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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Install Windows 7 after Ubuntu: Cannot install because of GPT partition

I'm trying to install Windows 7 on a NTFS partition after installing Ubuntu 14.04. But it says that I'm using a GPT partition. The solution I found was to erase everything, then install Windows 7 then ...
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22 views

Remove GPT filesystem on USB

I have an old 8GB USB stick with a GPT filesystem hanging around. I'd like to move it to a more familiar fs, as NTFS or FAT32, but the usual mkfs doesn't seem to work since there is no /dev/sdb1 (as ...
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18 views

Windows 8.1 upgrade blew out other OSes on GPT disks?

I was multibooting an EFI laptop. The laptop was using GPTs, and it had Windows 8.0, Ubuntu, Fedora and Debian on it. I updated the laptop to Windows 8.1 through the free App Store update because I ...
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44 views

Windows 7x64 pro formatting of ST6000NM0024 6tb drive

I'm wondering if anyone is having success installing one of these drives into a Windows 7 Pro x64 system. I'm able to: attach the drive see it in my BIOS boot Windows, bring up the Disk Management ...
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83 views

GParted leaves 1MB unallocated space at end of external HDD, override/alternative?

I only say external HD, I don’t have this issue with internal HDs. I created a GPT table, then made one NTFS volume. It shows 1MB unallocated at end of disk. I know it is a backup of the GPT table, ...
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24 views

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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30 views

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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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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44 views

How do I migrate a single drive (no RAID) running under RAID controller, to AHCI mode without losing the GPT partition on it?

I have a 3 TB drive formatted with the GPT partition style. I use it for data on my Windows 7 PC. I've made the drive accessible via the mount point D: My motherboard's HDD controller mode has been ...
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22 views

Unable to automatically select USB stick in BIOS for boot

This is a weird one: I would like to automatically boot my home server from USB (having recently installed ESXi on a USB drive), but the USB drive does not show up in the boot priority section of my ...
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25 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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How to make a UEFI partition explained [closed]

I have a samsung np300ex, in the bios i have enable UEFI running Archlinux (3.17.2-1-ARCH #1 SMP PREEMPT Thu Oct 30 20:49:39 CET 2014 x86_64 GNU/Linux) i'm using syslinux as bootloader. I've never ...
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33 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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16 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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93 views

install windows 8 in GPT style hard disk

I have an Acer Aspire E15 laptop, of my friend, in which I have been trying to install Windows 8 but I am unable to do so. It has 4 partitions: Partition 1: total: 900MB - free: 900MB - type: Primary ...
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124 views

Windows ignores GPT disk and converts to MBR during installation

I have followed these steps to install windows 7 home premium x64 on a 3tb drive (asus z87-z motherboard): Windows Setup: Installing using the MBR (Master boot record) or GPT (GUID Partition Table) ...
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21 views

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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43 views

Is it possible to have one MBR partition and one GPT partition on the same drive?

I would like to use one hard drive on an older computer that doesn't support UEFI, and have it boot from an MBR partition, while having another GPT partition which would be used to boot another ...
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38 views

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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107 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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110 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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386 views

3TB Western Digital green showing as only 746GB in disk management?

I've just purchased a new hard drive (3TB Western Digital Green) with the intention of transferring everything from my hard drive that has sector issues and is causing BSODs. The problem is, the new ...
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329 views

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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221 views

Initializing external 1TB hard disk with MBR option

I have an 1TB WD my passport hard disk(HD). I connected that HD to my laptop this morning and it didn't show in My Computer. After trying for several times, I went to disk management, and as soon as ...
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49 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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28 views

How to restore GPT backup on Linux?

