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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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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Make UEFI, GPT, Bootloader, SSD, USB, Linux and Windows work together

I like to use the latest hardware and the latest software; thus I have a Laptop (Lenovo X220) with UEFI instead of BIOS an SSD instead of an HDD GPT partitioning scheme instead of MBR USB to boot ...
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716 views

Problems with Windows 7 + Windows Server 2008 R2 multibbot on EFI computer

We have a new computer, and I am a bit confused from its new features I don't know from older hardware. It is a high end PC based on socket 2011. I want to use an SSD disk for operating system, and I ...
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3TB Seagate hard drive shows 249GB free when installed

my new seagate sata drive keeps showing as a 249gb drive but in the setup part when i press del at the boot up it states there a 3000gb drive and i have searched for a solution but havent found one ...
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logical sector size changes depending on whether it is attached via USB or direct SATA

I have a 3TB WD disk (in a My Book Essential external drive.) I used parted under Linux to partition it with a GPT disklabel and loaded it up with data from my laptop through the USB cable. Then I ...
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Seagate 3TB ST3000DM001 hard drive not recognized by Linux, causes fdisk to hang

I'm running Kubuntu 12.04. I have a brand new, never used Seagate 3TB ST3000DM001 hard drive. It's an internal drive. I installed it in a USB enclosure. When I connect it to my PC, nothing happens ...
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Getting rid of a GPT signature without touching MBR [duplicate]

Possible Duplicate: GParted errors on MBR Disk, Claims it's GPT. (It's mistaken, but why?) I have a disk that seems to contain both an MBR and a GPT. When trying to access the ...
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1answer
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Windows cannot install to GPT?

I have installed Ubuntu 11.10 x64 onto a 500GB SATA (Seagate Barracuda ES.2) drive. I have downloaded Windows 8 Developer preview x64 onto a USB stick and I can't install it on a NTFS partition I ...
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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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Easiest way to use a > 2TB internal hard disk in Windows XP 32-bit?

I have an 3TB external disk and Windows XP 32 bit. It works as a USB 2 disk with its enclosure, but I want to use it as an internal SATA disk. I don't want to use it as a boot disk, only as a data ...
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Can't intall Win 7 64Bit. Something about GPT disk

I've got Asrock Z68 Extreme 3 Gen 3 with 2600k. It got the UEFI bios. I got 4 HDDs and I run them as AHCI setup. Now, I want to install Win7 64Bit over my Win7 32Bit. I boot up from the DVD, all goes ...
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How can I format a drive using the GPT format on OS X?

How can I format a drive using the GPT format on OS X? I don't see this option in Disk Tools.
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Is there any way to boot Windows 7/8 using BIOS on GPT?

I'd like to know if there's a method to get Windows 7 or Windows 8 Developer Preview to install to a GPT disk on my traditional IBM PC BIOS setup. Windows 7, of course, rejects my GPT partition, ...
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3answers
9k views

Cannot use more than 746GB on 3TB Drive that is reporting 2TB free

Related: Tried to use my 3TB drive in a USB enclosure, now reports only 746GB even internally I originally solved the problem in the link above by deleting the partition table using GParted ...
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1answer
415 views

Accidently put BtrFS on plain device - how to revert?

On a fresh hard disk, I created a GPT partition table with three partitions: /dev/sdd1 256M for /boot /dev/sdd2 8G for swap /dev/sdd3 ~1T for / Then, I accidently formatted the raw device ...
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Accessing 3TB Seagate Barracuda XT on different computer?

I have a 3000 GB Seagate Barracuda XT sata drive. It originally came in an external enclosure with a removable USB 3.0 interface as part of the Seagate GoFlex series of drives. When using this ...
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How to write to both GPT and MBR manually?

I have a big deal here. I have a MacBook with three partitions: HFS partition for Mac OS X 10.6 NTFS partition for Windows 7 64-Bit NTFS partition for my documents It thus works with both GPT and ...
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1answer
426 views

Move from MBR partition to GPT partition — can't boot

I'm trying to install Funtoo/Gentoo on my desktop. I have the GPT partition table set up and I can boot the kernel. However I keep getting an error: /dev/sdb3 is not a valid block device I'm ...
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What are the differences between MBR vs GPT vs any other partition scheme?

Can anyone tell me what the main differences between i.e. MBR vs GPT or any other partition scheme are? Why would one choose one over the other? I am not an expert but from new release of Mac OS X ...
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1answer
30k views

How to install Windows 7 x64 on GPT?

How can I install Windows 7 x64 on GUID partition table? My motherboard has UEFI. I tried using Ubuntu to create the GPT and NTFS partition on it, but Windows 7 just says Windows cannot be ...
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GUID/GPT Partition scheme: OS X + Windows

I always used Linux (Ubuntu) in a dual boot configuration with Windows (using Grub). Having Windows on your computer is always handy. I bought a MacBook Pro 8.1 last week. OS X is amazing. I followed ...
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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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How to recover data from a GPT protective partition?

