File Allocation Table: Difference between revisions

Revision as of 13:29, 18 October 2024

Revision as of 13:31, 18 October 2024

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===FAT64===

{{Infobox file system

| name = FAT64|full_name = FAT32DEVICE1

| full_name DEVICE1

[[Design of the FAT file system#FAT32|32-bit File Allocation Table]]<br />(with 28-bit cluster entries)

| full_name = DEVICE1

| developer = [[Microsoft]], [[Caldera UK|Caldera]]

| variants =

| introduction_date = August 1996 ([[Windows 95 OSR2]])

| partition_id = [[Master Boot Record|MBR]]/[[Extended Boot Record|EBR]]: {{ubli

| [[#FAT32|FAT32]]: <code>{{abbr|0x|Values in C-notation for hexadecimal numbers}}[[Partition type#PID_0Bh|0B]]</code><code>[[Partition type#PID_0Ch|0x0C]]</code> ([[Logical block addressing|LBA]]), e.a.

| [[Basic data partition|BDP]]: <code>EBD0A0A2-B9E5-4433-87C0-68B6B72699C7</code>

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| file_struct =

| bad_blocks_struct =

| min_volume_size = {{ubli

| 32&nbsp;[[megabyte|MB]] – 4.5&nbsp;[[kilobyte|KB]] (with 65525 clusters and 512 byte sectors)

| 256&nbsp;MB – 36&nbsp;KB (with 65525 clusters and 4&nbsp;[[kilobyte|KB]] sectors)

}}

| max_volume_size = {{ubli

| 2&nbsp;[[terabyte|TB]] (with 512&nbsp;byte sectors)

| 8&nbsp;TB (with 2&nbsp;KB sectors and 32&nbsp;KB clusters)

| 16&nbsp;TB (with 4&nbsp;KB sectors and 64&nbsp;KB clusters)

}}

| max_file_size = {{ubli

| 2,147,483,647 bytes (2&nbsp;GiB − 1 byte)<!-- 2^31 - 1 --> (without [[large file support|LFS]])

| 4,294,967,295 bytes (4&nbsp;GiB − 1 byte)<!-- 2^32 - 1 --><ref name="GB4" /> (with [[large file support|LFS]])

| 274,877,906,943 bytes (256&nbsp;GiB − 1 byte)<!-- 2^38 - 1 --> (only with FAT32+<ref name="DRDOS_FAT+_R2" />)

}}

| max_files_no = 268,173,300 for 32&nbsp;KB clusters<!-- 2^28 − 12 (reserved clusters) − 262144 (number of 32&nbsp;KB clusters for directory entries) -->

| max_filename_size = [[8.3 filename]] with [[OEM character set|OEM]] characters, <br />255 [[UCS-2]] characters<ref group="nb" name="NB_LFN_UNI"/> when using [[Long filename|LFN]]

| max_directory_depth = 32&nbsp;levels or 66&nbsp;characters (with [[Current Directory Structure|CDS]]), <br />60&nbsp;levels or more (without CDS)

| dates_recorded = {{ubli

| Modified date/time, creation date/time (DOS&nbsp;7.0 and higher only),

| access date (only available with [[ACCDATE (CONFIG.SYS directive)|ACCDATE]] enabled),<ref name="Microsoft_2006_ACCDATE" />

| deletion date/time (only with DELWATCH 2<!-- with Novell DOS 7, Caldera OpenDOS 7.01, DR-DOS 7.02 and higher -->)

}}

| date_range = [[Epoch of 1980-01-01|1980-01-01]] to [[Year 2100 problem|2099-12-31]] ([[Year 2108 problem|2107-12-31]])

| date_resolution = {{ubli

| 2&nbsp;seconds for last modified time,

| 10&nbsp;ms for creation time,

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}}

| forks_streams =

| attributes = [[FAT file attributes|Read-only]], [[FAT file attributes|hidden]], [[FAT file attributes|system]], [[FAT file attributes|volume]], [[FAT file attributes|directory]], [[FAT file attributes|archive]]

| file_system_permissions = Partial, only with [[DR-DOS]], [[REAL/32]] and [[4690 OS]]

| compression = Yes

| encryption =

| data_deduplication =

| OS =

| file_size_granularity = 1&nbsp;byte

}}