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NTFS File System
Definition of the NTFS File System
By Tim Fisher Tim Fisher Senior Vice President & Group General Manager, Tech & Sustainability Emporia State University Tim Fisher has more than 30 years' of professional technology experience. He's been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire. lifewire's editorial guidelines Updated on March 17, 2022 Tweet Share Email Tweet Share Email Windows The Ultimate Laptop Buying Guide NTFS, an acronym that stands for New Technology File System, is a file system first introduced by Microsoft in 1993 with the release of Windows NT 3.1.
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It's the primary file system used in Microsoft's Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Windows 2000, and Windows NT operating systems. The Windows Server line of operating systems also primarily use NTFS. It's supported in other OSes, too, like Linux and BSD.
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macOS offers read-only support for NTFS. NTFS also stands for other terms, but none of them have anything to do with what's talked about on this page. These include not trusted for servers, never tested file system, new tools for storage, and no time for social.
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How to See If a Drive Is Formatted as NTFS
There are a few ways to check if a hard drive has been formatted with NTFS, or if it's using a different file system.Use Disk Management
The first and probably easiest way to view the status of one or more drives is to use Disk Management.
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See How Do I Open Disk Management in Windows? if you've never worked with this tool before.
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The file system is listed right here, alongside the volume and other details about the drive. Here's how to format a hard drive using Disk Management
Open File Explorer
Another way to check to see if a drive was formatted with the NTFS file system is by right-clicking or tap-and-holding the drive in question, directly from File Explorer. How to Open File Explorer in Windows 11 Then, choose Properties from the drop-down menu.
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Read what's next to File system in the General tab. If the drive is NTFS, it will read File system: NTFS.
Enter a Command Prompt Command
Yet another way to see which file system a hard drive is using it through the command-line interface.
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Open a Command Prompt (it might have to be an elevated Command Prompt in some versions of Windows), or Windows Terminal, and enter this to show various details about the C: drive, including its file system:
fsutil fsinfo volumeinfo C: Use the command fsutil fsinfo volumeinfo C: findstr "System" instead to trim down the results to show only the file system. To check a different hard drive, use that drive's volume letter in place of C:. If you don't know the drive letter, get an on-screen print-out using the fsutil fsinfo drives command.
fsutil fsinfo volumeinfo C: Use the command fsutil fsinfo volumeinfo C: findstr "System" instead to trim down the results to show only the file system. To check a different hard drive, use that drive's volume letter in place of C:. If you don't know the drive letter, get an on-screen print-out using the fsutil fsinfo drives command.
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NTFS Features
Theoretically, NTFS can support hard drives up to just under 16 EB. Individual file size is capped at just under 256 TB, at least in Windows 8, 10, and 11, as well as some newer Windows Server versions. NTFS supports disk usage quotas.
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These quotas are set by an administrator to restrict the amount of disk space that a user can take up. It's used mainly to control the amount of shared space someone can use, usually on a network drive. You can check free hard drive space without using disk usage quotas.
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File attributes previously unseen in Windows operating systems, like the compressed attribute and indexed attribute, are available with NTFS-formatted drives. Encrypting File System is another feature supported by NTFS. EFS provides file-level encryption, which means that individual files and folders can be encrypted.
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This is a different feature than full-disk encryption, which is the encryption of an entire drive (like what's seen in these disk encryption programs). NTFS is a journaling file system, which means it provides a way for system changes to be written to a log, or a journal, before the changes are actually written.
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This feature allows the file system to revert to previous, well-working conditions if a failure occurs because the new changes have yet to be committed. Volume Shadow Copy Service is an NTFS feature used by online backup service programs and other backup software tools to back up files that are currently being used, as well as by Windows itself to store backups of your files. Another feature introduced in this file system is called transactional NTFS.
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This allows software developers to build applications that either completely succeed or completely fail. Programs that take advantage of this don't run the risk of applying a few changes that do work as well as a few changes that don't, a recipe for serious problems.
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Transactional NTFS is a fascinating topic; you can read more about it on in these pieces from Wikipedia and Microsoft. NTFS includes other features as well, such as hard links, sparse files, and reparse points.
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NTFS Alternatives
FAT was the primary file system in Microsoft's older operating systems and, for the most part, NTFS has replaced it. However, all versions of Windows still support FAT, and it's common to find drives formatted using it instead of NTFS.
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The exFAT file system is a newer file system but is designed to be used where NTFS doesn't work well, like on flash drives. Some differences between NTFS and exFAT include fewer files per directory in the latter file system, but far greater drive sizes than the former.
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Other Not enough details Hard to understand Submit More from Lifewire What Is a File System and What Are the Different Kinds? How to Use the Format Command to Write Zeros to a Hard Drive How to use a System Repair Disc to Format the C Drive What Is a Volume Label of a Drive? What Is File Allocation Table (FAT)?
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What Does "Format" Mean in Computing? 3 Best Free Full Disk Encryption Programs 31 Best Free Backup Software Tools (October 2022) COMODO Disk Encryption v1.2 (Free Full-Disk Encryption) How to Format an SD Card to FAT32 11 Best Free Disk Partition Software Tools (Oct. 2022) 14 Best Free Hard Drive Testing Tools (October 2022) 35 Best Free Data Destruction Tools (October 2022) exFAT vs.
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