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NTFS : ウィキペディア英語版
NTFS

NTFS (New Technology File System〔) is a proprietary file system developed by Microsoft. Starting with Windows NT 3.1, it is the default file system of Windows NT family.
NTFS has several technical improvements over FAT and HPFS (High Performance File System), the file systems that it superseded, such as improved support for metadata, and the use of advanced data structures to improve performance, reliability, and disk space utilization, plus additional extensions, such as security access control lists (ACL) and file system journaling.
== History ==

In the mid-1980s, Microsoft and IBM formed a joint project to create the next generation of graphical operating system. The result of the project was OS/2, but Microsoft and IBM disagreed on many important issues and eventually separated: OS/2 remained an IBM project and Microsoft worked on Windows NT.
The OS/2 file system HPFS contained several important new features. When Microsoft created their new operating system, they borrowed many of these concepts for NTFS. Probably as a result of this common ancestry, HPFS and NTFS use the same disk partition identification type code (07).
Using the same Partition ID Record Number is unusual, since there were dozens of available codes, and other major file systems have their own code. FAT has more than nine (one each for FAT12, FAT16, FAT32, etc.). Algorithms identifying the file system in a partition type 07 must perform additional checks.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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