Questions tagged [gpt]

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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6 votes
3 answers
35k views

SSD displaying incorrect size, despite having no unallocated space

I have a 120GB SSD that I recently copied to a 250GB SSD via a device-device clone on Clonezilla, the clone worked without issue and all of my previous partitions were successfully cloned to the new ...
3 votes
2 answers
27k views

Boot error loop -> /rebuildbcd error and cant set active volume

Background After my sister's three months of vacation with no internet access, she got home and there were many updates for Windows 10 and Norton installed. After reboot Windows didn't start. ...
1 vote
3 answers
3k views

How do I reformat a HD to GPT with the filesystem NTFS?

I'm trying to install Windows on my hard drive. Unfortunately, it is in MBR and not GPT. After looking up this on the internet, I used a live USB of Ubuntu to gdisk it into being a GPT. I originally ...
2 votes
2 answers
27k views

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.
0 votes
1 answer
289 views

Unable to extend my efi partition with unallocated space

This is how the partition layout looks in the Easeus partition manager: Could anyone suggest how to extend my EFI partition with the unallocated space? Or some other way.. i'm having some issues due ...
0 votes
2 answers
15k views

Can only install Windows 7 in UEFI-Legacy Mode

I have had an issue installing Windows 7 on an MSI system (FM2-A75IA-E53) in full UEFI mode which seams to be the same problem many have had without a solution. From everything I have read, this ...
1 vote
0 answers
2k views

Booting from GPT disk on old MBR computer [duplicate]

I have pretty old (~8 years) Supermicro server, which just got 4T new disk (actually it may be even bigger, because we are considering update to 5T or maybe even RAID 12T). I'm trying to install some ...
0 votes
0 answers
6k views

MBR2GPT Disk layout validation failed with multiple drives

I'm currently trying to convert all my disks from MBR to GPT. I have a 500GB SSD with my Windows 10 installation. I also have 2 1TB hard-drives with my personal files. Here are what my current ...
7 votes
3 answers
4k views

Win8x64, after format/upgrade from Win7x86, "GPT Protective Partition" on secondary drive

I backed up all important data prior to formatting the C: drive, but I cannot read the backup drive after reinstalling Windows. More details provided after the screenshots. Additionally As you can ...
0 votes
1 answer
5k views

I get the error: "Reboot and Select proper Boot device"

After I got a new and bigger SSD, I wanted to install Windows 10 on it. For some reason BIOS did not list my bootable USB device, with the Windows 10 installation. So I connected it thorugh SATA ...
2 votes
0 answers
96 views

GUID Partition Attribute not working on MacOS

I'm trying to prevent automount on a device. The device contains only one FAT32 GPT partition. I have set the GUID Partition attribute to 63 using gdisk (i.e. do not automount). I have also tried ...
0 votes
0 answers
139 views

Storage HDD - Missing GPT table I think, options?

Have a 2 Tb storage volume, contained a 1 Tb NTFS volume and a 1 Tb Ext4 volume. Spare computer, I switch it between windows and linux. Recently put on Windows, and on first boot Windows said 'you ...
11 votes
2 answers
16k views

Change GPT partition number

I have a 2TB GPT drive that for some reason is mounted as /dev/sdc2. I would prefer all my data drives to be mounted as /dev/sd*1. If I use sudo parted /dev/sdc print I get: Model: ATA WDC WD20EARS-...
4 votes
0 answers
2k views

Cannot repair bcd because the windows installation cannot be found

I'm trying to rebuild my BCD but my windows7 installation cannot be found. So far, I have typed these commands from the Windows7 install DVD (which I booted in UEFI mode) : X:\sources>chkdsk /r c:...
-3 votes
2 answers
310 views

Windows Media creation USB not booting

I used this abomination of tool to create a bootable usb I already have experience in this kind of things so I went pretty confident, then the usb wasn't booting. I checked if it was recognized by the ...
13 votes
1 answer
6k views

What is the GPT header signature for?

According to this Wikipedia article, the second Logical Block Address of a GUID Partition Table (LBA 1) is the primary GPT header. It then states in the section about the header that the first 8 bytes ...
1 vote
0 answers
121 views

How should I adjust my partition layout so I can update Windows 10?

