fdisk

fdisk /dev/sda
m: print menu
n: new partition

• p: primary
• e: extended
• -->1: partition number
• -->first sector
• -->last sector
• ---->sizeG|K|M
• p: verify - print partition
• (type 83 is the default)
• t: type
• -->l: list available types
• w: write - commit changes

Run partprobe -s 

partprobe forces Linux to recognize new partition without rebooting