NTFS (New Technology File System) is the default file system for Windows NT and its derivatives (2000, XP, Vista, 7, 8, Server 2003 and 2008).

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“This file came from another computer…” - how can I unblock all the files in a folder without having to unblock them individually?

Windows XP SP2 and Windows Vista have this deal where zone information is preserved in downloaded files to NTFS partitions, such that it blocks certain files in certain applications until you "unblock"...
102
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5answers
3k views

Why the heck does NTFS allow invisible executables?

You can hide any file inside of another file just by typing: type sol.exe > container.txt:sol.exe and to run the file hidden file just use: start c:\hide\container.txt:sol.exe But the crazy ...
94
votes
6answers
288k views

Why should I use exFAT over NTFS on removable media?

So, basically I always format my removable mass storage devices as NTFS by default, but someone told me I was better off using exFAT. Now I've been looking around google, but can't find any good ...
80
votes
1answer
8k views

How can a file's size on disk be 0 bytes when there's data in it?

I have a file in Windows 10 with 362 bytes of data, but the "size on disk" is just 0 bytes. It's a simple "Hello world" program written in assembly, and saved in Notepad++. How is it possible that ...
51
votes
6answers
5k views

Doesn't metadata occupy any size?

I put 4096 characters in a text file and save it.Since every character is 1 byte, Size of the text file must be 4K byte.As you see below that's OK: I connect my flash memory to my computer. the ...
45
votes
3answers
20k views

What is the difference between NTFS hard links and directory junctions?

The title says it all... what's the difference? When do I use one and when do I use the other? Added: Note that Junction points, Hard links and Symbolic (soft) links are three separate things on NTFS....
44
votes
4answers
25k views

How does NTFS compression affect performance?

I've heard that NTFS compression can reduce performance due to extra CPU usage, but I've read reports that it may actually increase performance because of reduced disk reads. How exactly does NTFS ...
42
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3answers
60k views

Max files per directory on NTFS vol vs FAT32

What's the max number of files that can be present in a directory on a NTFS volume? Same question for a directory for FAT32 volume?
34
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6answers
86k views

What “allocation unit size” should I use for a drive with a single NTFS partition?

I'm formatting a 1TB external hard drive as a single NTFS partition. This drive is mainly meant for storing media. Should I choose something other than the default allocation unit size? The options ...
31
votes
3answers
38k views

Permissionless external drive with NTFS

I have an external hard disk which has 1 partition, formatted in NTFS. I use this drive on multiple computers with a different logins on different machines, Windows XP and Windows 7. All files are ...
30
votes
2answers
13k views

How do I remove a file named “NUL” on Windows?

I have a Windows XP box (NTFS filesystem) on which I found a file named NUL. I have not been able to remove this file in any usual way. The file appears to be owned by Administrator in the SYSTEM ...
29
votes
3answers
2k views

Is NTFS really secure?

I have Mac PC, in which I have created a Windows partition and have installed Windows using Boot Camp. If I log in to the Mac OS, I can read all the files from the Windows partition from Mac. If I ...
28
votes
1answer
28k views

How to mount an NTFS partition read-only in Windows?

I feel like this is a really simple and fundamental function that Windows should have, but so far Google has been telling me it isn't possible. How can I mount an NTFS partition read-only in Windows? ...
27
votes
11answers
159k views

How to delete files and folders that cannot be deleted?

I have a backup copy of a previous Windows' Documents and Settings folder which only contains my original user and within 2 more directories: Favorites and Local Settings. When I try to delete Local ...
27
votes
6answers
39k views

How do you make Windows 7 fully case-sensitive with respect to the filesystem?

I want to make Windows 7 case-sensitive when it reads/writes anything on the hard drive (the C drive, or any other NTFS drive). I found a video via google that says to change the registry key ...
26
votes
1answer
1k views

Non-hidden directory doesn't show in Explorer, but the program that made it can access it

I'm using IMAPSize to backup my mailboxes. The process just dumps the contents of your mailbox into .eml files on your disk. Anyway, the first mailbox I backed up shows up as I expect. However, the ...
26
votes
5answers
41k views

How to hide desktop.ini files without hiding other hidden files/folders?

