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GUID Partition Table – parted

lets assume that you want to create a new GPT layout on a disk.
From command line you can use parted

In the below example disk is 10Gb.

We will create a boot partition 128Mb, a root partition 8Gb and a swap partition with the rest size of the disk.

Contents

Select disk

parted
 
select /dev/sda
 
print

mklabel gpt  
print

Select mebibyte for start – end size values

unit MiB

create a primary boot partition

mkpart primary ext2 1 129
name 1 bootfs

Make partition, bootable :

set 1 boot on

mkpart primary ext4 129 8321
name 2 rootfs

give swap partition the rest avaliable size of the disk

mkpart primary linux-swap 8321 -1
name 3 swapfs

gdisk -l /dev/sda