When I upgraded my PC I installed Windows 10 on a new disk with the old disk still inserted. This meant the new install did not get a system reserved/boot partition. I fixed that by manually creating ...
2 votes
2 answers
9k views

What does this disk/partition GPT Attributes mean?

I have found a recommendation to change the GPT Attributes of a partition in order to prevent windows from automatically detecting and assigning a drive letter to an encrypted USB drive when inserted, ...
1 vote
1 answer
1k views

Windows 10 won't install on GPT partition, WD 6TB

I have a new WD 6TB drive, I boot from Windows10 USB, It originally partitioned the drive as MBR, Windows installed, however I could only use 2TB of the 6TB drive and it would not let me create more ...
1 vote
0 answers
1k views

Partition table to make bootable USB drive

I use fdisk to set the partition table and to create partitions and unetbootin to install the OS on a USB drive. Can anyone explain why the only partition table which makes USB boot option that ...
0 votes
0 answers
614 views

Windows 10 GPT partition keeps getting MBR corrupted after restart

Recently my friend laptop got problem with the master boot record & keep showing that "no bootable devices can be found". I though it's only a MBR problem but then I fixed the MBR & ...
0 votes
3 answers
4k views

DISKPART: GPT Primary Partitions

For a GPT disk Microsoft DISKPART command list partition defines some partitions as Primary and similarly the Disk Management utility. But the old primary/extended partitions of the MBR scheme is ...
0 votes
1 answer
1k views

How to restore Windows 10 GPT boot config using command line?

Long story short, windows 10 GPT drive can't boot, and can't access drive in question from command line, only X:\ . I have the option to repair/rebuild MBR using live ISO but its a GPT drive, is this ...
3 votes
1 answer
2k views

GPT partition shown in fdisk, but gparted shows no partitions

This is very frustrating. I haven't been able to find anyone else with a similar problem. First of all, my prebuilt windows PC stopped working, I can no longer turn it on, and I'm getting it sent in ...
9 votes
1 answer
91k views

MBR2GPT: Disk layout validation failed for disk 0 [duplicate]

When trying to convert to GPT, I get this error: PS C:\WINDOWS\system32> mbr2gpt /validate /disk:0 /allowfullos MBR2GPT: Attempting to validate disk 0 MBR2GPT: Retrieving layout of disk MBR2GPT: ...
8 votes
4 answers
50k views

How to do UEFI+GPT with a iso file greater than 4GB

As I understand the only way I can reformat my laptop which is gpt+uefi by default is if I crate a bootable usb that is also gpt+uefi. However the image file that I have is greater than 4GB and RUFUS ...
5 votes
3 answers
2k views

What's the GPT equivilent to MBR 0xDA (Non-FS data)

For MBR partitions that hold data that isn't a filesystem, you typically set the type to 0xDA. I looked through various GPT tools' man pages (gpart and GNU Parted), but couldn't find a suitable ...
1 vote
1 answer
4k views

Clover Boot EFI file on non-UEFI computer

So I have heard about booting into Clover from a BIOS boot and booting back to the first bootloader but in UEFI mode. Is there any detailed way of how to make such a configuration? I can't seem to ...
1 vote
1 answer
3k views

How to convert SSD from MBR to GPT during clean install of Windows 7? [duplicate]

I'm trying to convert an SSD from MBR to GPT when installing Windows 7 so I can use UEFI rather than Legacy boot mode. I realize there are a few related questions here but I didn't find them ...
1 vote
1 answer
408 views

Win 10 - 32 bit VM on a win 10 64 bit GPT disk system

I have a win 10 pro x64 system running a GPT HDD. GPT mandates 64 bit systems and a win 32 bit system cannot exist in the presence of GPT disks. I want to run a win 10 pro 32 bit system in a VM such ...
0 votes
2 answers
281 views

Device support UEFI

I now have MBR and I want GPT. My firmware is now Legacy(BIOS) and I want UEFI. My firmware can boot in UEFI (option is there inside). I have Windows 10 PRO. Motherboad: 1949 KBC Version 90.0F ...
0 votes
1 answer
2k views

Dual boot install and re-partitioning to use mbr2gpt tool

I now have Windows 10 Pro, build 17134. I want to create dual boot for Ubuntu 18.04. I want to use MBR2GPT.exe tool because now my BIOS mode is "Legacy" (MBR). Requirement is to have only 3 ...
0 votes
1 answer
243 views

Moving Windows partition (EFI, GPT)

Suppose I have a computer that was once a purely Windows desktop, whose disk contained at least the usual EFI System Partition (the ESP) and the Windows partition itself. Suppose that one day I ...
0 votes
1 answer
812 views

GParted and Disk Utility disagree on the partition layout - but Disk Utility is inconsistent

I'm trying to make a storage partition on my bootable Linux flash drive. It's using GPT and booting with EFI. |------|-----------------| - - - - - - - |----------|------| | EFI | Linux | ...
0 votes
1 answer
1k views

Bootcamp Windows 10 in Legacy BIOS mode reports external pure GPT disks as MBR. Why?

