The GUID Partition Table (GPT) is a method of partitioning disks. It features up to 128 partitions by default and it uses 64-bit pointers, which means it fully supports disks of up to 8ZiB, as opposed to the 2TiB limit of the older Master Boot Record (MBR) partitioning scheme. GPT is most often used ...

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How to convert MBR partition table to GPT?

I need to install Windows 10 alongside of Ubuntu, but partition table type is MBR, I tried to turn off UEFI mode, use legacy-mode but Windows still don't wont to be installed. (I heard of gdisk ...
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How to convert HDD from GPT partitioned to partitionless keeping BTRFS filesystem intact?

I have a 8TB Seagate Archive HDD partitioned with GPT: BTRFS filesystem (1TB approx), all the rest is now free. I would like to convert this HDD to partitionless (let BTRFS manage full drive) while ...
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alignment on disk

testDisk 6.14, Data Recovery Utility, July 2013 Christophe GRENIER <grenier@cgsecurity.org> http://www.cgsecurity.org Disk /dev/sda - 1000 GB / 931 GiB - > CHS 121601 255 63 Current ...
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GPT ext4 partition recovery - invalid backup header

When I run from a LiveCD to try to recover a non-booting system, I run gdisk /dev/sda and get Caution: invalid backup GPT header, but valid main header; regenerating backup header from main header. ...
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“No root file system is detected”

I'm trying to configure some GPT partitions using preseed/partman. This is what I've got: d-i partman-lvm/device_remove_lvm boolean true d-i partman-md/device_remove_md boolean true d-i partman-...
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Windows corrupts primary GPT table

I have an external hard disk that I share between my Linux laptop and my Windows 10 desktop. The disk has a GPT table, with a NTFS partition and a partition encrypted with Truecrypt. The disk works ...
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How to partman/preseed with GPT

I need to make partitions of a server which has a 3TB HDD. This partitions must be done using preseed file(automatic). I've been searching but I can't clearly understand how partman works in the ...
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22 views

Does installing ubuntu in uefi mode automatically convert the hdd from mbr to gpt?

I had windows 7 previously installed on my pc. I don't have an external hdd. So to save my data I created a normal partition and installed ubuntu 14.04 on it. Later on I formatted the windows ...
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Problem installing Ubuntu Studio from thumb drive to a GT80S Titan with 950 Pros in RAID 0

I used Rufus to write a bootable USB Drive. Rufus configuration: As for "Partition scheme and target system types": I both tried "I tried both the MBR partition scheme for BIOS or UEFI" and "GPT ...
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49 views

MBR and GPT pointing to same OS?

I understand there are a lot of questions regarding this topic of MBR partitions, GPT for UEFI, having dual OS, one with MBR and the other with GPT, but due to my own inexperience I cannot figure this ...
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99 views

working 14.04 ubuntu to error: no such device: grub rescue>

I'm a father and I was trying to get one more entry on gnucash after my youngest woke up. I had gnucash, keypass, chrome and LibreOffice calc up when my son found the power button.... Nooooooo! :D ...
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Disk partition type changed to GPT after crash, need to recover

I need some help recovering a lost partition on my fileserver. I run a virtualized Ubuntu 14.4 (under Vsphere 6) with a lot of disks (7 assigned to the server). Last week, my power supply crashed. ...
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GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted

I have a Ubuntu 14.04.02. As I updated it,there was booting problem on my laptop.After some try it started.How I don't know.So I started fixing my grub as it was also not working. So after seeing some ...
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114 views

Dual Boot Windows 10 & Ubuntu 14.04 MBR & GPT Partition Table problems

I have a Windows 10 and Ubuntu 14.04 dual boot system. I am a novice at Ubuntu but managed to get the dual boot up and running reliably. I am now trying to add a 3TB HD and partition it for use by ...
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7 views

stop TD checking for HFS partition

what does this stupid prompt mean question does not meet quality standards? I am really confused. Trying again. i ran testdisk and because it is a 3tb disk I choose GPT partition. Im thinking i ...
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22 views

Libparted complaining about GPT signatures on disk

This warning comes up while using the Ubuntu studio "Live" from an USB stick, in a PC where the program is installed but the GRUB doesn't work. What does this mean and how can I fix this issue?
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26 views

Change mbr partation to gpt

I already have install ubuntu and now i want to insatll windows 8.1 over it. But while doing this this shows the problem that you should have gpt partaion. So i have to make this parataion from ubuntu ...
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34 views

What exactly is written to disk with an LVM basic install on 1T drive?

