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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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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38 views

UEFI with MBR partition table?

i want to convert current GPT partition table to MBR. But my laptop has UEFI, so is it safe UEFI with MBR partition table? or maybe i am misunderstanding about UEFI/GPT things?
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grub2-bios-setup: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible

Grub2 won't install on a hdd with GPT partition label (without --force), complaining about a missing BIOS boot partion - even though there is one. The first partition (1 MB) is supposed to be used as ...
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2answers
36 views

Installing a 3TB drives on Debian

I am using an internal hard drive USB adapter to mount backup drives. The adapter was working well with my previous 1GB backup drives. We just got two new 3TB hard drives. We connected it with the ...
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2answers
97 views

Partitions on GPT disk are not in the recommended order?

I want to install a clean RTM Windows 8.0 on a laptop that came with OEM Windows 8.0 pre-installed. I have a working ISO image on DVD. The problem is that the setup program complains about ...
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79 views

Linux tools that can partition GPT with proper alignment

Proper partition alignment ensures ideal performance during data access. Incorrect partition alignment will cause reduced performance, especially with regard to SSDs (with an internal page size of ...
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29 views

Automount NTFS partition with EFI/GPT

I have a multiboot laptop with EFI and GPTs. One drive is a shared drive formatted with NTFS. I was going to automount it at boot by modifying bits in /etc/fstab. However: # <file system> ...
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120 views

windows cannot be installed on this disk. The selected disk is of the GPT partition style. Windows 8.1

I have a ASUS R500A notebook.Original OS is Windows 7 64bit.Few days ago I tried to Install Windows 8.1 64 bit version.But it failed & error message is, windows cannot be installed on this ...
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Purpose and function of GPT backup partition tables

GPT spec says that in addition to the main partition table there are 2 backups. Under what conditions are they updated, and how may they be restored?
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67 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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41 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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41 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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1answer
36 views

How can I edit a file on a GPT partition, SLAX linux

I have installed ESXi v5.5 on a white box and need to insert a particular parameter into the boot.cfg file. I created a bootable USB drive (SLAX Linux) and can see the device /dev/sda, but can't mount ...
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50 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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1answer
46 views

Removable disk, hybrid GPT/MBR

I'm trying to set up a USB HD with GPT so that partition 1 is accessible under all versions of Windows. Sounds easy, right? (In particular, I'm not trying to boot Windows. I just want to plug in a ...
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21 views

Default Mac 500GB partitions

I am trying repair hosed partitions on a Macbook. It has a 500 GB drive and as far as I know, it was a standard install with no Bootcamp. I ran testdisk and it found: EFI System 40 409639 Mac HFS ...
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463 views

EFI GPT Windows 7 boot-loader/manager issue and grub

My computer(asus N76VM 64 bit) with windows 7 (64 bit home professional) pre-installed got in a bad state while partitioning from a later installed Ubuntu environment. This had lead me to run testdisk ...
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54 views

Out of Band Disk Partitioning and Tables [closed]

Our current methods of disk partitioning involve storing the partition layout on the disk itself, right along with the data. It's easy to screw up the data in a disk : just wipe out the partition ...
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191 views

Can't install Windows 8 on a UEFI with GPT laptop?

I had Windows 8 (Single language) pre-installed on my new laptop ... and it has lags..i tried to make refresh or reset and it told me that (The driver is locked) So i managed to make a clean install ...
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52 views

dual boot preinstalled windows 8 laptop with windows 7

I am having a hard disk in gpt partition style and windows 8 is preinstalled in uefi mode. while trying to dual boot using usb bootable disk(using rufus,gpt partition style,fat32),it displays ...
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3answers
254 views

Can only see 1.6 tb with an 4 x 4tb raid 0

Im trying to have window see my raid 0 array. Please also note that I did research on google before coming on here. Ok so i just bought a z87-deluxe Dual and trying to set 4 x 4tb drive in a raid 0 ...
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117 views

Fix GPT on Win7

I have a GPT partitioned HDD which isn't recoqnized by windows. The disk management shows the entire disk as unallocated. I am 100% sure that the partitions and their file systems are undamaged. ...
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23 views

How to convert MBR disk to GPT disk on Windows XP? [duplicate]

My new harddrive is larger than 2TB, and for some reasons I have to convert it to GPT disk so I can use all the space. How can I convert my WD Red 3TB into GPT disk so I can use all its capacity? I ...
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138 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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214 views

what is difference between gpt partition and mbr partition and where structure differs?

Where GPT table using and MBR partition table using. Windows 8 installing and booting in UEFI mode so it is supporting GPT partition style so we can create 128 primary partitions using windows8? can ...
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25 views

When partitioning devices for zfsonlinux, what is the correct “Partition type GUID” to use, or is this important at all?

I want to use zfsonlinux on a Debian system. Since I have advanced format drives and will employ LUKS, I have to partition the device by hand. A forum entry at archlinux.org points out that the ...
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68 views

Why can't CDs/DVDs be partitioned?

Nearly everywhere it's written that it's not possible.. But why? Why can't I dump a GPT/MBR partition table in the first sector? Basically dump a disk layout with sector size 2048... Now I'm sure ...
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213 views

Change ZFS disk references to use GPTID instead of GEOM name?

I've built a FreeNAS rig on a sweet little HP ProLiant MicroServer. Storage wise, I've created a 3 disk ZFS pool using RAIDZ1. I started out with 3 small disks, while getting familiar with FreeNAS, ...
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47 views

Reinstall OEM copy of windows 8 as mbr?