I was under the impression that Windows just required the drive it boots from to be MBR when booting in BIOS mode, hence the hybrid MBR setup created by Bootcamp on my Macbook Air 2012 (this model ...
1 vote
2 answers
233 views

Why does an OS and its installer behave differently depending on whether legacy mode is used or not?

Some context: Earlier today, I attempted to re-install Kali Linux on my machine (dual booted with Windows). To accomplish this, I downloaded the ISO and put it on my Easy2Boot USB stick. In order to ...
1 vote
2 answers
3k views

Converting GPT to MBR for 1 partition without losing data from other partitions

Is it possible to convert a single partition from GPT to MBR without losing data from other partitions? I had installed windwos 10 and Ubuntu as dual boot and i wanted to reinstall windows 10 and ...
1 vote
1 answer
135 views

Is there an OS selector for GPT style partitioned hard drives?

I've installed Ubuntu on my external hard drive and whenever I want to boot that, I have to hit F12 and go into the settings and give priority to my USB over the Windows boot, so this process is a bit ...
0 votes
1 answer
124 views

Restoring windows 7 system backup to UEFI or GPT [closed]

I am forced to shift from my old HP dv6 3121nr Laptop to a new laptop (I am still to purchase) which comes with windows10 and GPT UEFI. I want to take system backup (may be with software like AOMEI, ...
5 votes
1 answer
34k 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 ...
3 votes
1 answer
1k views

How to write a protective MBR in Windows?

I have a UEFI machine with CentOS on one disk and Windows 2016 on another. The Windows installer writes the GPT protective MBR, but it doesn't follow the UEFI standard exactly, as described here. It ...
1 vote
2 answers
3k views

Move Windows 8.1 to beginning of disk

I have 1TB hard disk drive where 700GB is reserved for my personal files. Remaining space is for Windows 8.1. Problem is that Windows 8.1 with their 4 partitions is at end of disk, so I can't extend ...
0 votes
1 answer
9k 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 ...
-1 votes
1 answer
147 views

from GPT to MBR and vice versa, now I do not see previous partitions

I will go straight to the point, I have a laptop in dual boot (Windows 10 and Kali Linux) which has been converted from the GPT partition to the MBR (for reasons I do not know), I used gdisk to ...
2 votes
4 answers
40k 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
1 answer
20k views

How do I format an HDD to GPT partition style using Windows 10's installation disk

I'm trying to install Windows 10 in GPT mode, but unfortunately the disk inside the computer I'm trying to install into is already formatted using MBR. I've been working around this problem by first ...
1 vote
0 answers
469 views

Boot Linux from a GPT disk using SYSLINUX

From Booting from GPT, it says that both Grub & syslinux support booting Linux from a GPT disk. Anyone knows how exactly can I use syslinux to boot Linux from a GPT disk please? The article says ...
1 vote
1 answer
121 views

Can Windows 10 repair media repair a formatted C drive?

Windows 10 was installed on Drive C. Drive E and F are almost full. I decided to downgrade to Windows 8, and made a bootable USB stick of the same. I'm a linux guy and my windows skills are rusty at ...
0 votes
0 answers
801 views

is it possible to convert bitlocker encrypted GPT drive to MBR?

I have found some guides how to do this in diskpart or by using EaseUS partition master, but they don't mention if it would work with Bitlocker. And before you ask me why I want that - to be able to ...
0 votes
1 answer
2k views

Unable to boot into bootcamp (Windows 7), due to resizing only OSX partition

I have a MacBookPro 2011, OSx 10.9.2, it is dual booted (using bootcamp). I followed this youtube video that shows how to resize mac https://www.youtube.com/watch?v=zhkdOLXT6Eg but after resizing ...

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