00:00When Windows is installed in UEFI mode on a GPT disk, the system normally creates an EFI system partition, often
00:07called the ESP.
00:08The ESP contains boot files used by UEFI firmware.
00:12It is not simply another location for your personal documents.
00:16It is a special system partition used during the boot process.
00:20This is why deleting or modifying system partitions without understanding their purpose can make an operating system unable to boot.