how to delete all partitions on hard drive?

How To Delete All Partitions On A Hard Drive Or SSD Using Windows 10

Delete single partition: right-click on a partition that you want to delete and choose “Delete…”. Delete all partitions: right-click a hard drive that you want to delete all partitions, and select “Delete All…”.

How to delete All Partitions from a Hard Drive (Diskpart, Clean, Windows 10)