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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My new Intel X25-M G2 and the alignment thingy

I just bought a new SSD for my laptop, which is going to be a server running ArchLinux with grub2, GPT and btrfs. My layout should look like this: (grub-partition?) /boot ext2 75MB / btrfs ...
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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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How to create hybrid MBR/GPT partition on USB drive?

Can you please tell me how to create a hybrid MBR/GPT partition on the USB drive? I need the MBR for the boot as my BIOS doesn't boot GPT partitions.
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Can't install Windows 7 with UEFI off on GPT drive

I need to have a dual boot with Ubuntu and Windows 7 on my notebook with UEFI. I had to turn UEFI off to install and boot Ubuntu. Now I'm trying to install Windows 7, but it says it can't be ...
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2k views

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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1answer
1k 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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1answer
789 views

4k hard drives freebsd gpart and zfs

I have 3 hdd, with the next camcotrol identify. root@cirmos:/root # camcontrol identify ada1 pass2: <WDC WD10EZEX-00RKKA0 80.00A80> ATA-8 SATA 3.x device pass2: 300.000MB/s transfers (SATA 2.x, ...
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1answer
132 views

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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372 views

real number of sectors on HDD

This is part of output of fdisk -l Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector ...
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326 views

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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1answer
380 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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1answer
998 views

How do I install Windows 8 using a GPT Partition scheme?

This question seems to have been asked in very similar form in the past, but I was unable to find a relevant answer her or elsewhere. I am ultimately looking to install a dual boot of x64 Windows 8 ...
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1answer
933 views

Repairing Boot Camp on a secondary hard drive

I managed to install Windows on a partition of a secondary hard drive with Winclone, but I am unable to boot on it. Now when i choose windows as startup device i get the "No bootable device --- insert ...
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1answer
375 views

Data recovery after conversion from MBR to GPT

I have following situation: by accident I run diskpart clean, then convert to GPT against NTFS MBR disk to which I previously backed up all my data... No other actions were performed with this disk so ...
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1answer
31 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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1answer
300 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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1answer
380 views

Windows 8 preinstall downgrade to Win 7: UEFI problems :/

I have a friend who has a HP Laptop with UEFI booting. Due to some unfortunate human error resulting in an unbootable system, I suggested and he agreed to installing Win7 ("I hate the big tile ...
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1answer
1k views

Migrating Windows 7 from MBR to EFI without formatting

Based on the experience documented in Migrate from MBR to UEFI with an encrypted system partition I'm considering the opportunity to migrate Windows 7 from the plain ol' MBR to the new GPT/UEFI boot ...
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1answer
66 views

on a server does master boot record formating of the disk support the dynamic disk type?

If I convert a disk from basic to dynamic is it possible to format it to master boot record (MBR) or is it just possible to format with GPT?
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202 views

Deleted the GPT partition/ record

A friend of mine had GPT partition n his Lenovo laptop. While formatting the computer and reinstalling the OS, I wiped of all the partitions, and created 4 new partitions. Now after installing ...
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1answer
481 views

How to add unallocated space to a logical volume? using LVM

This is how my 2 TB (GPT) hard disk looks like sda1 1 MiB Bios_boot sda2 1024 GB LVM --- vg1 1024 GB --- lv1 24 GB ext4 lv2 1000 GB ext4 800 GB ...
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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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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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976 views

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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113 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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105 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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84 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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233 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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3k views

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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202 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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224 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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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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79 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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86 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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71 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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78 views

dual boot preinstalled windows 8 laptop with windows 7

I am having a hard disk in gpt partition style and Windows 8 is pre-installed in uefi mode. While trying to dual boot using usb bootable disk(using rufus,gpt partition style,fat32),it displays ...
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471 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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63 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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1k 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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218 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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43 views

windows drive is shown as free space whie installing ubuntu

My problem is I have this Lenovo G580 with default OS as Ubuntu. I formatted this recently to freshly install Windows 8 and Ubuntu. Windows 8 is installed and when I run Ubuntu live usb, at the ...
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Logic board on my MacBook Pro failed — Now GPT table missing on its HDD

So about a week ago, my logic board went out on my Macbook Pro (early 2011 unibody). So that was a bummer but the real kicker is that when I removed the HDD and tried to boot the drive externally from ...
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82 views

What does `sudo efibootmgr --gpt` do?

The manpage says: -g | --gpt Force disk with invalid PMBR to be treated as GPT But does this option make my computer treat all disks with invalid PMBRs as GPT, or only one, and how do I ...
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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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652 views

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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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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229 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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252 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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860 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 ...