Windows efi

Also, for missing files from unbootable computers, the Recoverit Data Recovery tool will be introduced to you to recover those files back. The article promises to be educative. EFI system partition ESP is a partition found on a storage device such as a hard drive, the files of which are used by UEFI Unified Extensible Firmware Interface to start different utilities, as well as the installed operating system i.

EFI partition creates various sections on the hard disk of your computer. The information stored in these different sections is normally managed on a separate basis by Windows OS.

EFI partition contains four major parts including device drivers, data files, boot loaders, and system utilities. Now, if the EFI partition is missing, there will be a problem with your system booting. While the boot loader UEFI in this case is tasked with loading all the necessary utilities and files before the booting sequence is complete, the ESP resolves any errors that could prevent the booting from being a success.

In a nutshell, if the EFI partition goes missing, your Windows will be unable to boot. Another method with which you can restore the EFI system partition is via clean installing Windows 10 altogether. The steps involved are:. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy.

Some information in this section may apply only to Windows 10 Mobile and certain processor architectures. UEFI is a general framework for boot loaders based on a standard UEFI specification, which describes a standard environment and set of interfaces for platform firmware that allows operating systems to boot. These applications should not be accessible to the end-user. OEMs that choose to implement UEFI applications should make sure that they have a small a memory footprint as possible and do not impact boot time.

A device running Windows 10 has several requirements for booting into the OS. After the device's firmware initializes all the hardware, the device needs to ensure that there is enough power to boot.

Afterwards, the device needs to ensure that the device is booting into the appropriate OS depending on if the user wants to perform an update or a restore on the device, or if the user wants to boot the device into the main OS. To accommodate each of these scenarios, the Windows 10 boot process uses the following components:.

The device is powered on and runs the SoC-specific firmware boot loaders, which initialize the hardware on the device and provide emergency flashing functionality. These applications can utilize UEFI drivers and services. This OS is used specifically for installing updates. Microsoft provides a UEFI flashing application which can be used in non-manufacturing scenarios.

The SoC firmware boot loaders initialize the minimal set of hardware required for the device to run. The SoC firmware boot loaders are designed to finish as fast as possible, and nothing is drawn to the screen while they are running. The SoC firmware boot loaders also contain an emergency flashing capability that allows devices to be flashed when the boot environment is not stable and Full Flash Update FFU image-based flashing using the Microsoft-provided flashing tool is not possible.

Emergency flashing requires tools specific to the SoC. For more information, contact the SoC vendor. Then boot computer from the bootable device. In the main window, right-click on the EFI partition that needs to get rid of and select Delete Partition. After that, the EFI partition has now become unallocated space, and you can add this unallocated space to any of the existing partitions by using the Merge Partitions function. If you delete the EFI partition on the system disk by mistake, then Windows will fail to boot.

On occasion, when you migrate your OS or install it on a hard drive, it may fail to generate an EFI partition and cause Windows boot issues. In this case, you can create a new EFI partition and then install an EFI boot loader in order to make the hard drive bootable.