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 ...

learn more… | top users | synonyms

1
vote
3answers
6k 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 ...
0
votes
0answers
23 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?
31
votes
3answers
93k views

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 ...
1
vote
1answer
4k views

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 ...
0
votes
1answer
53 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 ...
1
vote
4answers
6k views

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 ...
0
votes
0answers
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 ...
3
votes
2answers
7k 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 ...
0
votes
1answer
68 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 ...
2
votes
2answers
5k views

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 ...
0
votes
1answer
655 views

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
votes
1answer
28 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 ...
0
votes
0answers
27 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 ...
1
vote
1answer
7k 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 ...
-2
votes
2answers
460 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 ...
0
votes
1answer
45 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 ...
7
votes
4answers
33k 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 ...
0
votes
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 ...
2
votes
1answer
4k views

Hard drive disk displayed as 2.2 TB despite being bigger in reality

I've added a new 3TB hdd to my Ubuntu Server 12.04 system for media (already has another drive for the OS), but it's only showing 2.2TB capacity df -H gives /dev/sdb1 2.2T ...
2
votes
3answers
4k 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 ...
1
vote
1answer
95 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 ...
1
vote
1answer
2k views

partitions aren't shown during installation of ubuntu

I've bought a new laptop (dell inspiron 15 3521) with windows 8. Since I mainly use linux I removed the 7 partitions windows 8 apparently needed and made 4 partitions using a pmagic live usb (windows ...
0
votes
0answers
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 ...
0
votes
2answers
250 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. ...
0
votes
2answers
39 views

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 ...
0
votes
2answers
43 views

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 ...
1
vote
1answer
648 views

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, ...
0
votes
2answers
163 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 ...
1
vote
2answers
459 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, ...
0
votes
0answers
41 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: ...
0
votes
1answer
29 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 ...
0
votes
2answers
106 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: ...
0
votes
1answer
203 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 ...
1
vote
1answer
31 views

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 ...
3
votes
1answer
105 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 ...
0
votes
0answers
51 views

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 ...
0
votes
1answer
146 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 ...
0
votes
0answers
67 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 ...
0
votes
1answer
212 views

EFI/GPT system partion with bootable RAID 1 system installation

I've used the ubuntu server installation image to install onto a RAID 1, which is two disks mirrored for redundancy. My configuration is as follows: /dev/sda - 500GB /dev/sda1 - 1GB, EFI system ...
2
votes
2answers
317 views

Windows 8 installer complains about MBR partitions, but I don't see any?

I would like to install Windows 8 on my iMac (mid 2010 model). Currently the main OS on the iMac is Ubuntu 14.04. Using gparted I created an NTFS partition in preparation to install Windows 8 on it. ...
9
votes
1answer
25k views

How can I check and change the partition table type?

New computers that ship with Windows 8 also come with a different partition table than before. This along with the move to UEFI causes confusion, as users are unaware of the newer partition table and ...
0
votes
1answer
983 views

GParted will not start, corrupt GPT table

I'm trying to start GParted and get the following series of errors in pop-up boxes before it eventually quits: Invalid argument during seek for read on /dev/sda Libparted Bug Found! The backup GPT ...
2
votes
1answer
5k views

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted

I've just installed Ubuntu on a new SSD along with a HDD for data. Strangely, when I divided partitions at install, 1MB of non-removable free space was reserved at the beginning of each disk. I ...
0
votes
2answers
1k views

Converting one partition from MBR to GPT to install windows without losing linux

I used to have dual boot with Ubuntu 14.04 and Windows 8.1. I decided to delete Windows partition because things weren't working right on Windows, but now I want to install them again. I now have 230 ...
0
votes
2answers
85 views

Trouble creating fat32 partition larger than 1 TiB with gpt partition table using gparted

I have a 6 TiB hard drive that I would like to make a fat32-partition on covering the whole hard drive. When trying to do so using gparted (first creating a gpt partition table, and then trying to ...
2
votes
3answers
132 views

Booting Ubuntu 14 on Samsung laptop. rEFInd does not see the hard drive

Good day. I am having a really hard time trying to get Ubuntu booting on my Samsung Series 3 laptop. Ubuntu has been installed (and it's the only OS), but didn't boot. I have been through common ...
0
votes
0answers
47 views

Can't set uefi boot order. Faulty firmware? [duplicate]

I am trying to change boot order on my UEFI GPT system (because of preinstalled Windows 8.1) on my HP Envy 15. Successfully installed ubuntu alongside windows. Boot-repair said it successfully did ...
0
votes
1answer
88 views

Kubuntu 14.04 installer does not recognise partitions on hard disk with GPT

For a friend I'm repairing a computer so I have a brand new hard drive lying around. I've found documentation that Linux is capable of booting from a hard drive even if the computer is not UEFI ...
1
vote
3answers
2k views

Is it safe to remove “diag” flagged partitions?

I have a samsung laptop which came with windows 8 on a 1TB HDD. I am preparing my disk with gparted. I expected to see 2 or 3 partitions but there are actually 7! Now I've brushed up on UEFI and gpt ...
5
votes
2answers
17k views

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: ...