Questions tagged [gpt]

Use this tag for GPT partition tables.

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61 views

Grub not starting after moving drives

So I've got a Debian 9 machine with 5 hard drives in it. I tried moving these drives to a new machine and hoping they would boot. When I did this, I got "normal.mod not found" and it kicked me to grub ...
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1answer
70 views

On UEFI laptop, Linux Mint has crashed twice

In the last 2 months, I have installed Linux Mint 19.1 on two laptops. On the older of the two, a Samsung Rv511 (ca. 2011) using MBR partitioning, there have been no problems at all. Linux Mint has ...
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2answers
64 views

How to determine if a PC has a combination of GPT disk and legacy BIOS boot, where the boot code is read from the MBR?

In a comment, Johan wrote: In the rare combination GPT disk + legacy BIOS boot, the boot code is read in the old-fasioned way from the MBR What is the proper way to determine if a PC has the ...
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Mounting windows server 2016 Azure VM GPT basic NTFS partition on linux

I have an azure blob (a .vhd disk) which is a copy of a windows data disk created by taking a snapshot of the live disk, then copying that snapshot to a temporary blob, which is the blob I have ...
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1answer
63 views

How to recover lost data after disk MBR to GPT conversion?

When I curiously selected to "create a new partition table" and the new type of it is GPT, GParted poped a warning message that "I may loss all...", but I still clicked yes, as I thought all the ...
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1answer
23 views

GPT header Backup

The first 512 bytes of MBR disk contains boot code and partition table, backing up (dd command) this area is useful. I have switched to GPT right now, and want make a backup, is it in the same way to ...
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2answers
144 views

Kali Linux installation on USB drive

I want to install Kali Linux on a 64 GB USB drive and want to take it just anywhere and plug it in any PC and have my setup up and running. IOW I just want a HDD like complete Kali Linux portable ...
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56 views

unable to create a bootable USB Debian Stretch disk using LVM with GPT partitions

I'm stuck for several days whith a issue when I try to create a bootable USB disk GPT partitonned. I would like this disk to be like a bootable "backup" disk for my live system. (In fact the system ...
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2answers
166 views

How to mount a device of gpt type?

In Linux Mint 18.3 which boots from an HDD, I want to mount an external SSD. When I run the command sudo fdisk -l, I get all the drives and partitions as well as the SSD and when I run sudo blkid, I ...
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1answer
207 views

What do the partition table types and flags mean in the output of parted?

In the output of sudo parted -l: Model: WD My Passport 0748 (scsi) Disk /dev/sdb: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size ...
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1answer
50 views

In GPT, can a partition be partitioned further into partitions?

I heard that GPT makes MBR's distinction between primary partition, logical partition, and extended partition disappear. In GPT, can a partition be partitioned further into partitions, in the same ...
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109 views

Installation and booting scenarios for combinations of boot sector (GPT or MBR), firmware (BIOS or UEFI)?

I think all the confusions in this post come from coexistence of old and new technologies and abuse of terminology such as mentioned in https://en.wikipedia.org/wiki/...
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58 views

What is a generic name for the sector which stores the partition table of a disk?

If a disk uses GPT partitioning method, is its first sector still called MBR? What is a generic name for the sector which stores the partition table of a disk? Thanks.
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17 views

How to diagnose the difference in OS performance between installation media?

I have two different USB sticks, a 128 GB Samsung and a 64 GB SanDisk. I used Gnome Disks to benchmark both of them and the Samsung one was supposedly better, it had faster read and write speed but it ...
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3answers
317 views

How install legacy grub to gpt uefi disk?

I have new computer with UEFI. I formated the disc as GPT (not MBR), made few small partions on start (as placeholders for UEFI, for boot, for swap etc ...) then larger partition for system / (and ...
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1answer
338 views

Am I able to install Arch Linux with the 100MB EFI partition that Windows 10 had already created on installation?

I want to dual-boot Arch Linux alongside Windows 10, which is already installed. I am using UEFI-GPT. On Windows 10 installation, it creates an EFI system partition as required by UEFI. This ...
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1answer
60 views

Dual Boot Linux Partition shows as Partition Table: loop in parted (Why?)

Recently I was checking into my partition scheme on my dual boot laptop (Peppermint OS, Windows 10). I was surprised by the output from parted /dev/sda12 (my Linux root partition) Model: Unknown (...
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23 views

Realigning GPT partitions to 4k sector boundaries?

