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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When UEFI/(Motherboard Firmware), is set to UEFI(not legacy), USB is not detected

When UEFI/(Motherboard Firmware), is set to UEFI(not legacy), USB is not detected When set to legacy, it is detected. It goes without saying that I can't boot from it when the UEFI is in UEFI mode. ...
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277 views

*VERY* slow boot after changing from MBR to GPT - need to rearrange partitions

I recently changed from MBR to GPT and now my system takes over an hour to boot. I suspect a partition arrangement problem. I'm running Windows 10 on a RAID 5 array. Here is my current partition setup:...
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39 views

how can i install windows 7 parallel to 10?

so i wanted to upgrade my laptop windows from 7 (which it came with) to 8.1, i couldn't do that because the HDD was in MBR format so i had to change it to GPT and so i did, now i'm on windows 10 i ...
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803 views

Trying to understand linux support for 4TB hard disk drive on legacy BIOS

I want to add a 4TB hard disk drive for data storage only. My current configuration: Intel Server Board S3210SH (Legacy BIOS, 2009/05/22) Running Arch Linux. Installed in a Crucial 512MX SSD ...
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5k views

Installing Windows 10 “Windows can't be installed on MBR. Convert to GPT”

Alright, it's a long story. I was on Windows 7, with 4 partitions. I decided to do a complete clean up and upgrade to Windows 10. So, while doing that, I selected the option, (I don't remember it ...
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87 views

Alternate location for GPT partition entry table

The GPT header (usually in LBA 1) has a PartitionEntryLBA field (see 5.3.2 GPT Header in the spec). There is language in various references (such as the wikipedia GPT entry) describing that field ...
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225 views

How can I clone only a bootable windows partition(not the disk) to a file?

I have a hard disk which is 1 Tb in size. I have created and installed windows Xp on a partition of size 10 Gb. I want to clone the partition to a file on another disk such that I can dd the file to ...
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61 views

Can't boot Windows 8.1 after update

I'm using linux for my day to day use. Thing is, I don't recall having any problem with my windows installation. It might be that I installed some updates and didn't restart, simply powered off and ...
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1answer
34 views

Is it possible/safe to resize non-adjacent GPT partitions

I have a partition table that looks like this. I'd like to enlarge the /dev/sda4 partition (where I have Windows) by reducing the /dev/sda9 partition (where I have the /home directory with Linux). ...
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277 views

external hard drive rescue mbr to gpt to mbr

good day all I am a slightly losing my mind at the moment. I recently bought a flashdrive for backup livecd/rescue purposes,but I am a day to late. I have an external hard drive, 2TB Seagate - file ...
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1answer
79 views

windows 8: this is a boot disk

My wife's win-8 laptop has a bad hard drive. I'm trying to get her a new SSD. I set up the new disk, cloned (not copied but clonezilla) the four partitions from the old disk to the new disk, and ...
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51 views

How to make recovered windows partitions bootable?

I have the following situation: I have a "backup" of a failed/non more existend disk which has an exact copy of all its partitions but the difference that it has no bootloader or what so ever and it ...
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1answer
398 views

4TB drive only showing as 1.6TB?

So as the title says I have a 4TB drive I want to add as a secondary drive in my PC. I will not be booting off this drive. It is new, and not formatted in any way. I'm running Windows 7 Pro 64bit SP1 ...
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2answers
923 views

How to repair a Windows Boot loader damaged by GParted?

My notebook has two disks (there is a third disk -/dev/sdb - that is cache for the second disk). Windows 10 is on the second disk (/dev/sdc) (SATA ODD) and was working very well until today. Ubuntu ...
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49 views

Windows cannot be installed on this disk. The selected disk has an MBR partition table. On EFI systems , Windows can only be installed to GPT disks [duplicate]

I want to format c drive and reinstall windows 8. previously I've installed windows 8 and ubuntu together in same C drive in separate partitions.previously I've configured ubuntu grub to select which ...
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33 views

Harddisk failing controller [duplicate]

My 2-year old Seagate 3TB hdd is failing. At first, Windows 7 was giving error id 11 (The driver detected a controller error on \Device\Ide\IdePort1), then the drive appears to work very slowly, with ...
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267 views

Whole disk encryption on a tablet (that has no pre-boot keyboard)

I am researching methods to encrypt whole disk on tablet. I would like to encrypt my tablet that comes with Dual Boot OS, with pre-installed Windows 10 Home and Android 5.1. Let's start with what ...
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82 views

Windows 10 volume converted from MBR to GPT, how to readd recovery command line console?

