Use this tag for GPT partition tables.

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Arch install - Can't install GRUB

I'm currently trying to install arch linux alongside windows 10 on my computer which is UEFI and formatted as a GPT partition table. However, when installing grub using the command: grub-install --...
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25 views

Access to disk partitions from QEMU

I have two OSes installed on my hard drive - Windows and Linux. These are setup in a dual-boot configuration. The hard drive uses GPT and UEFI. I'm looking for a way to grant QEMU (in Linux) access ...
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set partition bootable with gdisk GPT

Using GPT, how do I set this disk: sda1 ext3 FUJITSUMHV2080B so that the partition is bootable? Or, do I need to reformat using the install disk?
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backup and restore whole disk

I am using iMac, with GPT and Hybrid MBR partition table. the GPT layout is: EFI partition.(FAT32) Windows 7 partition.(NTFS) MacOS partition.(HFS+) Linux.(ext4) data.(exfat) the hybrid MBR is ...
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Why Linux can boot from GPT partition type on systems BIOS?

Why Linux can boot from GPT partition type on system with either BIOS or EFI firmware but windows or OSX can't? What's the concept behind this?
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122 views

Can't restore/reformat my USB flash drive after moving to GPT

I have 8GB flash memory stick. Sometimes ago I formatted it to be able to install Windows from it. I can't remember what exactly I did but I think I wanted to be able to install Win 7 64-bit to boot ...
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1answer
38 views

How to mark a partition as unmountable?

I partitioned a MMC card into multiple partitions (in GPT format), and the very first partition is just padding space so that all other partitions are aligned to a optimal boundary. Problem is, on ...
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87 views

Unable to mount XFS after rescue, why?

I am facing a strange problem with XFS file system. Below is the exact scenario: I'd a corrupt 2TB disk with XFS (I/O error), so with that decided to rescue data from old disk to new disk. I'd run ...
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1answer
321 views

mdadm: no devices listed in conf file were found - Debian 8 with GPT

I have a Debian Jessie (3.16.7-ckt20-1+deb8u3) system with RAID1 on 2x 3TB hard drives. Grub can't be installed into MBR on drives >2TB, thus I have GPT with 1MB bios partition: Device Start ...
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61 views

Why is uEFI firmware unable to access a software RAID 1 /boot/efi partition?

BIOS firmware can boot a BIOS formatted /boot partition installed on a software RAID 1 pair no problem. It can even boot from a /boot installed on LVM volume that lives on a software RAID 1 pair. But ...
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222 views

Ubuntu 14.04 software RAID with LVM install won't boot on bare metal

If I setup a VirtualBox guest with two 30 GB virtual hard disks and follow the following steps, the result will be a fully functional, booting operating system: Boot Ubuntu 14.04 Server install CD ...
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103 views

Mounting efi disk on external USB

Recently I bought new sshd to replace my old one on my notebook, but I have problem. I installed Ubuntu 15.10 on new one and put the old on usb case I have, but the disk on USB doesnt have partition (...
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98 views

How to understand partition table on hybrid ISO image?

If I inspect an hybrid ISO with tools like fdisk and gdisk, then looks like hybrid ISO has both the MBR and GPT in order to support both the BIOS and UEFI: # gdisk -l /dev/sdb GPT fdisk (gdisk) ...
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69 views

Combine grub2 + GPT partition + LUKS + LVM (grub overwrites LUKS header)

I'm trying to configure system to boot from one GPT encrypted LVM partition. But when I set partition type to 8300 grub-install complains on warning : this GPT partition label contains no BIOS boot ...
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26 views

Fedora custom uefi install

I would like to install Fedora workstation into a multi-boot system. I have Windows and Ubuntu dual booting. In the Fedora installation dialog, I am selecting the existing ubuntu /boot/efi (/dev/sde) ...
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67 views

Unable to mount 3TB GPT HDD

I have a little Problem, my Home-Server didn´t mount my 3TB GPT. Yesterday all was fine, this morning I realize that i cant go in my Network-Storage. First i thinked it was a network isue, but now i ...
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669 views

how to achieve optimal alignment for emmc partition?