If I have an HDD with GPT, and the partitions are not aligned to 4k sector boundaries, is there a tool to realign the partitions to 4k sector boundaries? Suppose I have UEFI stuff on the HDD in ...
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1answer
732 views

How to force GPT partitions in kickstart for Oracle Linux 6

I want to configure OL6 kickstart to install a system that boots from BIOS but uses GPT partitioning instead of MBR, even for disks <2TB. The relevant part of my kickstart file looks like this ($...
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1answer
29 views

Are timestamps created with new GPT partition tables?

Are timestamps created with new GPT partition tables? If so, where are they (i.e, headers, entries, GUIDs, labels)? How are they accessed?
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4k views

Will dd if=/dev/zero of=/dev/sda wipe out a pre-existing partition table?

Will # dd if=/dev/zero of=/dev/sda wipe out a pre-existing partition table? Or is it the other way around, i.e, does # fdisk /dev/sda g (for GPT) wipe out the zeros written by /dev/zero?
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Can't install Fedora 29 on Thinkpad W550s due to GPT

I have a Lenovo Thinkpad W550s that already has Windows 7 on it. I would like to install Fedora 29 Workstation alongside Windows 7, but I have run into some problems. The hard drive was formatted ...
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762 views

How to create a bios_grub partition during installing openSUSE?

When installing openSUSE Tumbleweed, I get a red warning before the last confirmation: Boot from MBR does not work together with btrfs filesystem and GPT disk label without bios_grub partition. To ...
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1answer
27 views

GPT has incorrect entries

Through some series of commands, I managed to end up with a disk that is supposed to contain one ext4 partition, but fdisk, parted, and blkid all insist it contains an Apple RAID slice, which it used ...
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1answer
278 views

Problem with instaling GRUB/LILO in dual boot with windows 10 UEFI/GPT

I am having some issues when trying to install Debian 9 alongside Windows 10. Everything goes smoothly until the GRUB installation comes up. After I pick the partition it starts to install and after ...
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1answer
726 views

Mounting GPT partition table in linux

I have a drive that I'm trying to mount in linux. The device is /dev/xvdf. lsblk shows two subdrives, /dev/xvdf1 and /dev/xvdf9 sudo file -s /dev/xvdf tells me that /dev/xvdf is a "GPT partition ...
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1answer
116 views

How to extend size of mounted ext4 /home gpt partition without loss of data?

I have GPT partitioning for my drive: $ sudo fdisk -l /dev/sda Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): ...
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1answer
2k views

Can I change an existing partition from MBR to GPT?

I needed to add extra 2.5TB to the existing 400GB disk (sda) on my system. I added new virtual disks with 2.5TB (sdb), proceeded to create the partition table with fdisk. Used pvcreate /dev/sdb1, to ...
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390 views

Problem mounting and reading hard disk

I am trying to read the content of a 1Tb external disk. The device was part of an external nas (dlink 320) using raid 1. when I plug the hard disk using the usb port no partition is mounted. The ...
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1answer
657 views

Partion table mmcblk0boot0 device

I created two GPT partitions in /dev/mmcblk0boot0 device. Now I want to format one of them. But I don't have any idea how to access to a single partition. When I created partitions on "normal" device ...
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1answer
1k views

Fsck on partition inside RAID broke file system AND RAID

What was: RAID 1 with mdadm on whole disks say /dev/md0 from /dev/sda and sdb, GPT with one partition on md0 and ext4 on this partition (md0p1). What I think happens: after changing motherboard linux ...
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1answer
945 views

booting gentoo using uefi and gpt

I just used the amd64 minimal installation iso (installed on usb drive) to install and configure gentoo linux with the following make.conf: CFLAGS="-march=native -O2 -pipe" CXXFLAGS="${CFLAGS}" ...
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1answer
1k views

What is PARTUUID from blkid when using msdos partition table?

I use msdos partition table, so there is no PARTUUID supported (it's only on GPT partition tables) root@xenial:~# fdisk -l Disk /dev/sda: 200 GiB, 214748364800 bytes, 419430400 sectors Units: sectors ...
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1answer
2k views

Backup boot record of GPT disk

I know how to use dd to backup the boot record of a MBR partitioned disk, but how do I backup the boot record of a GPT partitioned disk? (I use sgdisk to backup the partition table, but also need the ...
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2answers
86 views

How to migrate partitions/file systems/swap to a new drive without any data using a shell script?

