Questions tagged [mbr]

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21 views

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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1answer
46 views

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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1answer
35 views

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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1answer
82 views

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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0answers
37 views

Remove grub from boot sector

I use Coreboot. Meaning I use SeaBIOS to boot my computer. I use FDE (I don't have /boot in my compute hard drive, instead i have it in a USB). When SeaBIOS can't boot from a device, fallback to ...
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1answer
19 views

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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1answer
66 views

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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0answers
95 views

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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19 views

I tried to unlock my external drive with Dislocker : now my drive doesn't work

I've got a 1TB external drive in NTFS encrypted with Bitlocker. I wanted to open it in Linux (Mint), so I quickly followed a tutorial like a real noob, not understanding how it worked, just pasting ...
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1answer
33 views

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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39 views

Grub-rescue Invalid MBR signature

I have an old but important vdi and I tried to import it in my new virtual machine. The system entered grub-rescue mode. I ran the boot-repair. It did not show the 'Recommended Repair'button. The ...
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1answer
407 views

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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1answer
86 views

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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0answers
88 views

Check which of GRUB Legacy or GRUB 2 is installed in the MBR on CentOS 6 or 8

I'm implementing an upgrade path for a CentOS6 server to CentOS8. This involves moving from GRUB Legacy to GRUB 2. At various points I need to be able to determine which version of GRUB is installed ...
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3answers
241 views

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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2answers
48 views

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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0answers
235 views

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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0answers
119 views

parted start partition and grub core.img

How do you use parted to make the first [primary] partition start at sector 63? Or does this happen automatically when doing parted /dev/sdb mkpart primary 0% <end %> I am dealing with ...
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1answer
105 views

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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0answers
81 views

Grub rescue error after partition deleted

I deleted Linux Mint 19.2, from a dual-boot with Windows 10. I tried to extend the partition but the system would not resize. After restarting, I'm stuck on (Error: no such partition), I've tried the (...
3
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1answer
520 views

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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0answers
27 views

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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1answer
247 views

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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1answer
406 views

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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0answers
762 views

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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0answers
30 views

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 ...
2
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1answer
46 views

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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2answers
400 views

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 ...
0
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1answer
55 views

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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1answer
767 views

Recovering lost partition table with TestDisk

So, somehow the partition table on my disk went bananas: at the next boot the system would not start, I got repeatedly kicked in the BIOS and I had no viable boot options. The BIOS still detected the ...
2
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2answers
362 views

How to determine if a PC has a combination of GPT disk and legacy BIOS boot, where the boot code is read from the MBR?

In a comment, Johan wrote: In the rare combination GPT disk + legacy BIOS boot, the boot code is read in the old-fasioned way from the MBR What is the proper way to determine if a PC has the ...
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1answer
16 views

Is it possible to find boundaries of a Solaris2 partition after MBR corruption?

I had disk with 4 primary partition on it with MBR (/dev/sda): - the first had a NTFS filesystem, with data (/dev/sda1); - the second was a Solaris2 partition, with openindiana (/dev/sda2 on GNU/Linux ...
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1answer
289 views

Linux not booting

I have build my linux image with elbe linux build. This produces an image which can be copied to a filestorage and can be run. This works well if I use the output image and copy it with "dd"-command ...
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1answer
1k views

What do the partition table types and flags mean in the output of parted?

In the output of sudo parted -l: Model: WD My Passport 0748 (scsi) Disk /dev/sdb: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size ...
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1answer
54 views

In GPT, can a partition be partitioned further into partitions?

I heard that GPT makes MBR's distinction between primary partition, logical partition, and extended partition disappear. In GPT, can a partition be partitioned further into partitions, in the same ...
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2answers
42 views

Partition recovered

Partitions MBR has been destroyed accidentally by a friend, Then most partitions are unviewable which is too bad, can all the partitions be recovered? I have a text file including the original ...
1
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1answer
442 views

Significance of /sys/block/sd*/sd*/size

Disk size /sys/block/sda/size is always correct but the partition size /sys/block/sda/sda2/size is not correct if the partition type is extended, boot, etc, due to this I rely on reading MBR to get ...
1
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1answer
303 views

Installation and booting scenarios for combinations of boot sector (GPT or MBR), firmware (BIOS or UEFI)?

I think all the confusions in this post come from coexistence of old and new technologies and abuse of terminology such as mentioned in https://en.wikipedia.org/wiki/...
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1answer
73 views

What is a generic name for the sector which stores the partition table of a disk?

If a disk uses GPT partitioning method, is its first sector still called MBR? What is a generic name for the sector which stores the partition table of a disk? Thanks.
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1answer
446 views

Want MBR install of Mint 19.1

There's a video driver problem with GPT, the Apple A1286 Mid-2010 MacBook Pro machines, and NVIDIA GT330M drivers, and running Nouveau has its own problems, so I want to install Cinnamon Mint 19.1 ...
2
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0answers
72 views

Steps to Boot Linux from USB on Windows 10/Linux Dual Install [closed]

I'm interested in a high-level view of booting Linux from a partition separate from Windows using a USB bootloader. My work computer must have Windows 10 on it because of company policy. IT is ...
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0answers
95 views

Encrypting hard drive containing the MBR with Veracrypt

I have three hard drives in my laptop: /dev/sdc (an mSATA drive) is where the system is installed and is completely encrypted with LUKS. /dev/sdb (for media/text files - the majority of /home) was ...
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3answers
303 views

How to find boot record of external HDD

I have an internal NoteBook HDD hooked up to a Linux machine externally via USB and want to check if this HDD has some sort of boot record on it. I have no access to BIOS and can not boot my device ...
0
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1answer
2k views

How to force GPT partitions in kickstart for Oracle Linux 6

I want to configure OL6 kickstart to install a system that boots from BIOS but uses GPT partitioning instead of MBR, even for disks <2TB. The relevant part of my kickstart file looks like this ($...
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0answers
282 views

GRUB2 won't install into MBR from chroot

I got a blank screen after the "Welcome to GRUB" greetings. I ran grub-install and grub-mkconfig from a chroot, but still couldn't get to the GRUB menu. Because of the setup (former dual boot with ...
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2answers
143 views

Reassemble deleted MBR Partition

I have a MBR table that have a few partition that was deleted previously. What are the ways to reassemble the MBR Partition entry and restore the deleted partitions without using 3rd party tools or ...
2
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1answer
79 views

Installing Debian on a USB hdd doesn't not prompt me where to install GRUB

I'm trying to install Debian to a partition (not the whole disk) on my external HDD. I'm choosing the "Manual partition" option where I select my 100GB partition as root "/" of my external hdd. The ...
0
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2answers
184 views

can i use dd to copy my dual boot HDD(350G) to smaller SSD(120GB) with only one of two OS from HDD

I Have a dual boot machine (windows+ubuntu) with 350 GB HDD. I wish to clone only ubuntu to the 120GB SDD. How can I accomplish this. PS: I have copied Linux partition(sda5) to SDD using "dd", What i ...
5
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0answers
586 views

Should isohybrid work on all iso media, fx Windows 7?

I have a an original Windows 7 Professional x86 iso file, straight from Microsoft. I want to make a bootable USB from this ISO. Some sources suggest that I simply dd the iso to the USB, but I don't ...
5
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1answer
4k views

Can I change an existing partition from MBR to GPT?

I needed to add extra 2.5TB to the existing 400GB disk (sda) on my system. I added new virtual disks with 2.5TB (sdb), proceeded to create the partition table with fdisk. Used pvcreate /dev/sdb1, to ...