GUID Partition Table (GPT) is a format for partition tables that was designed within the UEFI specification by Intel. It was designed as the successor to the Master Boot Record partition tables.

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Windows 8 Pro 64 bit GPT Protective Partition after restart

Note: I thought I had one problem regarding this topic, but that has since evolved. Below is the pared down version. After some problems, restarts, and a complete reinstall of Windows 8, my WD 3TB ...
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Windows 7 + Ubuntu dual boot + conversion to GPT

I have received a new Lenovo T420 laptop with Windows 7. The disk now contains: a hidden SYSTEM_DRV boot partition (1.17 gb, 400mb used). I'm guessing this is the EFI partition, the laptop comes ...
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creating UEFI USB Boot stick using rufus option gives errors

I am trying to install windows 7 from a USB UEFI stick that I tried to create in vain. I read other posts on creating UEFI USB Boot sticks and found Rufus the most convenient option . However , Rufus ...
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Put linux on the fifth partition

So I have this quite "insane" partition scheme on my MacBook: Kevins-MacBook-Air:~ Ingwie$ diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: ...
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GPT partition table is corrupt after every one to three reboots

After 2 or three power cycles, I get the grub rescue menu. I use a Ubuntu LiveCD to check my drive status and gparted says that my drive don't have any partitions. I checked the internet and I found a ...
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Arch Linux on an external HDD GPT-Partitioned

I have an Alienware M14x-R1 and had an Arch Linux System installed on its 750Gb HDD, everything working fine, GPT-partitions (on BIOS, not EFI) and GRUB bootloader. Then I bought a new Corsair SSD, ...
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34 views

How to change the partition scheme

I want to change the partition scheme in my 500 GB HDD from MBR to GPT scheme without losing DATA on it. What are the traditional tools to do this on both windows 7 and Linux(ubuntu)? And what are the ...
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49 views

Windows install on GPT with multiple drives

I've got quite an interesting system configuration here, and I would like to install Windows 10 preview on it. I have 3 drives, out of which one is a SSD. They all have a GPT table. Drive 0 (the ...
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72 views

Move a LUKS partition to the left and resize it

I have a LUKS encrypted partition that is NOT into an LVM volume manager. It's at the end of the hard drive, and its size is 250 GB, but I want to add 50 more GBs to it. I would normally use GParted ...
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86 views

Minimum requirement to boot Ubuntu from GPT partition

My third disk was partitioned as GPT format, and was originally intended only to be used as a storage device, but now I need to boot from it as well. I did put a 200M ext2 boot partition as the first ...
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118 views

Failure to create hibernation partition on GPT SSD boot drive

I've searched a number of forums and am surprised no one seems to have had the same problem as me. I have only one SSD (Samsung EVO) which is also my boot drive (UEFI, z97 board) for my desktop ...
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324 views

Booting a GPT USB key on older BIOS laptop

I have an old HP EliteBook 8530p, which does not support booting from GPT USB (GPT HDDs are fine though). Lately I had the wish to have a fast-to-start OS for browsing, smaller web tasks, etc., so I ...
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210 views

How can I manually partition and provision a Windows 8 USB install drive with UEFI bios and GPT scheme?

For whatever reason, I cannot get the windows 7 and windows 8 usb install tools to see my usbdrive, even though my bios can. How can I manually (from elevated command prompt) partition and provision ...
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461 views

3TB Hard drive stops reading/locks up after a few minutes of use

This has been driving me a little batty lately as i dont understand enough to fix the problem. My HTPC (Windows 7Pro 32bit) currently has two USB HDD plugged in under separate ports. The 2TB is a ...
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180 views

How can I move an Win 8.1 GPT EFI installation to a smaller disk?

which programs do you use to move a whole HDD (GPT EFI Win8.1 installation with the "boot" and "reserved" partition) to a (~10MB) smaller one? I tried "mini tool partition wizard" and "gparted live" ...
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99 views

Can't boot into linux on gpt-partition external drive on a pc

I've got an external HDD "Seagate Backup Plus 1TB". It's partitioned using the GPT scheme and carries two file partitions, an hfs+ OSX partition with OSX operating system installed, and an ext4 ...
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284 views

How to remove redundant grub from a GPT hard drive?