Can I get IMAC data back from a WD1600SJ HDD which shows as GPT protective partition in Disk Management?
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1answer
311 views

Re-installing Windows on MacBook Pro

I have triple boot installed. Everything works smoothly, but Windows is crying for re-install (overfilled registry, too many programs installed). Before MacBook Pro I would typically create another ...
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NTFS partition no longer read on Windows 7

I have a 500 GB external drive that I use with my Windows 7 PC and Snow Leopard laptop. It has the following 4 partitions: 1. Leopard Installer (HFS+) 2. Backup (HFS+) 3. Snow Leopard Installer ...
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Windows on a hybrid MBR/GPT

I thought I'd finally relegated Windows to life inside a virtual machine, but alas, I came across some games I'd like to play that just won't do in that setup. In the days since Windows last occupied ...
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Is GPT aligned for 4k blocks?

The Wikipedia article for GUID Partition Table does not make it clear whether it is aligned to an underlying 4k-block filesystem. Seeing as the diagram shows the first block of the data sector as ...
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GParted errors on MBR Disk, Claims it's GPT. (It's mistaken, but why?)

It's very tempting for me to go on a rant here about GParted and Linux, but I'll do my best to avoid it. :) Question: Why does GParted claim that my disk is corrupted and GPT, whereas the Disk ...
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2answers
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Update MAC EFI to EFI 2.x

I've been doing a lot of research about installing Windows on Mac - without having a MBR and such. I'm trying to create a pure GPT/EFI system without MBR. Currently, Mac Bootcamp creates a hybrid ...
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1answer
565 views

Windows 7 NON-Boot 6TB array results in a limited, 2048GB “disk”

Greetings, I have Windows 7 using an LSI 3Ware 9650SE-8LPML with 4 of the WD Green 2TB drives. I've done a bunch of reading on this; I'm not using it as a boot, and the array has no data; it can be ...
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Tried to use my 3TB drive in a USB enclosure, now reports only 746GB even internally

I have two 3TB Hitachi 5k3000 Desktar drives that I want to use as data drives, not boot drives. When I was originally trying to install them I wanted to mirror them using my hardware raid but I ...
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1answer
245 views

Boot utilities for 3 TB hard drives

What hard disk/partitioning/GPT/cloning/etc. utilities are there to have on a bootable USB drive or CD/DVD, that can work with NTFS and other file systems, on hard drives greater than 2.1 TB?
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822 views

Quad-booting a Macbook Pro?

I know that it is possible to tri-boot a Macbook Pro with OS X, Windows, and Linux, giving each OS one partition. However (and I know I am probably a little crazy for suggesting this), is it possible ...
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4k views

Change partition map type without data loss

I have en external HD that I use with OS X. When I bought it, it was formatted for Windows (NTFS). I deleted the NTFS partition and created a new HFS+ partition. Then I copied 500 GB of material over. ...
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1answer
440 views

Missing MB on a GPT partioned SSD

I recently installed Arch Linux on an Intel 40GB SSD. I used GPT for partioning (via GNU parted) and created the following partions: /dev/sda1 : 1 MB, no FS, flag=bios_grub /dev/sda2 : 30MB, /boot, ...
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1answer
3k views

More than 4 primary partitions on MacBook with rEFIt (GPT/MBR syncing)?

I currently have a triple-boot on my MacBook (OS X 10.6.5, Windows 7, Ubuntu 10.10) which works very well. I'd like to now make an ExFAT storage partition that would be shared amongst the three OS's, ...
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1answer
934 views

Windows 7 can't find my GPT drive

I added a new 2TB drive to my system yesterday. I'm running Windows 7 32-bit. After booting up, Windows formatted the drive and suggested I format with GPT. I said yes, the format went fine, and a ...
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2TB external drive, disk initialization: MBR or GPT

I just bought a new 2TB disk drive I plan to use as an external drive (connected via eSATA). When I started my computer it recognized the drive fine, but when I got into the Disk Management, a popup ...
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759 views

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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Intel Mac can't have more than 4 partitions?

I've read everywhere that you can't have more than 4 partitions because of GPT on intel Macs. But what happens if you make more than 4? On my iMac I have EFI, Macintosh HD, Windows, Linux, and Linux ...
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Seeking (somewhat) better explanations about supporting >2 TB hard drives

Today while Googling about I stumbled across posts claiming that Seagate plans to ship a 3TB drive sometime later in 2010. Unfortunately, the stuff I looked at all seemed to contain tidbits of info ...
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417 views

GPT Partitioning help!

I have a GPT partitioned portable HDD which is not being detected by Windows XP and a non working CD Drive.Can I download and use Ubuntu to boot from and access the data? Or is there some other way?
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Can a hard drive using a GPT partition table be booted in an AMD computer? [closed]

I have a 64-bit AMD Phenom II and I'm installing a new hard drive on it. One of the options when formatting the drive is to use a GPT partition table instead of an MBR. I read somewhere that only ...
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OS X 10.6 Snow Leopard no longer mounting an external USB drive

I have a 1TB generic external hard drive containing a single HFS partition. I originally formatted this using Disk Utility and it worked fine. Now, for some reason, it's not auto-mounting when I start ...
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Convert a GPT disk to MBR from XP

So I took some files with me on my external HDD while going on vacation. Through a series of events, I ended up storing the data in a NTFS formatted partition defined in a GUID Partition Table. The ...