Questions tagged [filesystems]

A file system is the specification of how files in a computer should be stored, named and organized. This tag should be used for generic file system questions. For specific file system questions (FAT, NTFS, ext4, ...) use the appropriate tag instead.

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Setup Multi user development environment on cloud [closed]

For the context: We're planning to migrate to a cloud VM(s) based development environment for our engineering team. The idea is to develop and build everything on these remote VMs and nothing needs to ...
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Reinstalling Windows 10 but keep steam games and files on F drive

I originally had a dell laptop with an SSD running windows 10 pro. I build a desktop gaming computer and transferred the SSD, so I wouldn't have to deal with transferring files and everything else. It ...
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Recovering virtual machine from increasing disk size

I lacked free space on my VirtualBox Ubuntu 20.04 desktop virtual machine, so I desided to just go to VirtualBox client settings and resize VDI from 32 to 50 GB. After that the machine doensn't boot: ...
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Folders copied from Windows XP are undeletable

Background A while ago, I backed up someone's user folder on Windows XP to my hard drive (NTFS). I later deleted this folder off my hard drive, but five folders stayed behind: My Documents\Calenders ...
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Is it safe to interrupt when “fallocate --dig-holes” is running?

I use fallocate --dig-holes on very large disk images to make it sparse in-place. I'm worried that this operation may not be atomic. My questions are, Is my data guaranteed to be safe (holes are ...
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Is there any way to fix incorrect file size?

I have two files that both the Windows operating system and Linux report as >700GB, when in fact my disk size is only 500GB, making it impossible for me to move it somewhere else. They were backed ...
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Give different path addresses to same storage location

Is it possible to give different addresses to same storage location in Windows. For example address "C:\Dir1" and "D:\Dir2" access the same storage location, let say I have an ...
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Does formatting with FAT on Windows 10 send TRIM to the SSD?

Sources seem hard to come by regarding Windows' behavior regarding TRIM and formatting. This now removed blog entry on msdn.com states that since Windows 7, TRIM is sent to the SSD when formatting to ...
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How to implement an ephemeral file cache on a local file-system with off-the-shelf tools? [migrated]

Background I'm looking to implement a pass-through cache for a file-serving application. The users would make requests for files to the cache, if found, read from cache, otherwise the cache will fetch ...
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Give access to laptop's internal HDD to other Windows users

I replaced my laptops HDD with SSD, I have tons of data on that HDD and I use that drive as external backup, I tried to access it from Windows 7 PC and I had no problems, here is picture how ...
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Same file system but different hardware abstraction confusion

I still don't fully grasp how file systems work deep down. For example, I have both a hard disk drive and a Flash USB stick connected to my Linux or Windows computer. I'm presented with options of ...
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Automatically remap folder's contents to different drive when updated?

I have a program that outputs data to a folder in my C drive (C:\Users\games\AppData\Roaming\Yernemm\OWET2\output). This program does not have a way to set the output path for it's data. Instead, I ...
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What is the difference of overlayfs and bind mount?

Here is my understanding: Bind mount only keeps files from upper fs accessible. No files from lower fs under target path would be accessible. Overlayfs also keeps the files of lower fs that does not ...
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How do I find out what is the default allocation size for a drive

So, When formatting in windows and pressing "restore device defaults" it uses the default file system, but that's not what I'm asking about, it also defaults to "default allocation size&...
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alpine diskless install mount ext4 with specified user and group permission

How can I mount an ext4 formatted disk on startup with a specific user and group on an diskless Alpine installation? When I mount the disk and change the user and group with chown and chmod it is not ...
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fix corrupt file with same inode than an other (linux, ntfs)

While copying thousands of images on a new disk with a pi (raspbian), rsync stopped with an error, impossible to move temp file to correct file name. The real file name actually exists but has the ...
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Why is the root user home dir isn't under /home

I know one of the reasons of /root not being under /home is because /home might be a different partition and we want to be able to log into the user root always. What are some of the other reasons for ...
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Trying to understand how the deletion of hard links relate to the freeing up of values in the inode table?

When a hard link is deleted, the link is removed but the contents of the file itself continue to exist (that is, its space is not deallocated) until all links to the file are deleted. My understanding ...
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How to automatically export MS Teams links for all files within folder and subfolders

I want to automatically obtain a list of MS Teams/Sharepoint links to all the files within a folder on MS Teams. The folder also has subfolders. I'd rather not manually go through every file, click on ...
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Two computers write same USB SSD

I am trying to understand if it is possible to have a single SSD with a single filesystem that can be read and written by multiple computers at the same time via USB 3.0. I've been looking for ...
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37 views

Why empty drive size differs from available space

I've just formatted a 500G disk and mounted it to /data folder. ~ :) df -h Filesystem Size Used Avail Use% Mounted on udev 3.9G 0 3.9G 0% /dev tmpfs 795M 748K 795M ...
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Readonly / filesystem immediately after install

I'm using pxeboot and kickstart to automate the installation of CentOS 8. For some reason the resulting systems have a readonly / filesystem after install and its driving me nuts. What might be ...
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35 views

Add shortcut to nowhere

How to add a shortcut in Windows that leads to nowhere as the target (without producing an error)? When the shortcut is opened it should do/execute nothing. The important thing is that the shortcut ...
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What would cause a file to disappear in Windows 10?

When I copy a specific file from a share to a local computer it disappeared almost immediately. I have hidden files turned off, so that isn’t it; I don’t see any threat detected in the virus ...
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30 views

Why do subsequent copy operations for the same file and destination get slower (windows)

I am writing a little test suite to compare the speed of different file copy techniques. I have a number of different methods that I want to test and I run each test 5 times with a 500ms break between ...
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List directory contents on Windows in hex or other form that shows the non-ASCII chars in detail

I need to determine the unicode normalization used for specific on-disk file names in Windows 10. Specifically, I need to see if a file name uses NFC or NFD form for non-ASCII latin characters such as ...
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How to mount tmpfs on a directory so that all changes to the existing (and new) files and folders in the directory is persisted in RAM instead?

