Questions tagged [gpt]

Use this tag for GPT partition tables.

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15
votes
1answer
25k views

Dual boot windows on second harddrive, UEFI/GPT system

I'd like to install linux, but I don't want to risk damaging my current windows installation as I have heard a lot of horror stories. Fortunately, I have an extra hard drive. Can I install linux ...
1
vote
1answer
4k 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 ...
1
vote
2answers
629 views

4-drive RAID-6 implementation and GPT

My current idea is to create 1x software RAID-6 with 4 member drives using mdadm. Specifically, they would be 1TB HDDs on SATA in a small server. System: Linux Debian Jessie 8.6. That makes 2TB of ...
30
votes
1answer
41k views

Can GRUB2 share the EFI system partition with Windows?

I have an existing Windows 7 GPT installation, which already has a EFI System partition. I am now trying to install a Linux on a separate harddisk, which is also GPT formatted. I did not find any ...
9
votes
1answer
26k views

Using UUID's with mdadm

I'm using GPT as my partitioning scheme. I check the UUID's of my partitions: # ls -l /dev/disk/by-partuuid/ total 0 lrwxrwxrwx 1 root root 10 Oct 18 22:39 0793009a-d460-4f3d-83f6-8103f8ba24e2 -> ....
9
votes
2answers
649 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-...
0
votes
1answer
244 views

How to repair a 500GB HD showing itself as only 10MB?

I have a 500GB USB HD. I have been messing around with the dd cmd - erasing MBR data, copying my windows internal HD, eleting partitions, etc. fdisk -l returns Disk /dev/sdc: 10MiB, 10485760 bytes, ...
32
votes
5answers
141k views

Remove GPT - Default back to MBR

I keep receiving this error: Warning!! Unsupported GPT (GUID Partition Table) detected. Use GNU Parted I want to go back to the normal MBR. I found some advice here and did: parted /dev/sda ...
7
votes
3answers
15k views

Should I use fdisk for partitioning or GPT aware tools?

Question: Should I use fdisk when creating partitions? Or is it advisable to use parted since it uses GPT? (by default?) And with that I can create partitions larger than 2TB.
6
votes
2answers
4k views

Grub fails to install - Debian Wheezy with mdadm RAID1 and GPT partition table

I've been trying all day to get my new Wheezy install completed but it fail to install Grub every time. I'm using x64 netinstall iso. Here is my partition table: Model: ATA ST3000DM001-1CH1 (scsi) ...
12
votes
2answers
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?
4
votes
1answer
1k views

What happens to partition labels after removing a partition?

What will happen to all the remaining partition labels if I remove a single partition? For example if I have a layout that looks like this: /dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4 /dev/sda5 and if I ...
1
vote
1answer
963 views

Dual boot - Installed arch and windows entry disappeared on grub

I've installed Arch on a partition, and installed grup as the wiki says grub-install /dev/sda grub-mkconfig -o /boot/grub/grub.cfg Now I only get Archlinux and Advanced options and no Windows. ...
0
votes
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 ...
0
votes
1answer
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/...
0
votes
1answer
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.
-1
votes
2answers
220 views

how to boot an install disc in EFI mode?

Per this answer on how to create an EFI System Partition (ESP): (Quite likely though that the install disc itself must be booted in EFI mode, too, otherwise it won't bother setting up UEFI boot....