I need to reverse an LVM install to an Intel MAC 1T disk, if possible. Even if it's not possible, I still want to know what exactly is written to the disk after pvcreate, vgcreate and lvcreate are ...
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33 views

how to repair grub2 on a gpt partition

I've broken grub (don't know how, maybe resizing the main partition) and tried to fix it through grub-install, currently though booting gives me an init error and drops me in a basic shell. I've run ...
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100 views

Wrong partition sizes (I think?)

I know just enough about Linux to mess things up, so apologies in advance. I have tried looking at some of the other threads here similar to this, but none of the answers seem to help. I have a 4TB ...
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103 views

recover from 'sgdisk --zap /dev/sda' (destroy GPT structures but leave MBR intact)

I just wanted to converted an old computer to an image using Clonezilla disk-to-image, but it failed because of something about GPT and MBR partition tables. But the disk contained only an install of ...
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65 views

Error message on 5TB Harddisk: Partition 1 does not start on physical sector boundary

I bought a Wester Digital Green 5TB harddisk and have difficulties to format it. fdisk -l shows the following message: WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk ...
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206 views

How to Install Ubuntu on a GPT Drive?

I have a fairly new computer that uses UEFI instead of BIOS and the windows 7 installed on it uses a GPT partition table. (I've looked thoroughly, it's GPT and not leftover GPT scraps). Now, I have a ...
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How to prepare a disk on an EFI based PC for Ubuntu?

My computer has UEFI based BIOS and I want to start over from scratch. The PC came with Windows installed - I later installed Ubuntu alongside. I want to completely re-build my whole disk and ...
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GPT accidentaly overwrote by MBR in non-native USB SATA dock

Sorry if I miss some solution, but I can't find issue like my one, especially looking into gpart status in answers. What I have got: Seagate 4000GB 3,5" drive ST4000DM000 Probably shipped as ...
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219 views

How to install Ubuntu on a GPT partition table without using EFI boot?

I'm planning to install a new Ubuntu system on an empty hard drive with more than 3TiB of volume. In order to fully utilize the drive, the regular MBR partition table can not be used. How do I set up ...
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63 views

Can I have a GPT partitioned SSD and an MBR partitioned HDD on the same device?

The title pretty sums it up though I am not sure if it is a valid question. And if not, can the HDD be GPT partitioned with already existing encrypted partitions?
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289 views

Will UEFI boot with EFI partition + MBR partition table work (instead of GPT)?

Is it a requirement for a drive to use GPT partition table if wanted use UEFI boot? Or is it still possible to use MBR partition table as format for drive's partitions and have bootloader saved in a ...
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31 views

Install Ubuntu 14.04 after Windows 7, 2 seperate disks, searched a lot but problem unsolved

My Thinkpad has two disks, 1 gpt ssd + 1 mbr hdd. My main OS is Windows 7, which is installed in the ssd (120GB, nearly full). Now I want to install Ubuntu 14 to the hdd, I searched a lot, I tried ...
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389 views

gdisk unable to write GPT table

I'm trying to recover a disk which appears to have a corrupt ID for the protective MBR. Yesterday I took a backup of the GPT and protective MBR, and dumped to file. At that time fdisk reported the ...
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57 views

Screen turns of during boot and turns on for loginscreen again

I have used Linux a lot in the last two years, and yesterday I installed Ubuntu again after a long term of using Debian. While there was nothing wrong during installation and even booting up a Live-...
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64 views

Trouble when trying to install Ubuntu in dual boot with windows 8.1

I used to work in a dual boot system (w10 & Ubuntu). I was just trying Ubuntu back then, but I liked it so much that I wanted more space in the hard drive for it so I installed w8.1 in a 500Gb ...
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75 views

Recover GPT partitions or partition table

I was partitioning a GPT hard disk using Gparted. I have deleted the Windows recovery partition successfully and merged that unallocated space to another unallocated space which was previously ...
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150 views

Dual Boot Windows 8 - Ubuntu 14.04 with msdos partition table

I have a self-installed Windows 8 on a disk with a msdos partition table. I boot in UEFI, and I have a 350m partition with EFI file of Microsoft. 1. Is it really possible to boot in UEFI with a ...
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13 views

How to fix “The system is running in low-graphics mode” (switchable graphics) [duplicate]

I installed Ubuntu 14.04 to my HP Pavilion laptop. After the installation ubuntu 14.04 it showed me “The system is running in low-graphics mode”. I have Intel Graphic 4600 & AMD Radeon 8600M ...
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836 views

How to resize a partition of a GPT throught Parted Command line tool. (Using SSH Rescue Env.)

