How to delete recovery partition in Windows 7/8/10?

There are basically two kinds of recovery partitions in Windows systems:
– Windows recovery partitions
– and computer supplier’s recovery partitions.
Windows recovery partition allows you to boot into Windows recovery environment (WinRE) to restore your computer when problems happen, while the recovery partitions created by manufacturers allow you to press a specific key (for example: F9 for HP or F12 for Dell) to recover your computer to the factory default settings.
If you see a few gigabytes recovery partition in Disk Management, it is definitely included by computer manufacturers such as Dell, HP or Lenovo. This recovery partition contains an image of everything pre-installed along with operating system. On some computers, it is labeled as OEM reserved partition. You may also see a recovery partition with several gigabytes space and an OEM partition that is less than 100 MB.
You may not know that but you are not allowed to delete recovery partition in Windows Disk Management but you can use DISKPART command to delete partitions from command prompt (of course, you are doing this on your own risk):
1. Run Command Prompt (CMD) as administrator.
2. In CMD run: diskpart
3. Next display all your disks with: list disk
4. Then select disk with Recovery Partition (for example): select disk 2
5. Display all partitions on your disk: list partition
6. Select the correct partiotion (those with label Recovery, for example): select partition 3
7. delete partition override