Without at least one partition, Windows wouldn’t know where to save files, which would make the storage device next to useless.
You can think of a partition as a container for data stored on a storage device, such as an internal hard drive or USB flash drive. Here’s a textbook definition of partition : A section of the storage device that is separated from other segments. While you don’t need to understand how partitions work to recover one, having at least a very basic understanding of their role in allowing you to store data on a storage device can help you choose the best possible recovery approach and avoid making a potentially disastrous mistake.
Method 1: Recover Deleted Partition Using CMD.How to Recover Deleted Partition on Windows 10.Before You Start Recovering Your Partition.How Do Partitions Get Deleted or Become Inaccessible?.