The EFI System Partition (ESP) is a small partition that stores startup files used by a UEFI-based computer. On a typical Windows UEFI/GPT installation, it uses the FAT32 file system and normally has no drive letter. It helps the computer start Windows; it is separate from the partition containing your documents and installed applications. You may notice it while checking Disk Management or preparing to replace an SSD. Although it occupies little space, leaving it out of a system migration can leave you with a drive that contains Windows but cannot start it independently. This guide focuses on Windows UEFI/GPT systems. Other operating systems can use an ESP too, but […]