I have a Remote Dedicated Server with no Online control panel to resize partitions after initial OS install, so I am using the debian based rescue environment to manipulate the partitions unmounted. ...
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Unable to resize Win partition under Ubuntu

I know my problem sounds pretty common but all advices I found on the internet did not worked for me. I try to resize partition and I cant lower its size.My previous SSD disk failed and I need to ...
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How i can change GPT to MBR?

I cant see my second hard drive wich is GPT, in linux, i mean i cant mount it or use data from it. On windows all good, I load windows8\ubuntu from grub wich use mbr on first hdd. As i understand, ...
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GRUB menu not showing with dual-boot UEFI mode installation

Previously I had Dell Inspiron Laptop with Legacy Boot and MBR disk partitioning with pre-installed Ubuntu 12.04. I needed dual boot with Windows. So I formatted it completely using Live USB, ...
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349 views

Converting unallocated space to GPT

I'm trying to convert either unallocated space to GPT or /dev/sda3 to GPT so that I can install windows on said partition. The issue I'm running into is that when I load gdisk /dev/sda it states that ...
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68 views

copy partition table on raid1 restore to the wrong disk

My computer had a broken disk (SMART warnings). Before I had no raid1. I created one following this tutorial: https://www.howtoforge.com/how-to-set-up-software-raid1-on-a-running-lvm-system-incl-grub2-...
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443 views

Trouble with partition on a USB flash drive

Xubuntu 14.04.3, USB flash drive 4GB. After using the standard tool for writing flash drives in Linux Mint 17.2 MATE i've installed Xubuntu, but when I decided to format the flash drive i got this: ...
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35 views

problem deleting MBR data and GPT data

I am trying to install Ubuntu alongside windows 8 for the first time so I know nothing about Ubuntu and I deleted what so-called MBR or GPT data or both using Ubuntu live by typing (sudo gdisk /dev/...
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Installing Ubuntu without touching the rest of corrupted drive

I have a notebook with GPT and UEFI. This notebook contains Windows 7. But after some problems Ubuntu LiveCD destroyed partition table of this drive and maybe some data. I urgently need this ...
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254 views

How to install Ubuntu 15.04 on UEFI system with SSD

I am thinking about to install 15.04 to my PC which has the following specifications: Previously I have installed 14.04 on this system in UEFI mode and the entry of Ubuntu is still shown in UEFI. I ...
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EFI unstable bootloader

I am running (or trying to) Ubuntu 15.04 on my Toshiba Satellite Radius 11. In case you're unfamiliar with the Toshiba Satellite Radius 11, it is EFI and has a GPT hard drive. I boot into the live USB ...
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273 views

How can I change a drive's partition table from MBR to gpt without losing an NTFS partition at the end of the drive?

Long story short, I have an external USB hard drive formatted using a MBR partition table, and I want to install Ubuntu in UEFI mode in a ~23.40 GB unallocated space before a ~442.33 GB NTFS partition ...
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Suspected broken partition table

My machine is running Ubuntu 15.04 (amd64). I have two SSDs for the OS in hardware RAID1, and two 3TB rotary drives in fake RAID1 which hosts my encrypted home directory. This evening I was ...
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313 views

Location of grub on gpt partition

As far as i undersood the grub program is located fully in the efi partition if i have gpt partition scheme instead just as a link like it was in the older mbr. So now if i remove linux partition will ...
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74 views

Ubuntu 15.04 died when win 10 installed new boot sector

I have a gpt format disk uefi bios. I had ubuntu 15.04 and Windows 8.1 dual booting fine. Windows 8.1 would not install security updates unlessI also installed Wondows 10. Linux vanished and cannot ...