Editing NTFS (section)

=== Versions ===
Microsoft has released five versions of NTFS:
{| class="wikitable"
! NTFS version number
! First operating system
! Release date
! New features
! Remarks
|-
|{{rh}}| 1.0
| [[Windows NT 3.1]]
| 1993<ref name="Custer, Helen" />
| Initial version
| NTFS 1.0 is incompatible with 1.1 and newer: volumes written by Windows NT 3.5x cannot be read by Windows NT 3.1 until an update (available on the NT 3.5x installation media) is installed.<ref>{{cite web|url=http://support.microsoft.com/kb/q129102/|title=Recovering Windows NT After a Boot Failure on an NTFS Drive|date=November 1, 2006|publisher=Microsoft}}</ref>
|-
|{{rh}}| 1.1
| [[Windows NT 3.5]]
| 1994
| Named streams and [[access control list]]s<ref name="insidewin2kntfs">{{cite web |url=https://learn.microsoft.com/en-us/previous-versions/ms995846(v=msdn.10) |title=Inside Win2K NTFS, Part 1 |last=Russinovich |first=Mark |author-link=Mark Russinovich |website=[[Microsoft Learn]] |date=30 June 2006 |publisher=[[Microsoft]] |access-date=2008-04-18}}</ref>
| NTFS compression support was added in [[Windows NT 3.51]]
|-
|{{rh}}| 1.2
| [[Windows NT 4.0]]
| 1996
| [[Security descriptor]]s
| Commonly called NTFS 4.0 after the OS release
|-
|{{rh}}| 3.0
| [[Windows 2000]]
| 2000
| Disk quotas,  file-level encryption in a form of [[Encrypting File System]], [[sparse file]]s, [[NTFS reparse point|reparse points]], [[USN Journal|update sequence number (USN) journaling]], distributed link tracking, the <code>$Extend</code> folder and its files
| Compatibility was also made available for Windows NT 4.0 with the Service Pack 4 update. Commonly called NTFS 5.0 after the OS release.<ref>{{cite web |url=http://www.microsoft.com/ntserver/nts/exec/overview/NT4SP4whatnew.asp |title=What's New in Windows NT 4.0 Service Pack 4? |date=12 January 1999 |website=Microsoft.com |access-date=17 August 2018 |url-status=dead |archive-url=https://web.archive.org/web/19990117055557/http://www.microsoft.com/ntserver/nts/exec/overview/NT4SP4whatnew.asp |archive-date=17 January 1999}}</ref>
|-
|{{rh}}| 3.1
| [[Windows XP]]
| October 2001
| Expanded the [[#Master File Table|Master File Table]] (MFT) entries with redundant MFT record number (useful for recovering damaged MFT files)
| Commonly called NTFS 5.1 after the OS release. LFS version 1.1 was replaced by version 2.0 as of Windows 8 to improve performance.
|}

The {{code|NTFS.sys}} version number (e.g. v5.0 in Windows 2000) is based on the operating system version; it should not be confused with the NTFS version number (v3.1 since Windows XP).<ref>{{cite web |archive-url=https://web.archive.org/web/20061116110405/http://support.microsoft.com/kb/310749 |url=http://support.microsoft.com/kb/310749 |title=New Capabilities and Features of the NTFS 3.1 File System |publisher=Microsoft |date=1 December 2007 |archive-date=Nov 16, 2006}}</ref><ref>{{cite web |url=https://www.ntfs.com/ntfs_basics.htm |title=NTFS Overview |publisher=LSoft Technologies Inc.}}</ref>

Although subsequent versions of Windows added new file system-related features, they did not change NTFS itself. For example, [[Windows Vista]] implemented [[NTFS symbolic link]]s, [[Transactional NTFS]], partition shrinking, and self-healing.<ref>{{cite web |url=http://download.microsoft.com/download/5/b/9/5b97017b-e28a-4bae-ba48-174cf47d23cd/STO123_WH06.ppt |title=Storage improvements in Windows Vista and Windows Server 2008 |publisher=Microsoft |access-date=2007-09-04 |format=PowerPoint |pages=14–20 |last=Loveall |first=John |year=2006}}</ref> NTFS symbolic links are a new feature in the file system; all the others are new operating system features that make use of NTFS features already in place.