Is there anyway to hide desktop.ini files, but unhide them when I need them? They get in the way when I'm moving files and such but I do use them so deleting them isn't an option.
25
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2answers
22k views

View a list of symbolic links on system?

Is there a way to see a list of all the symbolic links that are active on a Windows machine?
24
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3answers
114k views

How to copy files to read-only NTFS hard drive on a Mac?

I want to copy my some files from Mac (Macbook-Air) to an USB external hard drive, formatted as NTFS. How is it possible? Because when I do copy my files from the Mac and go to paste them on the ...
23
votes
3answers
1k views

Why don't file managers use the Master File Table for instant search results? [closed]

I've just discovered UltraSearch and was blown away by its file and folder search speed. It's instantaneous. And doesn't use any indexing service. It simply uses the NTFS Master File Table, which ...
23
votes
2answers
18k views

Why did defragmenting C drive increase my free disk space by 10 GB?

I used Defraggler to defragment free space on my 100 GB C:\ drive which was 85 GB full. After defragmentation, the drive showed only 75 GB full. How did 10 GB  of free space ...
21
votes
4answers
20k views

Using mklink /h results in “Access is denied.”

From command prompt with Administrator privilages: c:\>mklink /h c:\dirA c:\Users\Piotr\dirB Access is denied. I'm on Vista x64. Using /j or /d instead of /h works. What's the problem? Related: ...
20
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3answers
3k views

Does Windows 8 have to be installed on NTFS?

Does Windows 8 need to be installed on an NTFS partition or does it just like to be on one? If I installed it on NTFS and then copied all its files on to a FAT32 partition would it work or would it ...
20
votes
4answers
54k views

How do you defragment the MFT on an NTFS disk?

A while ago, I nearly filled my hard drive, much more than the recommended maximum of 85% of capacity. I believe that NTFS started storing files in the space reserved for the Master File Table (MFT) ...
19
votes
3answers
1k views

Does a hard drive remember bad sectors after formatting?

On an NTFS-formatted hard drive with some bad sectors, does the hard drive still remember bad sectors after Windows's diskpart clean is used to remove the NTFS volume? What about clean all?
19
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3answers
4k views

Why is NTFS case sensitive?

I personally thought that NTFS was case insensitive, since you can type cmd, CMD, cMd or even CmD and still get the command prompt. However, why is it that during a CHKDSK x: /f /r, sometimes it fixes ...
19
votes
10answers
66k views

Running chkdsk on a disk partition without a drive letter

I have a hard drive that shows up in Disk Management as having two partitions. One of the partitions says 69.71GB and that's it. The other says 4.82GB and, underneath that, Healthy (OEM Partition). ...
18
votes
8answers
50k views

Creating and formating a partition using a bash script

Is there any way to create and format a partition using a bash script? I think it can be done with fdisk but I don't know how to feed commands from the bash script into the fdisk shell then exit the ...
18
votes
3answers
6k views

Bad NTFS performance

Why is it that NTFS performance is so lousy compared to, for example, Linux/ext3? Most often I see this when checking out (large) source trees from Subversion. Checkout takes around 10-15 minutes on ...
18
votes
4answers
56k views

fsck an ntfs drive in Linux

Is there a way to fsck/chkdsk an NTFS drive from Linux?
18
votes
1answer
145k views

What are “reparse records”?

My computer just did a chkdisk, and when it finished processing file records, it said it had processed "44 reparse records". What exactly are they?
17
votes
4answers
94k views

Why can't I delete files that “do not exist”, but appear in my download directory?

I've downloaded three videos. I moved them to a different folder where I put all my videos, however a copy of the files still show up in my download directory. I tried (in Explorer and cmd.exe) to ...
17
votes
1answer
3k views

Why can't normal users on Windows create symbolic links?

Beginning with Windows Vista NTFS gained the ability to represent symbolic links to files (as opposed to directory junctions). Also the mklink utility appeared. However, non-administrative users can't ...
16
votes
4answers
13k views

Is it safe (or advisable) to compress Windows Installer folder via NTFS compression?

