hard disk partition while you reinstall the system

diskpart.md

Use diskpart to partition hard disk while you want to reinstall your pc system

You can follow the few steps below

1. After you start you computer and in the system install interface,you can press shift F10 open terminal.
2. Then,type the below command:

diskpart
list disk
select disk 0
detail disk
clean
Create partition primary size=30720
active
format quick
lsit partition
create partition extended
create partition logical size=512000
format quick
Create Partition Logical
format quick
exit
exit

You can refer the article