We have bbb based custom board containing eMMC. And we have created partitions as follows, parted --script -a minimal /dev/mmcblk0 \ mklabel gpt \ mkpart primary 131072B 262143B \ mkpart ...
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1answer
36 views

LUKS on an internal hard drive

I have a hard drive which is encrypted using LUKS. It was originally an external hard drive. Recently I removed the casing and connected it directly (via SATA). However, when I connect it directly, I'...
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526 views

Check if partitions are aligned properly for performance?

I just created a GPT disk label for the entire space on my hard disk (/dev/sda) like so: # parted (parted) select /dev/sda (parted) mklabel gpt Warning: The existing disk label on /dev/sda will be ...
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47 views

Can grub2 on an MBR disk boot linux partitions on a GPT disk?

I have grub 2 running win 7 ultimate, win 8.1 and win 10 as well as 50 or so linux partitions that boot off of the grub 2. Can I add more entries to the grub 2 on one of the mbr disks that will boot ...
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95 views

Does the (GPT) partition table location change when moving from USB3 to SATA?

I have just opened an external USB 3.0 hard disk enclosure and mounted the disk instead internally in a PC via SATA. Now, the Linux system stops finding the GPT which was certainly there. Since ...
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245 views

'PARTUUID' in '/etc/fstab' and (hardware) RAID0 don't play well together, do they?

Fresh Arch Linux install on (hardware) RAID0 under 64-bit UEFI system with GPT partitions. Had to add MODULES="ext4 dm_mod raid0" HOOKS="base udev autodetect modconf block mdadm_udev filesystems ...
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47 views

Arch not recognising GPT drive

I just finished installing Arch and my 3TB GPT drive (this is not my boot drive) is not showing in arch. I initialised it as GPT on my windows 7 machine and that machine is still able to read from ...
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How could a typical partition scheme look like on a bootable thumbdrive with uefi and diskencryption?

I am now playing with uefi and read about some kind of basics, which seem to be: Create a partition table of type GPT Create an efi partition, type fat16 in this partition create a structure like /...
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306 views

installing kali linux in mbr (not gpt)

I previously dual booted kali and windows 7. There was no problem with that. Then I removed both of them and partition the drive using fdisk(for MBR). I cannot use GPT partition as my BIOS does not ...
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172 views

Determine Windows file-system on GPT partition

I have a laptop with SSD which has Windows 10 installed. I booted the laptop from USB flash drive into Ubuntu 14.04.3 and tried to find out the file system on partition 4. According to gdisk it has ...
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64 views

Does Linux use GPT flags?

As seen below in output of parted, Windows 8/8.1 seems to use flags in GUID partition entries: I guess that for example partition with hidden flag is not shown in Windows Explorer. However, does ...
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55 views

How does “parted” know the file-system type for GPT partitions?

parted utility somehow detects the file system on partitions on my GPT disk: I guess it does not do this based on partition type codes(seen in the gdisk output) because those would be 27(Hidden ...
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1answer
278 views

Gparted Shows HDD as unallocated

I've Windows 8.1 & I'm planning to install Kali Linux with it. However, at installation gparted shows the whole hard disk to be unallocated and a warning. The warning is as follows: /dev/sda ...
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182 views

Protective master boot record boot flag - GPT

On an HP Elitebook 8760w, the BIOS does not support GPT well and I have found that it does not like GPT formatted boot disks which is default for many *nix platform installers. FreeBSD and OpenSuse ...
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360 views

Turn MBR disk partition to GPT to install Fedora on it

I have windows 7 and want to install side by side Fedora 22. To install it I need to create GPT memory space. To do so, I open Start>Computer>Management>Disk management. I have only one disk present ...
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398 views

How to construct a GPT-only partition table on Linux?

All of the tools I've tried until now were only capable to create a dual (GPT & MBR) partition table, where the first 4 of the GPT partitions were mirrored to a compatible MBR partition. This is ...
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8k views

Debian 8 installation on UEFI / GPT system

I'm completely lost and need some advice to further explore the problem. Steps that I made: 1) Partitioned my hard drive using gparted. First partition is formatted to FAT32, has flags "boot", "esp" ...
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149 views

Advantage of GPT over MBR partition table [closed]

What is the advantage GPT partitioned hard drives on older BIOS system ? when boot drive is bellow 2TB on a BIOS system or UEFI boot disabled grub on BIOS system with GPT partitioned needs an ...
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353 views

