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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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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: ...
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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 ...
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Why does Windows 10 fail to install on UEFI/GPT laptop?

I'm trying to install windows 10 on a new 1TB SSD I got. fresh install, new drive, new laptop. Dell Inspiron 13 5000. Setup for UEFI. Created a bootable USB using rufus (GPT for UEFI (non CSM)). I get ...
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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 ...
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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 ...
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Cannot convert from MBR to GPT

I want to upgrade my disk from MBR to GPT, and I tried using Windows' MBR2GPT.EXE tool to do the job. I used Windows' DISKPART tool to identify the disk I want to convert. However, this happened: C:\...
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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 ...
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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 ...
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25 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 ...
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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 ...
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53 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 | ...
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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 ...
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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 ...
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54 views

windows 10 installation creates partitions in wrong order and fails because it thinks EFI system partition formatted as NTFS

I'm clean installing windows 10 on a dell laptop (this is my third time installing windows on this machine; previously I had windows and ubuntu dual booting in EFI mode) using a USB installation drive,...
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How to convert an MBR SSD to GPT in a UEFI environment

I recently was given an SSD by my friend. he used to use it on his laptop and has passed it on to me. The problem is that it is formatted to work with MBR. I have tried converting it but I would need ...
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59 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, ...
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How can I add UEFI and GPT support to Hirens BootCD for a bootable USB created Rufus?

I am trying to make a customized Hirens BootCD that will be bootable for a UEFI with GPT support. I plan on using Rufus. When I currently attempt this Rufus prompts me for a ISO image that has UEFI/...
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104 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 ...
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132 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 ...
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120 views

Clear a Linux storage device with sgdisk

I wish to use sgdisk to delete all partition definitions and data from a storage device, then create a GPT and two partitions on it . The best solution I've found is to use the -Z and the -o options. ...
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208 views

Moving `/boot` and `/` (root) partitions about on GPT/UEFI volume

I work under Linux with a 500GB GPT internal storage device, partitioned, so /boot, / (root), /var and /home are in separate ext4 volumes. For historical reasons (it used to be a dual Linux-Linux ...
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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 ...
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198 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 ...
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Is it possible to boot Linux from a GPT disk on a BIOS system?

I have an AMI BIOS computer. Is it possible to boot Linux from a GPT disk on such a BIOS system? EDIT 1: It is a Asus EB1501P with a Seagate ST9250315AS 250GB HDD.
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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 ...
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Two Windows Boot manager entries in Boot Priorities after MBR2GPT.EXE

I have M.2 SSD with Windows 10 installed. I used mbr2gpt.exe tool to convert the drive from the Master Boot Record (MBR) to the GUID Partition Table (GPT). Out of laziness I entered the /allowFullOS ...
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430 views

Converting MBR to GPT during Windows installation without wiping the disk

I get an old laptop with Windows 7 installed. Wishing to just clean install Windows 10 while keeping the data on non-system partition, I made a mistake by booting from Windows 10 installer USB drive, ...
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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 ...
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150 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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Why does converting a disk to GPT with diskpart automatically create a 128MB reserved partion?

I recently bought a 3TB internal HDD, intended to be used as a backup drive to encompass all of my data. After installing the drive into my system, I started to use Windows' command-line diskpart tool ...
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Install Grub2 to PBR of GPT

I want to make Extlinux (my main bootloader reside in MBR) to chainload GRUB2. I.e., I need to install Grub2 into the Partition Boot Record (PBR) of my Ubuntu Partition. It wasn't possible several ...
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Lost volume on external 4TB drive by converting from GPT to MBR

I am fully aware that i acted like a complete fool. Situation: I have Seagate M3 4TB external drive has one volume sized 4TB and containing 300GB of data. I converted it from GPT to MBR. The result ...
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Windows 10 / Linux dualboot on GPT-table without (!) UEFI - maybe another approach possible?

