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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Is it safe to convert a MBR flash drive to GPT?

I just bought a new flash drive (128GB) and I want to partition it. I have run into problems (AKA windows not recognizing a second volume if I partition it) because it is an MBR drive. Are there any ...
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61 views

Found a way to convert drive from GPT to MBR and vice versa without data loss but,

I also have found a way to convert drive from GPT to MBR and vice versa without data loss using the AOMEI Partition Assistant Pro Edition 6.0 but, I fear because actually, I have Windows 10 already ...
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53 views

Is it possible to convert a SINGLE drive partition only from GPT to MBR without affecting other drives?

I want to know how to convert a SINGLE drive partition only from GPT to MBR without making any kind of changes on other drives which are in GPT. This means that no data should be affected on other ...
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254 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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29 views

Recommended setup with 2 hd and 2 os

I have a Thinkpad T420 laptop, with 2 hard drives: SSD drive, 128GB, GPT (disk1) normal HDD, 5400 rpm, 500GB, MBR (disk2) I need to run 2 OS in this laptop: Windows 10 + Ubuntu 16.04. So, I've ...
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CentOS7 mount: special device /dev/sdb1 does not exist , but i can see it with fdisk

I had centos7 running on a machine. Attached to it via usb3 I had a disk caddy holding a 4TB WD green HD. This worked perfect for me. And it even worked in the previous centos7 machine. I got a ...
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6 views

Recovery on OS X without losing data

Today I installed Linux on my MacBook Pro 2011 after I installed MacBook boot directly on it. After with they option key, I booted on OS X v10.11 (El Capitan), and with gdisk. I tried to make it ...
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3answers
103 views

Relationship between MBR / GPT / UEFI and their limitations

I have a situations where i have to decide to use MBR or GTP and UEFI. I've read too many articles on internet, but I'm confused about some things : I've read that MBR does not support drives with ...
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109 views

Installing Windows 7 on a 4TB Hard Disk (not detecting above 2TB)?

I have a SeaGate Hard Disk (with 4TB capacity) which has the code number ST4000VX000-1F4168 (Surveillance HDD). I am trying to install Windows 7 in it and Windows 7 only detects 2TB capacity and not ...
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33 views

GPT option is not available in Rufus

I am trying to install Windows 7 x64 via USB stick but the option of GPT partition scheme isn't there! I have only MBR option. I am using Windows XP SP3 cause it's the only one available for setup ...
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37 views

Can a GPT Hard Drive Read MBR Hard Drive?

So, here is my problem: I installed Windows 8.1 Pro on a UEFI/GPT HDD (hdd0). I've been using my computer for a while and it turns out that it's running out of free space. Is it possible to create a ...
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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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56 views

MBR to GPT migration on Windows 7 x64 — what is the path forward

I use Backup Exec System Recovery to migrate to larger hard drives, to new PCs, etc. I have painted myself into a new corner, and am looking for the way out. Situation: I migrated to a new hard ...
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3answers
2k views

Convert GPT disk to MBR disk in-place?

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

diskpart.exe on Windows 7 with GPT disk — unable to set partition active?

On windows 7. I cannot figure out how to set a volume active or boot on a GPT disk with diskpart. Is that the wrong tool? I am having to go back to MBR, because I just can't figure out how to ...
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36 views

Remove partitions that appear after GPT format

I recently formatted my USB to EFI with GPT partition on Windows 10 using diskpart. Since then, even though the USB is not plugged in there are two partitions (empty and useless) that show up among ...
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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 ...
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69 views

Install Windows 7 on GPT partition

Today I got really frustrated when tried to upgrade a friend's Lenovo laptop from Win8 to Win10. The upgrade just fails no matter what I try... And I tried a lot of things... Long story short, I ...
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1answer
22 views

BIOS with 'no issue UEFICompliant' support for GPT partition tables

I would like to change my hard drive partition table from MBR to GPT, (since MBR supports 4 primary partitions). After some searching, I discovered C:\Windows\Panther\setupacl.log, and found a few ...
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549 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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83 views

GPT Partitioned Disk not Recognized by BIOS

I have received a Samsung Ativ Book 4 (model no. NP4705E-K01UB [this computer is UEFI compatible BTW]), and for the first few months that I used it, it has worked fine with MBR partitioned disks. ...
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57 views

Installing Win7x64 on existing Win8 laptop for dual-boot - UEFI/GPT Issue

I have a UEFI HP G7 Laptop with Windows 8.1 pre-installed, and I'd like to add Windows 7 as a dual-boot. In Win8, I've turned off Fast Startup, made room on the existing partition in order to create ...
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Clonezilla fails at cloning with mismatched GPT and MBR partition

I got this message: This disk contains mismatched GPT and MBR partition: /dev/sda Clonezilla's FAQ says: You might have installed an OS with GPT partition table, and later overwrite the ...
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Convert MBR to GPT - Without any OS

I just got a new laptop without any OS (it had FreeDOS, but not anymore). When I go to Windows Installer and try to create a new partition from un-allocated space, I don't get any Error message but ...
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1answer
74 views

Writing .img to USB using dd results in corrupt primary GPT header

I have a 64GB USB 3.0 drive that I plan on installing bootable operating systems to for sysadmin purposes. My primary operating system is Mac OS X 10.11. I have a copy of ubuntu-16.04-desktop-amd64....
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3k views

Installing Windows 7 on notebook with Windows 8 pre installed?