I decided to do what you're not supposed to do and convert my MBR install of Windows 10 to GPT. I used Paragon Hard Disk Manager 15 for the conversion, it worked fine, and I managed to get boot ...
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1answer
538 views

Freeware MBR to GPT conversion in Windows without data loss [duplicate]

I recently had to rehouse an 8 TB drive due to damage to the micro B socket. It has only ever been one partition. Windows 8 and Windows 10 incorrectly identify it as being split into 3 partitions. One ...
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2answers
44 views

Bootcamp Partition Issues

Okay, so I have OS X 10.11 and Windows 8.1 partitioned on my computer, I installed windows using efi. I decided to add an additional partition to my computer, but windows decided that it didn't like ...
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50 views

Move bootmgr from one drive to another (EFI)

My computer currently boots from my HDD, then loads the system located on my SSD. In the following picture, disk 0 is my HDD that contains the boot manager, and disk 1 is the SSD I want to boot from. ...
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62 views

Should I care about manufacturer-specific GPT partition type for boot partition?

Laptop Lenovo g710 (UEFI) with preinstalled Windows. Going to format disk (GPT) to install linux. EFI System partition GUID (common) - C12A7328-F81F-11D2-BA4B-00A0C93EC93B Lenovo boot partition GUID ...
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51 views

Arch-Win7 dual boot laptop freezes, and then is unable to boot

I have a Dell Precision laptop, with a Arch-Windows 7 dual boot, 64bits systems, GRUB2 as boot loader, and a single SSD. I found myself browsing around for reasons which I will not explain to this ...
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451 views

Windows 10 UEFI Installation

I am trying to do a clean install of Windows 10 on ASUS N550JX. I have a Samsung 850 Evo SSD. I have deleted all my partitions using GPARTED. The problem is whenever I boot up my USB containing ...
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119 views

I have a corrupt gpt with a luks partition. How do I recover the disk?

I encrypted my drive about a month or so ago with LUKS(through Gnome Disks). It was working just fine and I restarted my computer, then Some time later I tried to access the drive and it wasn't there.....
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643 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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33 views

Is there a master list of gpt type codes?

The Wikipedia article on GPT lists a few dozen codes, but I've found some that are not on the list (especially by dumping an Android partition table). Is there a master registry of these codes? Also,...
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4k views

How do I repair Windows 10 UEFI/GPT disk which is left unbootable after deleting partitions?

I recently upgraded from Win8 to Win10. The Win8 machine was in a dual boot with Ubuntu on an 80GB SSD. After the update and a few other issues I created while messing around with GRUB, I'm now left ...
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63 views

UEFI detection (ESPs)

Does the UEFI boot manager detect the ESPs inside the GPTs on every storage device, based on the global-scope variables (boot-configuration) stored in NVRAM? Reading the UEFI booting from Wikipedia:...
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MBR vs GPT (Logical Block Addressing)

Going through MBR/GPT I'm a bit confused on the transition from MBR (2^32) to GPT (2^64). If you breakdown the history from CHS-to-LBA addressing: CHS (24Bits) - 8GB Limit (1979 - Introduced with "...
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32 views

UEFI but not booting directly

I was playing around with my partitions finally now it doesn't boot directly. For it to boot I need to go to HP boot menu and then choose EFI file to boot to load the OS. Something like EFI partition ...
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1k views

I want to expand a partition on my boot SSD, but there is a Recovery Partition and EFI System Partition in the way. How can I get around this?