Currently the system is using UEFI with a gpt partitioning table, running windows 8. I was wondering whether there is any way to reinstall windows 8 (I have made recovery disks) in such a fashion ...
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2answers
131 views

How do I convert a MBR disk containing a Windows boot partition to a GPT disk while leaving the boot partition bootable?

I have an existing Windows 7 64-bit boot partition on a 3 TB hard drive, which is an MBR disk. My BIOS is definitely a UEFI BIOS. The motherboard is a Asrock Z77E-ITX (see ...
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628 views

Installing Windows Server 2012 with a 4TB Hard Drive giving me GTP Error + deceted as 2TB

I'm trying to install Windows Server 2012 for a new NAS/Backup build. The primary error is Windows only detecting 2.2TB at install out of 4TB. I have plugged the HDD into another computer and ...
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525 views

USB hard drive moved to internal, now shows GPT Protective Partition

I'm using Windows 8.1. Using a brand new 1TB hard drive, I attached it to a SATA to USB connector, formatted it and transferred about 500GB of data to it. I don't remember if I formatted it as GPT, I ...
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217 views

Installing Win 7 To GPT and Why My UEFI Mobo Won't Boot From CD Unless In Legacy Mode

Double whammy question comin' at ya: Firstly, my UEFI bios on my Acer laptop absolutely refuses to boot from CD/DVD unless I revert to legacy mode. Disabling secure boot and leaving UEFI enabled ...
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185 views

Installing windows server 2008 on SSD with GPT and EFI

I recently purchased a new Samsung 840 EVO with a few other components, to rebuild a machine that has been on the verge of extinction. With the SSD purchase, I also purchased a new motherboard from ...
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Why does the boot partition under a BIOS-GPT configuration need to be 1007KiB?

Reference: https://wiki.archlinux.org/index.php/GRUB#GUID_Partition_Table_.28GPT.29_specific_instructions Other sources may refer 1MiB for it, but I'm really curious about this Magic Number. Why not ...
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438 views

Accessing CentOS installation

I use an SSD as my boot device, and I have a HDD that I use for data. Both drives are set up using GPT/UEFI. I installed CentOS to its own partition on the HDD, and I have Windows 8.1 installed to the ...
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747 views

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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4k views

Partition Issue with Windows 8.1 Installation

I bought a brand new machine and I wanted to install Windows 8.1 on a single 4TB HDD. I want to partition the drive using the following layout: Drive 0 Partition 1: System Reserved - whatever the ...
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1answer
1k views

Can't boot FreeBSD 10 after install on UEFI + GPT

I have tried to install FreeBSD on Asus G75VW. Setup will partition the disk, install everything. At reboot I see this: "Reboot and select proper boot device" "or Insert Boot Media in selected boot ...
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3answers
7k views

Clean install of Windows 7 Pro 64-bit on a UEFI with GPT laptop?

I’m currently pulling out hairs about a problem with my wife’s new Samsung Book 9 laptop. it comes preinstalled with Windows 8. She wants Windows 7 Pro. I’ve board a Windows 7 Pro 64-bit for her and ...
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1answer
81 views

What GPT partition type to use for protecting DRBD metadata?

I'm planning to install a DRBD device on a (replicated) disk with two GPT partitions. DRBD requires some space for (preferentially "internal") metadata at the end of the underlying device. I'm ...
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181 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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1answer
388 views

RAID 0 partitioning for Linux installation

I have recently bought ASUS Zenbook UX32VD with 128Gb SSD, which seems to be RAID-0 made from two 64Gb SSD drives. It has Windows 8 preinstalled. I want to install Arch Linux on it, while keeping ...
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138 views

Is it safe to purge EFI from a laptop?

My laptop is a Dell Latitude E5430 that supports both EFI and "legacy" boot modes. I'd like to removed win8 and it's troublesome EFI stuff and replace it with a Win7. I'd like to keep my ubuntu ...
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435 views

I (stupidly) converted a TrueCrypt encrypted disk to GPT in Disk Management: now TrueCrypt won't mount it

Backstory: After moving a Macrium Reflect disk image from my TrueCrypt external drive (with whole disk encryption) onto a unencrypted drive and using Windows PE with Macrium Reflect to restore my ...
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2answers
252 views

Small unallocated space left, when partitioning harddrive. What is is meant for and why can't I use it?

Every so often I encounter a small unallocated space in the partitioning scheme of a hard drive, when I want to create a maximal sized partition, even though I have set the "Free space following" to ...
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4answers
1k views

Live resize of a GPT partition on Linux

On Linux I used to resize MBR partitions using fdisk, even on live filesystems, and then issue a resize2fs/pvresize/... (depending on fs type) to get the new space allocated. Lately I've been using ...
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3answers
1k views

Can I recover my 4TB SATA HDD accidentally re-initialized with MBR?

I changed my 4TB SATA HDD to a different 3.5 inch USB enclosure. When plugging the new enclosure's USB cable into my Windows 7 x64 PC, in the Disk Management MMC, it asked to be initialized with MBR, ...
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969 views

GPT disk partition recovery

I am having troubles getting my partitions to show up correctly on one of my drives. Setup: Linux 3.10.10-1-ARCH Disk is 2TB and has GPT with two partitions. The two partitions hold approx 700GB ...
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421 views

Convert GPT disk to MBR disk in-place?

Is there any tool that can reliably convert a disk from GPT to MBR in-place? (i.e. without having to backup/restore any partitions.)