I have just acquired a Dell Inspiron 7720 with Windows 8 pre installed. I want to remove Windows 8 and install Windows 7 in it. Windows 8 is installed in the C: partition which is in GPT style. There ...
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30 views

Why did copying my Windows 10 partition to a new location cause my desktop to flash constantly?

Would simply moving my windows partition to an earlier location on the disk, and running bcdedit to create a new boot entry, be expected to cause any problems? Here's what happened: I had a windows ...
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48 views

OS X stopped recognizing my HFS+ partition when I created a new partition before it

I have a 2 TB USB drive that's using GPT, but OSX (10.11.4) on my macbook pro (early 2015) stopped recognizing my HFS+ partition after I inserted a partition before it on the disk. This is what I had ...
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28 views

Did I lose my data by converting HDD from GPT to MBR? [duplicate]

I tried to install Windows, which required an MBR disk instead of a GPT. I converted GPT to MBR using diskpart utility. After that all my logical disks disappeared and only one (with total amount of ...
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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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33 views

UEFI boot and data disk

I'm on Windows 10 and I'm ready to convert to UEFI boot, but I want to know, if I need to have all my disks with GPT or only disk from which I will boot. Because my data disk is really full and ...
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41 views

Old redundant Windows 10 boot manager entries after clean installation

I wiped my drive (/dev/sda) which contained previous Windows 10 installation by using gdisk in Arch (which is installed on /dev/sdb) and choosing z for zap (wiping GPT) and deleting whole partitions ...
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141 views

Getting error: Windows cannot be installed to this disk. The selected disk is of the GPT partition style

I am trying to reinstall Windows 10 on my friends machine from bootable USB. Following is what I have done till now: I created bootable USB using Windows 10 ISO and Rufus with GPT Partition scheme ...
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1answer
85 views

Do I have to have my OS installed with UEFI to convert my system HDD from MBR to GPT without data loss?

So as of right now I have a PC with a BIOS-only mainboard (Gigabyte 775 - GA-P35-DS3) with which I installed Windows 10 64bit on my 4TB hard drive with MBR. Now I'd like to buy a new mainboard with ...
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141 views

Installing Windows from bootable USB pendrive on UEFI enabled machine

I have 5 year old Dell XPS 15. I have installed Windows several time one it using procedure below: build bootable USB pendrive from Windows ISO using a Windows DVD/USB tool plugging in USB pendrive ...
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410 views

replace efi firmware with old legacy bios?

So I bought a new laptop with 64-bit windows 8 pre-installed, and in preparation for downgrading to win7 32-bit, i've been reading about EFI and MBR etc.. It seems like the firmware which boots disks ...
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49 views

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

My problem is similar to this question: windows cannot be installed on this disk. The selected disk is of the GPT partition style. Windows 8.1 When I changed the bootmode to UEFI only and restarted ...
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1answer
82 views

How do edit the contents of my BIOS boot list?

So the other day I installed Windows 7 on a GPT disk. It works fine. Today I went to boot off my Linux Live USB and I noticed Windows Boot Manager was in the list. I use a traditional BIOS and it ...
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1answer
830 views

How do I convert an EFI System Partition into a normal GPT partition?

I had a Windows 8.1 that required a re-install. In the process, my 4TB secondary disk is now showing up in Disk Management as an EFI System Partition, with no volume. In DISKPART, a volume is shown, ...
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2answers
654 views

How do I make a UFD that will boot on UEFI?

I have been trying for more hours than I'd care to admit to get a bootable UFD (USB Flash Drive) with Windows PE on it. There are loads of tutorials, all of which I've been trying in succession, but ...
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3answers
29k 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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105 views

Windows 10 vs Windows 7 GPT filesystem incompatibility?

Good evening, I've got a dual boot system with Windows 10 and Windows 7 installed on one HD, and my second HD is an empty one for storing multimedia and games. Both disks are formatted as GPT. I've ...
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65 views

Windows and hybrid MBR on removable USB disk

I carry an USB thumbdrive with me. It contains a data partition, an Ubuntu Linux installation and an EFI System Partition. It uses a hybrid MBR so I can boot from it on modern EFI-only and legacy BIOS ...
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1answer
106 views

Hard drive corruption on a dual-boot system

Recently I've decided to buy my first SSD and install Windows 10 on it, and use one of my older HDs to install Windows 7, for dual-booting from separate drives. Both drives are connected through SATA ...
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1answer
115 views

Explaining the behavior of 8TB disk in different USB adapter

I was trying to make a backup onto a 8 TB Seagate SATA disk, so I placed the disk into a USB 3 adapter QP0020 by LogiLink and initialized the disk to be a GPT disk, using the whole capacity in one ...
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444 views

How to Using Metro Boot Manager on UEFI BIOS when Dual Boot with Linux

I have a problem when trying to set up dual boot (Windows 10 + Linux Mint 17) in UEFI mode or on a GPT disk. I cannot go back to using the default Windows 10 boot manager? In Legacy mode or on MBR ...
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0answers
458 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 ...
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43 views

Is dual booting on a store-bought Win10 system even possible? [duplicate]

My situation: I got a Win10 system with ONE physical (afaik) HDD of one terabyte. I want to dual boot with Win8. I tried to do it, but it gave me an error that said the HDD was GPT and that I needed ...
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83 views

Windows 7 in Boot Camp can't read other FAT32 partitions

On my Mid-2009 MacBook Pro, I have OSX 10.6.8 installed, Windows 7 (through Boot Camp), and 2 FAT32 partitions. The extra two partitions are not visible to Windows 7, but they are visible on the OSX ...