Wishing to replace the system drive with near identical sized new and fresh SSD, or even a larger one, leaves me with a puzzle. dd is great and I can't use that bit-by-bit copy technique f.e. because ...
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2answers
7k views

How to install rEFInd for DIY multiboot USB

I intend to create a dualboot persistent usb. I'd like to try creating a USB where I can boot macOS High Sierra and WIndows 10. From what I understand of LVM, I can create 2 VG, 1 APFS and 1 NTFS. ...
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1answer
136 views

Saving a modified GPT partition map to a file in GParted or similar tools

I can use sgdisk -b /dev/sdx to save the GPT partition map of a disk to a file. I want to generate such a file for a GPT with one partition of a certain size. The only way I can see to do this is to ...
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How to fix corrupt GPT table backup?

I'm having an issue which I'm having a hard time trying to fix with a USB stick. I was trying to get this USB formatted cleanly and ready to be used for a USB Installer, but for some reason it's ...
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2k views

Creating GPT partitions with preseed

I am installing Ubuntu 16.04 with iPXE and trying to create GPT partitions with preseed as follows: d-i partman-basicfilesystems/choose_label string gpt d-i partman-basicfilesystems/default_label ...
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1answer
106 views

Does Fedora's inst.gpt command exist in other distros?

I have recently found this inst.gpt boot flag in Fedora useful as it allows me to say up a GPT drive on a non-UEFI BIOS system, does it also exist in a different form on other distros? If not would it ...
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2answers
202 views

Wiping the boot partition of a GPT disk in Solaris 11.3

I have a 4-way mirrored rpool on a set of GPT disks running Solaris 11.3 (GPT being used as the disks are more than 2TB in size) on x86 hardware. Disks 1 and 2 are the "main" operating system. Disks ...
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1answer
2k views

using parted to resize partitions using free space in the end of the disk

I have RH6 wtith GPT disk, which is partitioned as following: parted /dev/sdb print free Model: IBM ServeRAID M5110e (scsi) Disk /dev/sdb: 4599GB Sector size (logical/physical): 512B/4096B Partition ...
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1answer
894 views

File system block size differs between different ext4 partitions

we have BBB based custom board with 256MB RAM and 4GB eMMC, I have partitioned it using below code, parted --script -a optimal /dev/mmcblk0 \ mklabel gpt \ mkpart primary 128KiB 255KiB \ ...
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1answer
432 views

Can I install using GPT on 32 bit system with bios?

All I search for this says, makes me understand that GPT is related to UEFI, but is it possible to install using GPT disk format, in a 32 bit system using bios (not legacy mode)? I tried installing ...
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1answer
432 views

linux gdisk (on 4TB USB drive) followed my mkfs — but mkfs doesn't see new partitions

I just bought two new 4TB external USB disks for backups http://www.bestbuy.com/site/wd-my-passport-4tb-external-usb-3-0-portable-hard-drive-black/5605533.p that came performatted with a single ...
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1answer
371 views

Changing partition dev path

I have a UEFI system that I installed Arch Linux on beside Windows, then later removed Windows and made it Linux only, keeping the EFI boot partition of course. After removing all Windows and recovery ...
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4answers
3k views

Are there extended partitions in GPT partition table?

Under the MBR model, we could create four primary partitions one of which could an extended partition that's further subdivided into logical partitions. Consider this GPT schematic taking from ...
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2answers
6k views

Changing from MBR to GPT

I'm trying to completely remove linux from my machine to make way for Windows, but to do that I need to change my disk type to GPT instead of MBR. I have a bootable usb with Ubuntu on it that I can ...
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1answer
4k views

What is UUID, PARTUUID and PTUUID?

In blkid output some lines contain UUID and PARTUUID pairs and others only PTUUID. What do they mean? In particular, why two IDs are required for partition and why some partitions are identified by ...
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2answers
3k views

Resizing the ESP /boot/efi partition

I have an existing Debian 9 installation on a 2 TB GPT formatted internal SSD/SATA hybrid hard disk on a brand new Acer laptop. The entire Debian install takes up a mere 600 GB of the hard drive. No ...