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EFI System Partition Subdirectory Registry

Originally implemented by the DIG64 Consortium, this is an industry registry of vendor-specific subdirectory names in the EFI system partition described in the UEFI Specification.  The registry aims to ensure fair, orderly, consistent and conflict free naming of files as well as help facilitate industry-wide best practices for the Directory Structure in the EFI system partition.  This list is voluntary and minimally administered.  Participation in the Registry or use of this information is at your own risk.

Directory Name Absolute Path Name Registered To (For Use By):
Apple /EFI/Apple Apple, Inc.
AMD /EFI/AMD Advanced Micro Devices, Inc.
AROS /EFI/AROS AROS Development Team
BOOT /EFI/BOOT Unified EFI Forum, Inc., use defined by the UEFI Specification
Bull /EFI/Bull Bull
Dell /EFI/Dell Dell, Inc.
FSC /EFI/FSC Fujitsu Siemens Computers
Hitachi /EFI/Hitachi Hitachi, Ltd.
HP /EFI/HP Hewlett Packard
HPUX /EFI/HPUX Hewlett Packard
IBM /EFI/IBM IBM
Insyde /EFI/Insyde Insyde Software
Intel Firmware /EFI/Intel Firmware Intel
Kontron /EFI/Kontron Kontron AG
MICROSOFT /EFI/MICROSOFT Microsoft
MSI /EFI/MSI Micro-Star International Co., Ltd
MSUtil /EFI/MSUtil Microsoft
NEC /EFI/NEC NEC Corporation
Phoenix /EFI/Phoenix Phoenix Technologies
Portlock /EFI/Portlock Portlock
Redhat /EFI/Redhat Red Hat Inc.
Suse /EFI/Suse SuSE Inc.
VMS /EFI/VMS Hewlett Packard

To register a new subdirectory

Send a request to the UEFI Specification Workgroup Chairperson.  All requests are subject to Work Group approval based on the ojectives noted above.