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.

learn more… | top users | synonyms

2
votes
3answers
245 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 ...
2
votes
1answer
5k views

Samsung SSD 840 Pro not properly recognized in bios?

I recently purchased a Samsung ATIV Book 6 laptop, and swapped out the hard drive for a Samsung SSD 840 PRO Series (512 GB). Unfortunately, I can't seem to boot off of it. On the main BIOS screen, ...
2
votes
4answers
2k views

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 ...
2
votes
1answer
466 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 ...
2
votes
2answers
705 views

How to change active boot partition of Windows 8.1 UEFI?

I've a 64 bit Windows 8.1 on GPT / UEFI and am trying to boot to another OS without a CD-ROM or external harddisk. I've created a fresh partition (Z:) and copied Puppy Linux.iso over to it. However, ...
2
votes
2answers
12k 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 ...
2
votes
2answers
3k views

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 ...
2
votes
3answers
128 views

Can Windows 8 and 7 be installed on the same UEFI computer?

My system has UEFI, and I want to install both Windows 7 and 8 on a large drive formatted for GPT (I want to also install a few other operating systems, and I need more than 7 partitions). After ...
2
votes
2answers
12k views

How to install Windows on GPT disk without UEFI BIOS? [duplicate]

My PC does not support UEFI BIOS, but it has Legacy BIOS. The motherboard is "P5LD2-X1333". I need to install Windows 8 on the 3TB hard drive with GPT scheme, since as we know, the MBR scheme does ...
2
votes
1answer
351 views

MBR partition with more than 2 TB

Various sources (e.g. 1, 2, 3, 4) claim that hard drives using the MBR partitioning scheme are limited to a maximum partition size of approximately 2 TB, and that you need GPT to support larger ...
2
votes
1answer
2k views

Unable to Boot Windows 7 after GPT/RAID migration

I recently did a migration off of a single hard disk to a RAID array. I backed up my partitions with Clonezilla and everything worked fine. I was able to then restore both my Windows 7 Bootloader and ...
2
votes
1answer
102 views

Why there is a partition type in GUID Partition Table?

Why there is a partition type in GUID Partition Table? What are they using for?
2
votes
1answer
903 views

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 ...
2
votes
1answer
2k 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 ...
2
votes
2answers
2k 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, ...
2
votes
2answers
943 views

Erase MBR from a Mac

So I found a way to EFI install my Windows 8 to my MacBook Air - and now my partition table looks kinda ugly: /dev/disk0 #: TYPE NAME SIZE IDENTIFIER ...
2
votes
2answers
832 views

Factory 2TB GPT disk with 16GB in unused partitions. Is this right?

I just received 4 SATA II Seagate Barracuda 2TB drives that I intend to use for various purposes. Looking at Vista's Disk Management utility I find that all 4 drives come from the factory as GPT disks ...
2
votes
3answers
6k views

Switch Windows 8 from a hybrid MBR/GPT => GPT only on Macbook Pro Retina

I used DiskUtility+Bootcamp Wizard to setup my hard drive for Windows 8 (final MSDN). Somewhere in that process, the Apple tools turned my GPT disk into a hybrid MBR/GPT. All four of my MBR's primary ...
2
votes
2answers
1k views

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 ...
2
votes
1answer
321 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 ...
2
votes
2answers
2k views

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 ...
2
votes
1answer
723 views

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

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 deleted and ...
2
votes
1answer
6k views

Windows 10 Tech Preview error: “Windows cannot be installed on MBR disks”. My hard drive is GPT. Why am I getting this error?

I'm trying to install the Windows 10 Technical Preview from a USB drive. The hard drive I'm trying to install on has multiple partitions and is formatted with a GPT partition table. When I start up ...
2
votes
2answers
2k 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 ...
2
votes
1answer
5k 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 ...
2
votes
2answers
7k views

Recover NTFS partition GPT with TestDisk, gdisk, EasyRecovery

I have broken my hdd file struture. I will not go into details how that happened. I had several NTFS partitions which have some data I need, and it was in GPT. I tried several applications for ...
2
votes
2answers
904 views

Windows 7 GPT to MBR? EFI to BIOS

I want to convert my existing GPT partition table to a MBR one. UEFI is giving me too many headaches with Linux. Actually, I'm just interested in my Windows partition. All the articles on the ...
2
votes
1answer
248 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?
2
votes
0answers
13 views

GPT disk created in Windows 7 not properly recognised by Windows 10

I have an internal 3 terabyte WD Black disk that was set up as GPT (presumably?) and formatted with one NTFS partition spanning the entire disk under Windows 7. After upgrading to Windows 10, the ...
2
votes
0answers
191 views

Windows 8.1 freeze on startup - Dell Inspiron 15 (7537)

I have a huge problem. (Sorry for my english) The day befoe yesterday I had a Dell Update shown up on my taskbar, I approved it, it ran, and after that I could not turn my laptop on. When I try to ...
2
votes
2answers
108 views

Can't see Linux fdisk created GPT disk partitions in Windows 7 (64-bit)

I just added 2 new disks (only for data, no OS booting) and had them set up equally with GPT and equal partitions, to use the partitions as RAID1 in Arch Linux, and the rest of the storage for ...
2
votes
1answer
73 views

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 ...
2
votes
4answers
4k 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 ...
2
votes
2answers
3k views

Installing Windows 7/8 64-bit on GPT partition table without UEFI [duplicate]

I'll start by saying I tried everything I found. And still nothing worked. Preface I've converted my old MBR to GPT partition table. I actually thought I'll just have to reinstall GRUB2 and ...
2
votes
1answer
201 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: ...
2
votes
2answers
894 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 ...
2
votes
1answer
1k views

What does the Boot Camp Assistant do to my drive that I can't just do with Disk Utility?

What I understand is that Windows 7 will not install on GPT (GUID Partition Table) drives. Of course, all new Macs have their drives partitioned that way, and when you run the boot camp assistant, it ...
2
votes
0answers
143 views

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 ...
1
vote
1answer
1k 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) ...
1
vote
2answers
450 views

Is uefi required to boot from a GPT sdd?

I've spent the past day trying to get GPT to work with my installation/mobo. I have a GA-990FXA-UD3 rev1.0 motherboard, and I'm trying to install ubuntu over two drives, an SSD and a HDD with the ...
1
vote
1answer
710 views

Is the EFI partition and GPT necessary with less than 2 TiB?

I have a 1 TB external USB hard drive that is GUID partitioned with a 100MB FAT32 EFI partition. The thing is that its a 1 terabyte drive. From what I'm aware, the limit is at 2 tebibytes (TiB). ...
1
vote
3answers
2k views

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

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 ...
1
vote
1answer
8k views

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 ...
1
vote
2answers
296 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 ...
1
vote
2answers
991 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 ...
1
vote
2answers
8k views

Will Windows 8 install on MBR?

So will Windows 8 install on a disk which is of partition scheme MBR? Also, can there be anything like MBR and UEFI? (Isn't it GPT + UEFI?) Do the First Generation of Intel Core (i3,i5,i7) support ...
1
vote
3answers
2k 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.)
1
vote
2answers
928 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 ...
1
vote
3answers
4k views

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 ...
1
vote
2answers
39 views

how to mount beyond /dev/sda15 when using a GPT disk with lots of partitions

I have a GPT disk with about 20 partitions. They're on /dev/sda how can I mount each of these at the same time? as I understand /dev/sda is limited at /dev/sda15 this feels weird - being able ...