
But in the circumstance where you still delete it by mistake, what can you do? How to solve the "No EFI Partition Was Found" error? In one word, without EFI partition, you fail to boot your Windows. This is because the EFI partition is well protected and locked by the Windows operating system in case of your accidental deletion to cause the failure of a bootable OS. Due to its critical importance, you cannot view it in File Explorer directly because it doesn't have a drive letter and you can open Disk Management to find it.

Is EFI partition necessary?Īs we can see, the EFI partition is necessary to guarantee the Windows OS will be booted successfully. So when we boot the PC, hardware and firmware will be woken up first, and then firmware trigger the files and utilities stored on the EFI partition, finally, the Windows OS runs successfully. Generally, if your Windows are on a GPT disk, the EFI partition will be generated to store the important files and necessary utilities which are loaded by UEFI firmware to start the operating system. The EFI system partition(ESP), a small partition on a data storage device, is formatted with FAT32 and usually around 100MB. To figure out the consequences if there is no EFI partition, let's have a fundamental understanding of the two following questions. What will happen if there is no EFI partition? The most possible reason is that you have deleted the EFI partition by accident at some time you use the computer. If you are a computer novice, you are likely to ignore the importance of the EFI system partition, which will lead to the error described above. Can I recover the EFI system? Any advice will be appreciated!''

I don’t understand much about what I should do. I was ready to format and install software on my desktop but I got an error message saying that no EFI system partition was found. ''My computer is Windows 10 and I encountered a big problem this morning.
