Questions tagged [mbr]
The mbr tag has no usage guidance.
133
questions
0
votes
1answer
60 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
votes
2answers
54 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 ...
-1
votes
1answer
9 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 ...
0
votes
1answer
52 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 ...
0
votes
1answer
167 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 ...
-3
votes
1answer
50 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 ...
1
vote
2answers
40 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
vote
1answer
84 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 ...
0
votes
1answer
94 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/...
0
votes
1answer
57 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.
0
votes
0answers
17 views
How to diagnose the difference in OS performance between installation media?
I have two different USB sticks, a 128 GB Samsung and a 64 GB SanDisk. I used Gnome Disks to benchmark both of them and the Samsung one was supposedly better, it had faster read and write speed but it ...
1
vote
1answer
200 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
votes
0answers
44 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 ...
1
vote
0answers
66 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 ...
1
vote
3answers
41 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
votes
1answer
624 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 ($...
0
votes
0answers
175 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 ...
1
vote
2answers
44 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
votes
1answer
45 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
votes
1answer
67 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 ...
4
votes
0answers
316 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
votes
1answer
2k 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 ...
1
vote
1answer
303 views
How to partition eMMC with DOS MBR and align the partitions to 8 MiB
My question is related to this other one but not a duplicate, so please try to understand before marking as duplicate. I am not able to comment on this other one.
In this other one, I understand the ...
0
votes
1answer
201 views
Boot Windows 7 from partition on Linux: BOOTMGR is missing
I have Debian Linux and Win7 installed on the one machine with grub loader and I need to load Windows 7 from partition with Virtual Box. Here my partiotions:
# VBoxManage internalcommands ...
-1
votes
1answer
76 views
Did I overwrite my Linux installation?
Background info:
I have 2 physical hard drives, on the primary was Ubuntu and the secondary I had Solus installed. The Ubuntu install was installed with the partition and Home directory encrypted. I ...
1
vote
1answer
58 views
Boot problems after installing Linux Ubuntu [closed]
After installing Linux Debian on external HDD (not live Boot), is no booting possible. If I start the PC it automaticly jumps in grub-rescue. How should I fix it? On the Internal HDD is just Windows ...
1
vote
1answer
44 views
Question related to MBR
I was reading Linux boot process and stumbled upon below questions:
When mbr gets write on first sector during installation.?
446 byte of mbr code will be same for either Linux or windows?
How can ...
0
votes
1answer
2k views
Backup boot record of GPT disk
I know how to use dd to backup the boot record of a MBR partitioned disk, but how do I backup the boot record of a GPT partitioned disk?
(I use sgdisk to backup the partition table, but also need the ...
1
vote
0answers
76 views
Setting up 2 drives with MBR with /boot as partition and / as LVM on RAID1
I am building a Fedora 26 server. It has two 320G SATA drives. I have them partitioned the same (fdisk output below). The 2nd partition on each are joined together in a standard md RAID1 configuration,...
1
vote
2answers
441 views
Revive HDD after murdering it with dd?
Situation: we have an old, unused laptop that we want to give to my father and mother in law but Windows kept complaining that the hard drive will fail soon, it should be changed. But unfortunately I ...
-2
votes
1answer
367 views
How does MBR affect UEFI
I recently installed Linux in an UEFI laptop and installed the GRUB loader wrong (MBR based). After this the system did not start in any OS. The boot device selector still listed the UEFI devices, but ...
2
votes
1answer
10k views
fdisk: partition contains a ntfs signature. remove it?
I'm installing NixOs on a ThinkPad X220. Though I'm very comfortable in the shell, it's the first time I've set up my own system, and I'm running into some unknowns while trying to partition the hard ...
2
votes
1answer
444 views
Creating a ext2 partition on FreeBSD 10.1 running on x86 based box with MBR partitioning
I have old FreeBSD machine running on x86 based platform with below MBR partitioning
pod0226-wsa115:rtestuser 1] uname -a
FreeBSD pod0226-wsa115 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Mon Mar 10 15:25:...
3
votes
2answers
19k views
GRUB menu doesn't appear after Ubuntu install alongside with Windows 10
I shrunk Windows partition, freed 100 Gb, installed Ubuntu into it, installed GRUB into into MBS of the first drive and after reboot I got Windows and with no any option to select. Even in BIOS in ...
