Also known as VFAT
family of file systems originally developed by Microsoft
Key facts
- Developer s
- Microsoft , NCR , SCP , IBM , Compaq , Digital Research , Novell , Caldera
- Full name
- File Allocation Table
- Variants
- 8-bit FAT, FAT12 , FAT16 , FAT16B , FAT32 , exFAT , FATX , FAT+
- Introduced
- 1977 ( 1977 ) with Standalone Disk BASIC-80
- Partition ids
- MBR / EBR : FAT12: Values in C-notation for hexadecimal numbers</span>"}]]}'>0x 01 e.a. (Extended Attribute) FAT16: Values in C-notation for hexadecimal numbers</span>"}]]}'>0x 04 0x06 0x0E e.a. FAT32: </span>"}]]}'>0x 0B 0x0C e.a. BDP : EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
- Directory contents
- Table
- File allocation
- Linked list
- Bad blocks
- Cluster tagging
- Max volume size
- FAT12: 32 MB (256 MB for 64 KB clusters) FAT16: 2 GB (4 GB for 64 KB clusters) FAT32: 2 TB (16 TB for 4 KB sectors )
- Max file size
- 4,294,967,295 bytes (4 GB − 1) with FAT16B and FAT32
- Max number span no of files
- FAT12: 4,068 for 8 KB clusters FAT16: 65,460 for 32 KB clusters FAT32: 268,173,300 for 32 KB clusters
- Max filename length
- 8.3 filename , or 255 UCS-2 characters when using LFN
- Dates recorded
- Modified date/time, creation date/time (DOS 7.0 and higher only), access date (only available with ACCDATE enabled), deletion date/time (only with DELWATCH 2)
- Date range
- 1980-01-01 to 2099-12-31 ( 2107-12-31 )
- Date resolution
- 2 seconds for last modified time, 2 seconds for creation time, 1 day for access date, 2 seconds for deletion time
- Forks
- Not natively
- Attributes
- Read-only, hidden, system, volume, directory, archive
- Transparent compression
- FAT12/FAT16: Per-volume, SuperStor , Stacker , DoubleSpace , DriveSpace FAT32: No
via Wikipedia infobox
Wikidata facts
- Instance of
- file system
- Developer
- Microsoft
Show 2 more facts
- inception
- 1977-00-00
- Stack Exchange tag
- stackoverflow.com/tags/fat
Sources (1)
via Wikidata · CC0
Article · 中文
檔案配置表（英語：File Allocation Table，首字母縮略字：FAT），是一種由微軟發明並擁有部分專利 的文件系統，供MS-DOS使用，也是所有非NT核心的Windows系统使用的檔案系統。 FAT文件系統考慮當時電腦效能有限，所以未被複雜化，因此幾乎所有個人電腦的作業系統都支持。這特性使它成為理想的軟碟和記憶卡檔案系統，也適合用作不同操作系统中的資料交流。 但FAT有一個嚴重的缺點：當文件刪除後寫入新資料，FAT不會將檔案整理成完整片段再寫入，長期使用後會使檔案資料變得逐漸分散，而減慢了讀寫速度。碎片整理是一種解決方法，但必須經常磁碟重組來保持FAT文件系統的效率。
Abstract from DBpedia / Wikipedia · CC BY-SA