Here is a screenshot in Windows Disk Management showing the partition layout on my disk: I wish to expand the Windows partition (C:\ drive, "Boot") into the 16 GB of unallocated space. However, ...
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1answer
234 views

Installing Ubuntu 15.05 alongside Windows 8.1

I've been trying to install Ubuntu 15.04 alongside Windows 8.1. Windows 8.1 is currently installed, the computer has two drives, both of which (as near as I can tell), use GPT. The first drive is an ...
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1answer
91 views

Support for using >2TB HDD

Iam working on providing support for HDD morethan 2TB on TI8107 board. According to GPT header, at LBA1 with offset of 0x28 we get the first usable sector and LBA1 with offset of 0x30 we get the last ...
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218 views

GPT and MBR with Recovery Partition

I purchase a laptop with GPT partition table. on the hard drive i have one partition-recovery partition and the other is the OS partition. Since it is windows 8.1, i need to install 7 pro. I want to ...
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63 views

Grub Rescue upon attempting to reinstall WIn8.1 on Msata

New device and not dual boot as far as I am aware. New clean install of win 8.1 was compromised. Intel provided a new device. Upon attempting to reinstall 8.1, it would not allow installation onto ...
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202 views

Invalid GPT and No Partitions found on External Hard Drive

Ok so I'll start from the beginning here, and I'll do my best to give you all of the info upfront. Hard Drive: Toshiba DWC120 2TB Original File System: NTFS I was having issues with this hard drive ...
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1answer
5k views

Fix The Selected Disk is of the GPT Partition Style error

I am using Lenovo G510 with Ubuntu 14.04 as the OS. I need to install Windows 7 as dual boot. But when i trying to install Windows 7, I am getting an error as below. Windows cannot be installed to ...
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1answer
3k views

Changing System Drive from GPT to MBR

I currently have an Acer Laptop running Windows 10. My system drive currently has a GUID Partition Table (GPT) but I want to convert it to MBR Partition Table. Doing this wont be a problem as I found ...
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1answer
30 views

Are the positions required for UEFI / GPT secure?

I recently manually set up UEFI for my windows install. Today I read an article about Lenovo shipping malware on the UEFI positions of some of their laptops. This got me wondering, is the partition ...
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245 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 ...
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1answer
134 views

Windows can't be installed on GPT partition

I got a Windows 10 official release ISO file, so I burned it to a USB flash drive, and tried to boot it. I deleted all but one D: partition, which has all my working files so I can't delete it. I then ...
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Adding a windows partition to an existing Linux GPT/UEFI drive

I have a working Linux system that boots from a GPT/UEFI drive. I would like to add a windows partition to this drive, without destroying the existing boot system in the process. Theoretically, I ...
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101 views

Changing Partition scheme

I want to change my partition scheme from MBR to GUID. Is there a way to do this without any data loss. I have Windows 8 installed. Will my OS boot after changing the partition scheme?? Thank you..
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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 ...
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1answer
160 views

Can a >2TB hard (GPT) drive be used as non-booting data drive on a non-UEFI board?

Our workstation can only boot from MBR max. 2TB hard drive. The BIOS cannot be changed to UEFI mode by firmware update or similar. We are running Win Server 2012 R2. Can we use a 2TB hard drive ...
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2answers
527 views

Convert disk with OS from GPT to MBR

I'd like to know if it's possible to change disk partitioning standard from MBR to GPT for a disk with OS on which I do that, without loosing the OS. I have windows 7 and want to install side by side ...
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3answers
856 views

3TB drive on BIOS system

I have a HP Proliant microserver gen 8 on which I am planning on installing Debian. I was thinking of setting up a raid-1 configuration through the built in raid controller using two Western Digital ...
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235 views

How can I create a partition in a the GPT formated drive on OS X, which then results as a GPT partition and not MBR partition?

Looking around on how to install windows 8 or 10 on bootcamp I got the famous error from windows installer telling me I need a drive formatted as GPT an not as MBR. Actually I can't understand why ...
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422 views

Cannot restore Windows Backup Image made in Windows 8.1

I have the following Situation: Laptop is EliteBook 840G1 with 256 GB SSD (Crucial M550). Windows 8.1 with Update has been installed without CSM. I made a Backup using Windows' System Image Backup ...