Would the following sequence work to run Windows on a GPT partition table without (!) using UEFI-boot? Install Windows the classic way in Legacy-BIOS mode onto a usual MSDOS type partition table Boot ...
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1answer
494 views

Converting GPT to MBR while Windows 10 is Installed

I'm very curious about this one. I have a UEFI Laptop, Lenovo Ideapad 320 to be exact, and the hard drive partition is on GPT format. If I use a third party to change the partition format without ...
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384 views

Get partition name and partition label on Windows 10 for GPT disks

How can I read both partition name and partition label, for a given drive with GPT partition table? I would like to do it on Windows 10. According to this post, both exist and are different on GPT (...
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591 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 ...
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Can I re-initialize a disk changing between MBR/GPT without losing data?

A Windows 10 PC started today with a black screen "Preparing automatic repair" on loop. Then somehow Windows started but one HDD was missing. From Disk Management I can see the HDD, but as an ...
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325 views

Alpine LVM installation with UEFI/BIOS dual booting support

I want to move from Arch+Windows [GPT, dual boot using built-in EFI menu] to Alpine+Windows [GPT, legacy BIOS booting support, XEN, LVM partitions for both Alpine as Dom0 and virtualized Windows as ...
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Which configuration will work without any problems in UEFI mode?

I am a beginner in UEFI, so excuse me if this question is vey simple. I have two 3 TB disks and want to install Debian 9.4 with RAID1 in UEFI mode.After reading all the information I am thinking about ...
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496 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 ...
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1answer
358 views

Windows 10 - When combining MBR and GPT drives, does this affect boot priority?

Situation I have three drives in my computer. An SSD and two HDDs for storage (let's call them HDD1 and HDD2). My operating system is installed on the SSD. HDD1 has served me well for 7+ years and is ...
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1answer
76 views

Recover data from Simple Volume

I have a 1TB partitioned into two. Windows - Simple Volume(can't access) Ubuntu - ext4 (works) I can't access the Windows partition because it is a simple volume. I haven't formatted the disk, so I ...
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Can I delete the System partition after converting from MBR to GPT?

I just converted my Windows system disk from MBR to GPT. Windows now has this tool, which failed to validate for me, saying it couldn't find my OS: MBR2GPT.exe | Microsoft Docs So instead, I used ...
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fdisk complains “The backup GPT table is corrupt, but the primary appears OK, so that will be used.”

I recently bought 2 WD Easystore 8TB external USB drives to shuck them and use the WD Red NAS drives internally in my computer. (Arch Linux) The first ended up being a WD White label drive (WD80EMAZ-...
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322 views

Recovering data off of a drive with a corrupt partition table - GPT Protective Partition?

A friends windows 10 machine crashed and the hard drive now won't boot. We took the hard drive and put it into my desktop. Booted linux, but we can't force mount the drive and the volumes don't come ...
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28 views

Recover ubuntu hard drive data

My friend while performing partition in my hard drive to add windows 10 alongside Ubuntu he accidentally formatted my hard drive from GPT format to MBR format and this resulted in hard drive space ...
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65 views

How can I prevent opening an EFI partition by Windows on a flash drive?

I have a flash drive with an ESP partition (and grub, but this is not relevant I believe) and data partition. Linux behaves correctly, i.e. it automagically opens data partition but leaves EFI ...
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82 views

External HDD Cannot Be Read

I have an interesting situation. A User brought in her external HDD which she was using to backup data on her MacBook Pro (OSX 10.12.xx), it is a WD EasyStore 1TB HDD. The User recently upgraded her ...
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MBR or GPT for external backup drive

I bought an external 1 TB hard drive for backups but I am not sure whether to use MBR or GPT. I am using Linux (x86_64) with MBR/BIOS but my laptop supports GPT/UEFI. I know about the differences ...
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Why the usage of GPT is important in (Windows 10, Windows 8.1) from security perspective [closed]

Guys! I am currently researching on usage of GUID in modern operating systems and i have found that there are a small number of reserved partitions in GPT such as MSR, ESP and etc. However, i cannot ...