Today, I've encountered a problem when trying to install Windows7 on my new laptop. The installer claimed that Windows couldn't be installed on a GPT drive, so I tried to turn the partition table into ...
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129 views

Converted existing win7 instalation from mbr to gpt using gdisk, can't lauch OS

I have existing win7 instalation which I just moved to 3 tb disc via clonezilla (2tb partition). I wish to extend that partition so I can use all 3 tb of disc space. I've read that because it's ...
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36 views

GPT damaged, two half-sized disks instead of one

I'm trying to help my father installing Gentoo instead of Windows on his new Acer Aspire S7 notebook. However, we are experiencing issues to partition the 120GB SSD disk. fdisk -l tells us we have ...
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624 views

GPT Protective Partition

I’ve moved my 3TB hard drive to another USB enclosure, and it no longer works. Disk manager says “2794.52 GB Healthy (GPT Protective Partition)”. How to fix that? I don’t want to reformat, I need ...
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113 views

Can I still use a GPT secondary hard drive if I converted it to MBR

I'm owner of an MSI GT60 laptop with preinstalled Windows 8. The W8 OS is installed on an 128GB SSD (C:) GPT format. There is a secondary 600GB DATA hard drive (D:) GPT format. My goal is to install ...
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I Initialized my HDD to MBR? Can I recover the data ? (Note.. I just intialized, nothing else.) [duplicate]

I had an HDD in my Laptop. I connected that HDD to some other laptop via USBtoSATA bridge and it dint show in My Computer. After trying for several times, I went to disk management, and as soon as it ...
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52 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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1k views

Why can't I install Windows 8 on an UEFI machine from an MBR based USB disk?

Just tried to install Windows 8.1 on an UEFI machine/GPT disk. I used a 2 TB MBR-based USB drive to contain the installer (FAT32 partition with Windows 8.1 install files). I got as far as selecting a ...
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41 views

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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68 views

Can't install Win 8.1 to my new Dell I5 computer

i just got a new dell I5 computer with on Operating system inside, i tried to install win 8.1 as the manual said but when i got to the Hard drive i got the message "windows cannot be installed on this ...
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94 views

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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622 views

How to partition hard drive from MBR to GPT for Windows 8.1 UEFI install

I just bought a new HP notebook (ProBook 450 G0) and it came preinstalled with Suse 11 Enterprise. Now this is the first time I've owned a system with an (U)EFI and I don't know how things work on ...
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81 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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70 views

These partitions are properly aligned?

Scenario: BIOS computer (Not EFI) HDD with GPT partition table I'm trying to follow these instrutions: https://wiki.archlinux.org/index.php/GRUB#GUID_Partition_Table_.28GPT.29_specific_instructions ...
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30 views

My disk at half size after formatting

I'm a long time linux user, I'm also a Windows user, after formatting my brand new USB dongle I get ~30Gb from the partition table available to create a new partition where the nominal capacity of the ...
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286 views

Is it possible to recover data after disk' gpt to mbr conversion?

I tried to install windows that requires mbr system to a gpt system. I converted gpt to mbr using diskpart utility. After it all my logical disks disappeared and only one (with total amount of space) ...
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new windows 8.1 alongside with linux

I have pretty serious problem while installing any linux alongside windows 8.1. While trying to install, linux showing that my disk is empty, despite that i just installed windows a moment ago. Same ...
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139 views

What are those empty partitions on my UEFI/GPT partitioned disk for?

I'd like to know what's with all those unnamed partitions. I've always thought they are what they say they are (recoveries and what not), why are there so many of them? And why do they all say 100% ...
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672 views

Cloning Windows 7 installation from MBR to GPT drive and make it bootable

I've seen threads on similar topics - such as this one - but the answers never seem to solve how to make it bootable. I have Win 7 64-bit on a PC installed on a 2tb MBR volume. The motherboard is ...
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262 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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2k views

cant install windows 7 or 8.1 . The selected disk is of the GPT partition style

I can't install Windows 7 or Windows 8.1 so that I won't lose my data on 2nd disk. Any way to back up the data? or install Windows without formating 2nd disk?
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253 views

Recreate MacBook Pro's overwritten GPT partition table

Already, neither Testdisk not GParted's rescue option have been able to recover the original partitions, so I think I have to recreate them manually. I'm on a late 2011 MacBook Pro with the stock ...
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4k views

Windows 8.1 installation from USB after deleting Windows Boot Manager in BIOS/UEFI

I removed Windows Boot Manager option from BIOS (UEFI) with EasyUEFI, after reboot I got an error message about broken BCD, need to be recovered, I tried to reinstall Windows 8.1.1 Pro X64 from USB ...