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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Ubuntu LiveUSB doesn't recognize my Windows 8 installation

I have a laptop with UEFI (secure boot disabled) with Windows 8. I am trying to install Ubuntu 12.10 or 12.04 along side Windows 8 on my primary hard drive, which uses GPT. I am only presented with ...
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GPT partition table problem: Windows 7 and Ubuntu dual boot

I hope you guys will help me get through this situation I have gotten myself into. I bought a new samsung ultra book running windows 8. I knew going into the purchase that I wanted to ditch windows ...
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1answer
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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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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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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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4answers
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Ubuntu 13.04 on UEFI system with Windows Boot Manager as the main loader

On my old laptop (legacy BIOS, MBR disk), this was perfectly possible to get working: I turn on the computer and see the Windows Boot Manager I use EasyBCD (or BootPart, or something else) to add an ...
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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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Can't remove GPT data from MBR

I am having difficulty getting the Ubuntu installer (and gparted) to recognize the partitions on my MBR type disk. Other operating systems and disk tools read the disk structure and the files on it ...
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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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/dev/sdb contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should [duplicate]

When I open gparted, I get the following warning: /dev/sdb contains GPT signatures, indicating that it has a GPT table. However, it does not have a valid fake msdos partition table, as it should....
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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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2answers
10k views

Can't boot a live usb .iso in UEFI mode on Lenovo Edge-15 laptop

I was trying to install Gentoo on my laptop Lenovo Edge-15, but I'm having problems booting a live usb .iso in UEFI mode. I then tried to install Ubuntu, Arch, and Fedora, and seem to be having the ...
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5answers
9k views

Create GUID partition table (GPT) during Ubuntu Server install

On a computer with a new empty hard drive of capacity < 2 TB, I install Ubuntu Server with the standard text-mode installer. I choose to manually partition the disk. Then I can create a new empty ...
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2answers
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 ...
6
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2answers
702 views

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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90 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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30 views

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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2answers
117 views

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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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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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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1answer
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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1answer
33 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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1answer
25 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 ...
2
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1answer
171 views

Partitions mixing up

I am trying to install Ubuntu alongside my Windows 7. The problem is that Ubuntu is not detecting all of my partitions and basically clubs together many of them. The same thing is done by using ...
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6answers
41k views

GPT partition table warning message during install of ubuntu

/dev/sda contains GPT signatures indicating that it has a GPT table. However, it has a fake msdos partition table as it should. Perhaps it was corrupted? Is this a GPT partition table? So, that's the ...
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31 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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1answer
97 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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0answers
100 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 ...
0
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1answer
64 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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2answers
200 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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2answers
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Can't format or delete partitions in pendirve cause of gpt table error

This is what I got while trying to format a partition in my pendirve: Error deleting partition /dev/sdb1: Command-line `parted --script "/dev/sdb" "rm 1"' exited with non-zero exit status 1: Warning: ...
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1answer
37 views

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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1answer
210 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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2answers
3k views

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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3answers
14k views

GPT vs MBR. Why not MBR?

I am a Linux user. I don't have Windows on my laptop. Also the hard drive size is less than 2 TB. Then why should I use GPT tables? Can't I go with old fasioned MBR? I will be having two root ...
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2answers
11k views

Why I need several boot partitions (EFI and bios grub)?

I'm trying to understand how to properly partitioning the disk for future Ubuntu installations. The reason: after trying to install Windows 7 alongside Ubuntu, I enabled "Legacy mode" on my HP ...
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0answers
61 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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3answers
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How can I change/convert a Ubuntu MBR drive to a GPT, and make Ubuntu boot from EFI?

I recently have upgraded my PC, my new Motherboard (ASUS M5A99X EVO) uses UEFi instead of the regular MBR option. I have a Ubuntu 11.10 installation that I did when I had my previous hardware (MSI MS ...
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1answer
278 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 ...
0
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0answers
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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 ...
0
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1answer
378 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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1answer
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SATA SSD GTP table will not reformat

I wanted to reformat my drive as msdos table so i could use it in another system without uefi and put a new installation on it since the laptop it was in died. That said, i first tried gparted and ...
0
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1answer
56 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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0answers
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 ...
2
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1answer
8k views

How to add Ubuntu to the Windows 8 Boot Menu with a GPT Harddrive

I would like to know how to add Ubuntu to the Windows 8 Boot Menu using bcdedit. I have UEFI with secure boot enabled and both OS's can be booted from the UEFI boot menu by pressing F9. I also have ...
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2answers
586 views

Deleted my previous linux partition and now getting stuck at grub boot prompt when i boot from usb/ use “ubuntu” option in bios/EFI boot menu

Let me tell you the full story. I had installed ubuntu and used it. Recently i wanted to use windows only (Windows 8.1) So, i deleted the linux partitions from the diskmgmt.msc in windows.I also used ...
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1answer
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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1answer
5k views

Warning: The Partition is misaligned by XXX - Revisiting this question

I know this has been addressed, but I still have a question: I recently bought a WD 4TB Green hard drive to use as one of my data backups. I made a single partition using GUID instead of MBR. My GUI ...