Extent File System

{{Distinguish|Encrypting File System}}

{{Infobox file system

| name = Extent File System

| developer = Silicon Graphics

| full_name =

| introduction_date =

| introduction_os =

| partition_id =

| directory_struct =

| file_struct =

| file_types =

| bad_blocks_struct =

| bootable =

| min_volume_size =

| max_volume_size =

| max_file_size =

| file_size_granularity =

| max_files_no =

| max_filename_size =

| max_dirname_size =

| max_directory_depth =

| filename_character_set =

| dates_recorded =

| date_range =

| date_resolution =

| forks_streams =

| attributes =

| file_system_permissions =

| compression =

| encryption =

| data_deduplication =

| copy_on_write =

| OS = IRIX

| website =

}}

Extent File System (EFS) is an older extent-based file system used in IRIX releases prior to version 5.3. It has been superseded by XFS.