I want to mount tmpfs on a directory in an embedded system that advises against too many writes to files, but that is exactly what I am being required to do. So I was hoping I could mount tmpfs or ...
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Is there a filesystem that works on WIndows and natively on Mac with POSIX permissions?

I want to store my SSH keys on a USB drive and have it work on Mac and Windows. Which means I need a file system that has support for POSIX permissions so that I can use the SSH keys without copying ...
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Is there a tool to query FAT filesystem details? [closed]

What filesystem tool could I use, to display details of a FAT volume? I have no lost data, I need no information forensics level details, and I do not require to alter anything on the FAT volume. I ...
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How to delete all duplicates of a file linked by CoW on BTRFS

The glory of Copy-on-Write (CoW) allows us to copy a file as many times as we like, without duplicating the used space. I have used this functionality extensively (as well as manual deduplication of ...
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File last modified time on Windows not updated

I have an app, which Reads last modified timestamp of some files. Executes svn update process, wait until it finishes. Checks which file have been modified by comparing their last modified timestamps ...
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Why the owner itself can't list the directory?

With 777 permissions on the directory: sudo ls -al /home/debian/mydoc/source/document total 144 drwxrwxrwx 2 debian debian 4096 Mar 16 20:21 . Execute ls by its owner? debian@mydebian:~$ ls -al /...
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Tuning linux filesystem caching for aggressive writing to block storage

I have an Amazon EC2 instance of type c4.8xlarge that I'm using as a target for ongoing rsync processes that are storing my database data files and transaction logs for disaster recovery purposes. ...
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Change ROW/CN filesystem/partitioning to FUSE partitioning/filesystem

I ahve old A3000-H tablet. And I flashed custom ROM - KitKat. But it has CN/ROW partitioning - two "internal storages" - internal storage - with mount point / - and internal sdcard - with ...
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Vim-based file explorer for windows

I have been using qutebrowser for a while. And I really like the way it allows me to use the Vim-type keybindings for rapid navigation. So, is there any software or specifically a file explorer for ...
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How exactly do btrfs/ZFS (and related filesystems) prevent bit rot?

It seems that, since btrfs development began, various communities have touted both it and ZFS as inherently more advanced filesystems for preventing corruption, bit rot, etc. What features of btrfs or ...
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What is this .txt file in All Users of my PC?

I have come across an entry on my Lenovo ThinkPad laptop in Computer>System(C)>Users>All Users that I need an explanation for, as in what Log file was being created on 08/05/18, Removing ASPI,...
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32 views

My backup HDD comes formatted with exFAT; should I reformat it?

I've gotten an HDD for backup purposes. I intend to backup various kinds of files from my desktop computer - nothing special to make assumptions about. Now, the HDD has been preformatted with an exFAT ...
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File named SAT cannot be accessed nor deleted

There is one file on my OSX system after Catalina update (now Big Sur), that can never be deleted nor moved. The file is not even readable and the access flags are all "?" (see screenshot ...
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How to prevent users from circumventing shared file restrictions?

I was employed by a school to setup a shared folder between classes and therefore everyone in that class can access the shared files by the teacher but cannot write to them. However, upon testing, a ...
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114 views

Btrfs write speed very slow. In Linux how do I copy files using page cache?

I have 2 filesystems consisting of the same 15Tib size with both of them using 4 nvme ssd of the same model using btrfs based raid0 with all of the them plugged to a pci port. Both filesystem are ...
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What happens exactly when formatting a drive within Windows and choosing the Restore Device Defaults button?

When choosing to format a drive from within Windows/File Explorer, one of the options presented is called "Restore Device Defaults" - however, it's not immediately obvious as to what the ...
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I rm -rf'ed an iSCSI Target [duplicate]

Ok, so yes stupid me, apparently I logged in to my Synology back in January and ran an rm -rf * in my @iSCSI node that housed my VMWare DataStore. Then I rebooted both the ESX and Synology about 3 ...
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56 views

Windows: How to create a tab-separated list of information about files in a directory

As a Linux user I have no idea to solve the following problem on Windows (using cmd.exe): I want to list all files in a given directory recursively with the following information seperated by tabs ...
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51 views

How is it possible for empty files to take zero bytes in Linux?

I've also asked a sibling question for Windows. In Linux (I just tested): The size of an empty folder is given as 4 KB (regardless of its name) The size of an empty file is given as 0 bytes However,...
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63 views

How is it possible for empty files and folders to take zero bytes in Windows?

I've also asked a sibling question for Linux. In Windows (I just tested): The size of an empty folder is given as 0 bytes The size of an empty file is given as 0 bytes However, files and folders ...
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23 views

Does windows have no exec filesystems?

So in linux, I know there are filesystems that are no exec file systems. Filesystems that you cannot excecute files on. Does windows have these? I assume they dont because if you install something in ...
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Compile a list of files accessed on an NFS mount

The NFS mount in question is basically a set of build tools and libraries. I would like to copy them over to the local file system for faster builds. Copying the whole NFS share is a challenge: Is ...
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Is there a way to create a multipart archive in multiple sessions?

I have a remote machine, where the space is very limited (~15GB free) I have an NFS share mounted on this VM, the size of the share is ~600GBs. The NFS share has lightning-fast access from this ...
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Can a media file redirect to a website when clicked?

Can a file open a website when clicked on it? I want the file (eg- any media file) not to open directly, but to redirect to a personal website first for further viewing.I have considered converting ...

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