and install Debian 10. As I'd ...
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In a dual-boot system, what decides which MBR bootstraping code is used?

I am reading an article titled How Computers Boot Up. In it, it suggests that a Master Boot Record (MBR) consists of "a tiny OS-specific bootstrapping program at the start of the MBR followed by a ...
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2 votes
1 answer
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How to bind hard disks to /dev/sd* names statically?

Maybe it's an XY Problem, so here's a full situation: We have lots of servers now which will be used as storage/databases. All of them have similar setup: SSD drive for OS (Ubuntu 18.04.2 LTS) and 6 ...
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How does BIOS bootloader know which disk to use?

As I understand it, the GRUB bootloader on a BIOS system (and most other bootloaders for that matter) are comprised of 3 parts. The first part (stage 1) is stored in the first 448 bytes, which is ...
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Whether one physical disk only can have one MBR sector? [closed]

Whether one physical disk only can have one MBR sector? If a disk is bootable disk, the first sector of it is MBR sector. So, is this mean one physical disk only can have one MBR sector, right? ...
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