I once installed Debian onto my hard drive with GPT so there is a grub on it. Recently I erased Debian and install Windows Server 2012. But the grub is still there (which can launch nothing and I am ...
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Installing Windows 7 on UX31A's GPT disk

There are a lot of Windows/GPT-related questions out there, but from what I've been reading these past hours, I seem to be doing the right thing... except, well, obviously not. I'm trying to install ...
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217 views

Why wont my computer boot from the logical raid volume while installing Windows 7

I have new computer I built the motherboard is an ASUS Sabertooth 990FX. The motherboard has UEFI instead of normal BIOS. The problem I have is when I try to install Windows 7 with my motherboards ...
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234 views

3TB Drive doesn't always show up initialized in USB3 Dock

Have a perfectly fine 3TB GPT drive which shows up in most of our machines when direct connected and often in docks. But, we've used it in a few new USB3 docks and sometimes it will show up as ...
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Clonezilla fails clone with mismatched GPT and MBR partition

I got this message: This disk contains mismatched GPT and MBR partition: /dev/sda Clonezilla's FAQ says: You might have installed an OS with GPT partition table, and later overwrite the ...
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How to restore a DriveImage Backup to a GPT-based system drive

I just bought a new laptop and was trying different things on it. I backed up my system partition with DriveImage XML and made a clean install of Windows to test something new. Later, when I tried to ...
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63 views

Debian + 4TB SATA + md RAID - Grub won't install, or if it does, won't boot

I'm trying to get Debian 7.8 amd64 setup on an system (G3220 CPU, mobo is an Asus H81I+) onto which I've installed two 4TB SATA hard drives. I admit I'm not up to snuff on EFI and such. My goal is ...
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What is the difference between boot manager and boot loader in windows ? Can you have multiple hard drives with different boot manager?

What is the difference between boot manager and boot loader in windows ? Can you have multiple hard drives in a computer with each drive with a different boot manager ? I recently put multiple hard ...
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Does each hard drive need EFI\ESP, MSR system partition if you want to install operating system(s) on each drive?

Suppose, there are at least 5 hard drives: drive1, drive2, drive3, drive4, drive5, .... We want to use first 3 drives to install 5 operating system: windows 8.1, windows 7, windows vista, windows xp, ...
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42 views

Only one of my GPT drives is recognized by the BIOS

I have two GPT drives, an SSD and an HDD. My SSD has windows installed, my other HDD does not. My problem is that my BIOS only shows the SSD in boot options, and ignores the HDD. When the SSD is ...
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54 views

Why does UEFI BIOS only identify a 2TB drive on a 25TB virtual drive?

I configure a RAID6 using 16 2TB disks, and finally get a 25TB virtual drive as shown in LSI MegaRAID BIOS. And then I boot via a USB stick and try to install 64bit Ubuntu 14.04 on it. At the ...
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26 views

Boot Linux from a GPT disk using SYSLINUX

From Booting from GPT (rodsbooks.com/gdisk/booting.html), it says that both Grub & syslinux support booting Linux from a GPT disk. Anyone know how exactly can I use syslinux to boot Linux from a ...
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BIOS can't find hard drive - accidentally changed partition table

My hard drive recently crashed after I had to do hard reboot when my computer froze up. I think there was some I/O happening at the time so there are a couple of bad sectors and stuff. After ...
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18 views

What happens on Mac Air booting?

I am trying to install linux on my Mac Air i7 11" Mid-2012. How does booting work on these Macs? I have a GPT partition table, and AFAIK the process looks like this: Look for a partition with ...
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how to properly set up grub2 with uefi on gpt

I've recently installed fedora on new ssd disk. Info: GPT, uefi partitions: (lsblk) NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda ...
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190 views

HDD only visible from Linux, GParted says “unallocated partition”

My Western Digital Caviar Green 3TB HDD suddenly is unrecognized by Windows 7. It's an external My Book drive, but plugging it vía USB from his case is unrecognized by Windows 7 or Linux, so I have to ...
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148 views

Caution: invalid backup GPT Header (gdisk)

Each time I boot into my Ubuntu installation, when I open gdisk I am given the messages: GPT fdisk (gdisk) version 0.8.8 Type device filename, or press <Enter> to exit: /dev/sda Caution: ...
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Need help upgrading OSX to Mavericks: Fix GPT and MBR after installing rEFIt

A while ago I installed Ubuntu using rEFIt on a MacBook, 2.4GHz C2D, 4GB DDR3. Sorry, I don't know the exact model. Anyway, I continued to get errors when trying to upgrade to Mavericks. Eventually, ...
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How can I tell if a Windows 8.1 machine has 'full' UEFI?

