Reply to post: EFI System Partition - FAT?

EFI System Partition - FAT?

!Pedant Alert

The UEFI Specification (Available here: https://uefi.org/specifications) makes it clear that the EFI System Partition is subtly different from vanilla FAT:

The file system supported by the Extensible Firmware Interface is based on the FAT file system. EFI defines a specific version of FAT that is explicitly documented and testable. Conformance to the EFI specification and its associate reference documents is the only definition of FAT that needs to be implemented to support EFI. To differentiate the EFI file system from pure FAT, a new partition file system type has been defined

( Unified Extensible Firmware Interface (UEFI) Specification, Release 2.10, Section 13.3)

One minor difference:

Note: Although the FAT32 specification allows file names to be encoded using UTF-16, this specification only recognizes the UCS-2 subset for the purposes of sorting or collation.

( Unified Extensible Firmware Interface (UEFI) Specification, Release 2.10, Section 13.3.1.2)

NN