It is protected and locked by the Windows system partition to avoid any accidental deletion. To protect these important files, the EFI partition is not assigned with a drive letter by Windows and cannot be seen in File Explorer. Lots of important files including operating systems, driver files, and system utility programs are stored in the partition. Usually, you can see the EFI partition in Disk Management. The EFI system partition (ESP) is formatted with a file system after you successfully install Windows OS or Mac OS X on a GPT disk. But when I click around there is no option to remove the EFI. I want to remove the EFI System Partition and reformat the entire drive. I have a 2nd drive which has an EFI System Partition of 750MB and an unused partition of 118GB. Why can’t delete EFI partition in DM? Are there any alternatives for the EFI system partition delete? Let’s start exploring these questions now. When deleting the EFI system, drive C, and OEM in Disk Management, lots of users may find the Delete Volume feature is grayed out.

How to Delete EFI Partition in Windows 10.

What You Need to Do Before Deleting EFI Partition.

Why the EFI System Partition Cannot Be Deleted.

Windows 10 delete oem partition