I've seen a Windows 8.1 machine that has a MBR format drive and a 'Legacy' BIOS, and it has fancy graphics that look like UEFI. If I have a GPT format drive is it still possible to have the old style ...
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Problems restoring grub

I have used fsarchiver to move the content of my old hard drive on a new bigger SSD. Basically, one partition with Ubuntu 12.04. Everything went fine. But now I can not boot. I used GPT and I also ...
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Trying to restore cloned 1TB HDD to 3TD HDD, no other solutions have worked

So one day my 1TB started to fail, losing many sectors every boot. So I cloned the 1TB hard drive to a 1TB external drive. First problem? The target drive is too small. Fixed that by telling it to ...
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277 views

Restore automatic bootup of Windows 8 in UEFI

My Acer AMD laptop came bundled with Windows 8.0 in UEFI. The state it's in now is that every boot stops at a prompt, and I have to hit ENTER at this screen to continue: How can I make this ...
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122 views

Oops I broke my MBR. What do I do?

Note: I just posted this on the mac stack exchange, but they didn't have tags for MBR or GPT so I thought I might have better luck over here... I installed Mavericks a couple weeks ago and discovered ...
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640 views

Can't recognize 4TB GPT HDD in Windows Explorer

OS: Windows 8 HDD: 4TB WD Green plugged in to a Seagate FreeAgent GoFlex Desk PC: Awesome home rig to Acer Aspire U all-in-one. So this is a pretty weird problem. The drive worked perfectly fine on ...
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Mount GPT Partitioned Drive In Linux

I have a windows 8 hard drive slaved to my Ubuntu box right now and I'm having problems mounting. When I go to mount, the shell tells me that the device doesn't exist but I can bring it up and see the ...
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252 views

How can I preserve a Windows 8 recovery partition if the drive uses GPT?

I have a new Samsung ATIV book 9 with Windows 8 Professional, but I need to downgrade it to Windows 7. I want to keep the option to restore the Windows 8 on there, though. The problem is that the ...
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Installing Windows 7 on Acer Aspire E1 471G

I have been trying to install Windows 7 all day with no success. At first, it said that the current system policy is blocking the DVD. I figured out that it was the Secure Boot and I disabled it. Now ...
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WD 3TB suddenly RAW formatted - but only whith seconardy Win7 install.%

After looking a bit on the web, I decided to take this problem here, in case somebody has already a solution, or to answer it myself, should I find the Answer. Setup is like this: ASUS Maximus V ...
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101 views

Disaster recovery for RAID and mdadm

I´m having a software raid 5 with 5 2TB members. After some work with gparted my RAID doesn´t work any more... How can I check the integrity of each member? What would be my options, if the partition ...
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275 views

3 TB HDD won't reactivate

After doing a clean install of Windows 8 my Seagate 3 TB HDD won't reactivate in Disk Management. The two volumes are there but I can't use them for some reason. The drive was previously used with a ...
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265 views

Why does my 3TB hard disk fail to boot when I switch the controller from AHCI to RAID?

Why does my 3TB hard disk fail to boot when I switch the controller from AHCI to RAID? Something I have noticed: using diskpart while in the command prompt in disk recovery tools it says that the ...
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1k views

ASUS Recovery DVDs does not “INSTALL” windows

My ASUS R500VM has UEFI and GPT scheme disk. Earlier, I tried to resize the default partitions using EaseUS but it failed and couldn't boot anymore. It showed the message that I have to insert the ...
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930 views

How to fix my GPT and MBR (hybrid)?

I was trying to create a triple boot (Ubuntu, OS X and Windows), so I used VirtualBox to install Windows 8 (Consumer Preview) to a real (FAT at the time) partition, so it wouldn't have access to my ...
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Please help GPT/MBR issue bootcamp

I am not a programmer so I am going crazy with something that you may know. I'm trying to install windows in my mac with bootcamp, but it doesn't work. I always receive errors regarding formatting. I ...