The title pretty much explains the question. Aside from the obvious (speed), is it generally safe or advisable to compress via NTFS compression the C:\Windows\Installer folder given that it's within ...
16
votes
3answers
70k views

Convert NTFS volume to exFAT (without losing contents)

I have a 500GB external hard disk which I use mostly for storing movies/music and some backup. Since I have some rather large files I use NTFS on it, but don't need the security/compression/encryption ...
16
votes
1answer
397 views

Limit of 21842 files in a directory?

Copying files using Fedora 16 from EXT2 to a NTFS 2TB drive. Discovered that when recursively copying directories of many files, copying stops at file 21842 in each directory... then cp -r moves on ...
15
votes
3answers
3k views

Is it possible to determine when a NTFS partition was created?

We have a client where it would be very useful to determine WHEN a drive was a initialized or an NTFS partition created. Is there a timestamp value somewhere? If anyone could shed any advice it ...
15
votes
3answers
58k views

How to prevent users from deleting a folder, while still giving them modify permissions to its contents?

I am trying to prevent users from accidentally deleting certain folders (such as their personal scan destination folder - stored in their home drive), while still giving them read+write permissions to ...
15
votes
4answers
5k views

Scenario - NTFS Symbolic Link or Junction?

Differences ┌───────────────┬──────────┬──────────┬──────┬───────────┬─────┐ │ │ Absolute │ Relative │ File │ Directory │ UNC │ ├───────────────┼──────────┼──────────┼──────┼───────────...
14
votes
4answers
29k views

Is there a limit to the number of files I can place in a given folder?

How many files can a folder contain? I have 30k folders inside 1 folder. Each of the folders has 1 image file. Is there a limit on the number of files a folder can store? I am using Windows Server ...
14
votes
4answers
60k views

Reformat SD card to NTFS

I want to reformat a 16 GB SD card to NTFS so that I can use it to transfer large files (larger than 4 GB) from one computer to another easily, but my computer will only allow FAT variations....
14
votes
1answer
807 views

Are files that use NTFS compression decompressed onto disk or into memory?

How does NTFS decompression work in Windows? According to Microsoft, NTFS decompression is done by expanding the file, then using it. That sounds right, but my question is how this process occurs ...
14
votes
2answers
15k views

How to bind old user's SID to new user to remain NTFS file ownership and permissions after freshly reinstall of Windows?

Each time we reinstalled Windows, it will create a new SID for user even the username is as same as before. // example (not real SID format, just show the problem) user SID -------------------- ...
13
votes
8answers
13k views

Which file system to use for a large (1 TB) external hard drive?

I've got a 1 TB hard disk drive which is currently formatted as NTFS. I've recently learned about exFAT. I'm connecting this drive via USB. Which filesystem should I use for this large hard disk drive ...
13
votes
3answers
45k views

Why am I asked “Are you sure you want to copy this file without its properties?” when copying files from NTFS to a FAT drive?

I have an image file on my NTFS filesystem and get the following message when I try to copy to my FAT32 drive: Are you sure you want to copy this file without its properties? I can't find any ...
13
votes
3answers
10k views

Are there any negative effects of disabling the Last Access timestamp?

In Windows, you can disable the last accessed timestamp by setting NtfsDisableLastAccessUpdate to 1, for instance by executing this from the command line (the computer must be restarted before it ...
13
votes
2answers
73k views

How to fix a damaged/corrupted NTFS filesystem/partition without losing the data on it?

I was going to install Fedora 15 along side my Windows 7 Starter on my Acer Apire One D255E and at some point during the resizing of the NTFS partition (the one with Windows on it) the setup failed. ...
13
votes
2answers
5k views

Why are files created by Puttygen hidden in Windows 7 Explorer?

In Windows 7 Home Premium, after saving a private key in PuTTY Key Generator (aka. Puttygen) at the C drive root it is not visible in Explorer. How to reproduce: Start Puttygen. Generate a key. ...
13
votes
5answers
7k views

Using NTFS hard links to combine full/differential backups

Short: Is it possible to (robo)copy a directory tree using hard links instead of physical copy? I want to make a daily backup of my data files, every day in it's own directory. Now most files don't ...
12
votes
3answers
8k views

Kernel NTFS driver vs NTFS-3G

A more comprehensive phrased question since I lost access to the other one. I would ask that the other one be deleted, not this one, as it should not have been migrated in the first place. There are ...