Can't format HDDs and install linux to Dell hybrid ultrabook

I've tried installing OpenSUSE 13.2, Debian 8/8.1 and Ubuntu 15.04 (all them amd64). Debian/Ubuntu won't show disks and OpenSUSE can't format the partitions created on them. During the install, ...
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372 views

Problems with partition table on 3tb NTFS drive

I have a 3tb HDD which was formatted with NTFS and put in a USB enclosure. It was used under Windows and Linux, with no problems for a year. Recently it stopped mounting under Linux and Windows, and ...
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64 views

Can GRUB 2 handle GPT? [closed]

I have come across some articles that say grub can't normally handle GPT. Not sure if this is old facts or outright incorrect and what version of grub is being referred to. Can someone please explain ...
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818 views

“Warning! Secondary partition overlaps the last partition by x blocks” in gdisk, is it safe to use gdisk here?

I'm trying to install convert my hard drive into GPT using gdisk, when I run sudo gdisk /deve/disk1s4 I get this: Warning! Secondary partition table overlaps the last partition by 2032668853 blocks! ...
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partprobe equivalent on OS X

After I manually edited a partition table on a device in OS X, the corresponding devices don't get created automatically under /dev. How to I tell the OS X kernel to reread partition tables as I ...
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1answer
1k views

Remove all traces of GPT disk label

I've got an USB pen drive and I'd like to turn it into a bootable MBR device. However, at some point in its history, that device had a GPT on it, and I can't seem to get rid of that. Even after I ran ...
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53 views

testdisk partition recovery

Looking to recover data/partition index from this disk.. ⚡ root@jg  ~  ls /dev/disk/by-label lrwxrwxrwx. 1 root root 10 May 4 21:06 4tb1 -> ../../sde1 drwxr-xr-x. 7 root root 140 May 4 21:06 .. ...
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432 views

mdadm Software RAID1 with GPT on Debian 8.0 amd64 - Does not boot on disk removal [closed]

INTRO: I have spent countless days attaching/detaching MOLEX->SATA power cables, rebooting machines and trying hundreds of edits and commands. I am on the verge of desperation and desperately in need ...
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161 views

Accidentally installed BIOS/MBR on GPT/UEFI

Quite some time ago, I installed a Linux system on my moms laptop. And just recently I noticed I have installed and partitioned (with fdisk) a BIOS/MBR on a system, that already has UEFI. The machine ...
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1answer
2k views

How to initialize new disk for UEFI/GPT?

Background I'm setting up a new build, with all new hardware, tabula rosa. I want to have multiple Linux installations and common data partitions. From what I'e gathered so far, using new hardware ...
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166 views

Recognizing GPT partition table created with different logical sector size

I have a 3TB drive which I have partitioned using GPT: $ sudo sgdisk -p /dev/sdg Disk /dev/sdg: 5860533168 sectors, 2.7 TiB Logical sector size: 512 bytes Disk identifier (GUID): 2BC92531-AFE3-407F-...
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634 views

Linux can't see any of my partitions — The backup GPT table is not at the end of the disk

I'm trying to install Linux on my HP Pavilion 14 inch ultrabook, but without any success. At first I tried installing Ubuntu on it; everything went fine, I got into the Live DVD (yes I'm oldschool ...
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2k views

while installing centos error is that 'sda must have gpt label'

While trying to install CentOS 6.4 IN DUAL BOOT with win 7 there was this error "sda must have gpt label". I don't know how to fix it and I also don't want to repartition my hard drive.
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83 views

Backup and then wipe partition table from head of drive

I have a NTFS hard drive internally attached to my computer and it's causing problems with the other Windows installation on my dual (or triple?) boot machine. I'm not sure if the partition scheme is ...
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11k views

Creating EFI bootable GPT partition with gdisk on previous MBR, GPT Damaged

So this is a sister question to my previous one about partitioning for a UEFI boot loader. Parititioning for a UEFI boot loader, can LVM be used? Disclaimer: I don't give a flip about the data on it....
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2k views

Problems mounting GPT partitioned external HDD

My neighbor brought over a 3TB external hard drive saying that after loaning it out to a Windows user, her Mac is asking her "to initialize something" whenever she plugs it in to her computer. I'm ...