partition disk programmatically from cli

[endorama]

source: https://unix.stackexchange.com/questions/200582/scripteable-gpt-partitions-using-parted

solution

parted user manual

• replace /dev/sdb with your device.
• start from MiB
• end to -1MiB

# parted /dev/sdb --script -- unit MiB print free
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sdb: 204800MiB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 
# parted /dev/sdb --align optimal --script -- mklabel gpt mkpart primary ext4 1MiB 204799MiB

Disk is partitioned now:

# parted /dev/sdb --script -- unit MiB print free                                                    
Model: QEMU QEMU HARDDISK (scsi)
Disk /dev/sdb: 204800MiB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start      End        Size       File system  Name     Flags
        0.02MiB    1.00MiB    0.98MiB    Free Space
 1      1.00MiB    204799MiB  204798MiB               primary
        204799MiB  204800MiB  0.98MiB    Free Space