2
votes
1answer
2k views
fdisk warning message: (Extended) Partition does not start on physical sector boundary
When I run fdisk, I get a warning message:
Partition table entries are not in disk order
Here is an example of the command I'm executing and its output:
sudo fdisk -l
[sudo] password for phil:
...
2
votes
4answers
3k views
Are there extended partitions in GPT partition table?
Under the MBR model, we could create four primary partitions one of which could an extended partition that's further subdivided into logical partitions.
Consider this GPT schematic taking from ...
2
votes
2answers
6k views
Changing from MBR to GPT
I'm trying to completely remove linux from my machine to make way for Windows, but to do that I need to change my disk type to GPT instead of MBR. I have a bootable usb with Ubuntu on it that I can ...
0
votes
1answer
688 views
Warning: Cannot find a valid bootloader location (MBR disk)
I'm trying to Install SolusOS, but I keep getting the following error message from the OS Installer:
"Warning: Cannot find a valid bootloader location (MBR disk)"
I followed documentation, which ...
3
votes
1answer
2k views
Temporarily disabling/uninstalling grub in a dual-boot setup and then restore grub to the state it was at the start
I'm using a dual-boot setup with grub 2.02-beta2 which allows me to switch between Windows 7 and arch linux on a x64 desktop machine.
These are both installed on my C: drive on the same physical HDD. (...
3
votes
1answer
19k views
How to use os-prober to find MS-Windows boot data?
I saw Dual boot - Installed arch and windows entry disappeared on grub and I have the same/similar problem. I have Grub and it shows only Debian setup and not MS-Windows. I also tried the following ...
1
vote
1answer
131 views
Reinstall grub on mbr without copying modules' files or config
if i issued
grub-install --target=i386-pc /dev/sdx
grub-install will write the bootsector to the mbr and try to copy the modules to the boot partition, i don't want that, all i want is to rewrite ...
0
votes
1answer
160 views
Debian unbootable for MBR and grub-efi
I run Debian Jessie (amd64) on my host.
I use Debian Jessie (amd64) as guest (with qemu-kvm).
I run kvm as:
/usr/bin/kvm -monitor stdio \
-smp 2 -soundhw ac97 -vga std \
-...
7
votes
3answers
14k views
Should I use fdisk for partitioning or GPT aware tools?
Question: Should I use fdisk when creating partitions?
Or is it advisable to use parted since it uses GPT? (by default?) And with that I can create partitions larger than 2TB.
3
votes
2answers
1k views
Why is GPT recommended for UEFI
3rd time re partitioning my 1TB SSD so hoping to get it right.
Learning but still many questions
Because my system has UEFI firmware and already have a SSD dedicated to Windows my understanding is ...
0
votes
1answer
301 views
Boot MBR on Mac mini
I am trying to install Qubes OS Linux on my Mac mini. However I want to install it in a MBR configuration on a separate internal HDD.
Is there a way to configure a mac to boot a MBR disk instead of ...
3
votes
1answer
1k views
Converting MBR to GPT because of dual-boot
yesterday I installed debian on my system. It all went relatively smooth and nice. Today I decided to install Windows 10 alongside Debian.
Unluckily W10 wants a GPT partition table, and Debian ...
1
vote
1answer
174 views
understanding this DOS partition table and cloning to a new drive
I have a piece of equipment that has a motherboard in it which boots to a linux based operating system. I am interested in being able to clone this one hard drive so that in the case it fails i have ...
6
votes
1answer
1k views
Boot FreeBSD in legacy mode on GPT disk
I am trying to install FreeBSD in legacy mode (BIOS) on a UEFI system, since I have an Intel Iris Graphics 6100, which is from Broadwell series and is not supported yet by the intel driver, so I want ...
1
vote
1answer
1k views
grub-install on hybrid mbr disk
I followed the very detailed guide for making hybrid MBR record (GPT/MBR) taken from here
Now, gdisk says I have hybrid mbr. But I can only boot in UEFI and cannot do that in BIOS (I use external ...
5
votes
1answer
212 views
Where is partitions in MBR?
I found lot of examples of MBR records on various systems, and they all have same structure, for example - as here.
So - first 512 bytes must have a Code area, Disc signature and Table of partitions.
...
