EFI, the Extensible Firmware Interface, is the firmware layer that initializes hardware before Windows loads. It checks CPU, ...

I was using Acronis and I accidentally delete the APFS partition on a MacBook Air and created an NTFS partition in its place. I did not delete the EFI partition before it. Then I deleted the NTFS ...

For anyone wondering how to do this from OS X, you can mount the EFI partition using the mount command. It's a FAT partition, but isn't marked as such, so you'll need to specify a partition type, for ...