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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how do operating systems differentiate files? [closed]

I'm new in programming and computers. So here is my question: When I double click for example .exe or .jpg file how does operating system know how to behave with that file? I mean, is the file ...
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1answer
50 views

Find duplicate media files and auto organize, on Linux

Is there an application similar to MediaMoney (on Windows), but on Linux (Debian or Ubuntu) that given when a disk-drive or a root directory, can search across it thoroughly, identifying duplicate ...
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dd'ed the partition my debian was running on, now I get 'unknown file system'. how to make the (surviving) files accessible again?

details: Wanted to create linux boot stick with dd command (1,1 GB iso) Copy paste mistake led to dd'ing this iso to the partition running my debian jessie (sda1) After reboot I get 'unknown file ...
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1answer
35 views

What does the second field in ls -l mean on OS X? What does “number of links” mean?

I'm on an OS X operating System, and I don't understand what the second field in the ls -l command is supposed to mean. Say I am inside an empty directory, and I create a single directory inside of ...
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0answers
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How to confirm USB drive partitioned correctly?

A few years ago, I partitioned an external USB drive and installed an EXT3 filesystem on it. The filesystem has 4 terabytes of space. Recently, I realized the drive itself is only a 3 terabyte drive. ...
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3answers
136 views

Software raid and filesystem

What is the relation between software RAID and a file system? Are they related? Should I use a file system when I am using software RAID or I can access raided disk for RAW read and write?
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1answer
67 views

Elastix kernel panic

I'm kind of newbie with all the linux stuff. I have a local server with Elastix 2.5 installed. Everything was running smooth until a few days ago. When I started the server the System didn't boot ...
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0answers
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Can a SD card with bad eraseblocks be salvaged?

I have an SD card on my Raspberry Pi (formated with ext4) that always shows errors at mount time, even after a fresh fsck run. I suspect it is a cheap card with no wear leveling, and some blocks got ...
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1answer
38 views

Delete files with broken file name

I was using NodeJSPortable on a PortableApps flash drive that was plugged into a computer I didn't have administrative access to. I tried running npm install socket.io not only did it not work but it ...
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3answers
203 views

How “big” can a tree be?

When you have a folder in a folder in a folder, you have a tree of 3 (three) "levels". How many levels can a tree have in a Computer? Id Est: How many steps can it take to get to a folder (with the ...
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0answers
49 views

Access Mask filter in Event log XML not working

I'm trying to monitor folder creations and deletions using a filesystem auditing and a custom XML filter in the Windows Event Viewer. The XML is as below: <QueryList> <Query Id="0" ...
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1answer
62 views

Trying to mount encrypted file system failing

I had created an encrypted file system using the following commands: # dd if=/dev/zero of=/opt/vol # losetup -e aes /dev/loop0 /opt/vol Password: # mkfs.ext4 /dev/loop0 The above device was mounted ...
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1answer
54 views

No /etc/fstab folder to amend swap issue

I was given an answer earlier on how to correct a swap file issue. Now however, I discover that I have no /etc/fstab folder in my file system to alter. I have a /etc/fstab.d folder but it is empty. I ...
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0answers
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Windows 7 auto-play not opening device files

I want to see my android device internal files and sd card files. So when I connect my device to my machine; It shows me autoplay pop up. But when I select open device to view files; popup just ...
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0answers
21 views

Different sized data blocks in a single file system

In Unix, each file uses one inode and each inode, in turn, may use a variety of number of blocks to store data. The size of the blocks in a file system may be configured or chosen but it must be ...
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1answer
26 views

Open the folder on the cursor with another application NerdTree

I'm using NERDTree, it would be awesome if, when I'm with the cursor over a folder, I had a way to call my file manager, say thunar, whit a mapping to open that folder. Like Sublime does.
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0answers
29 views

How to generate an ext4 filesystem for an embedded system?

I'm looking through the ubuntu man pages on genext2fs and am trying to understand how to properly choose some of these parameters. How do the block size, number of inodes and number of ext2 blocks ...
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0answers
43 views

Limit the size of the disk driver cache on Linux

I am running some experiments for comparing storage systems under load in Linux. To this end I want to force the file system to access the disk itself without caching too much data on RAM. How can I ...
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2answers
119 views

How to mount Linux rev 1.0 ext4 filesystem data file?

$ file data Linux rev 1.0 ext4 filesystem data, UUID=9f923f9d-2cbd-4a49-8b5c-6a3cece42509 (extents) (64bit) (large files) (huge files) $ mount -t ext4 data /mnt/ mount: wrong fs type, bad ...
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0answers
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How to make mounted file system writable using sshfs

I have an exFat-formatted external hard drive mounted on a Raspberry Pi. I use OSX fuse to mount the Pi on my local file system on my Mac using this: sshfs user@IP:/pi/directory/to/mount ...
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0answers
32 views

How to find out what process created a certain file after the deed has been done?

I know this question exists. What are my options to get a hold of an application (probably malfunction in code) that creates a "bad file" like in this screenshot: It's always exactly this file, ...
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1answer
20 views

can't recover my files in my thumbdrive

I got a thumbdrive brand Kingston model DT101 G2 with capacity 32 GB. The problem is when I copy files from my computer to this thumbdrive, it seems I can't reopen it (files) at another computer when ...
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1answer
20 views

how can I remove write access from a file?

I have a program, (logger lite -vernier) which has a configuration file, that I use to set up scientific experiments. the configFile when I run logger lite, the software changes the config file, and ...
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3answers
50 views

Bash command for finding file extensions with largest size

I am trying to find file extensions with sorted by size in a directory and sub directory. Something like this: 76K .pek ./Adobe Premiere Pro Preview ...
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0answers
18 views

How to add a disk

I would like to start to use a disk: /dev/sda (see bellow). What do I need to do before I could copy files on it? (centos 6) # fdisk -l Disk /dev/sda: 1030.8 GB, 1030792151040 bytes 255 heads, 63 ...
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1answer
853 views

100% disk usage on windows 10

I've a windows 10 copy running in my core i5 second gen laptop. Now there is this issue where the hard disk usage goes to 100% and the system doesn't respond for a few seconds to even few minutes. ...
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0answers
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How to install Sysfs backlight software on my Toshiba Tecra R850?

I'm running Ubuntu 14.04 on VirtualBox, which seems to have emulated graphics. I can adjust my brightness and have graphics drivers installed, but Calise doesn't recognise either. It wants sysfs ...
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0answers
82 views

Does any linux disk format support transparent folder compression? (Like NTFS)

I feel like I could use transparent, seamless folder compression. One way to achieve this, I think, is to compress normally, and mount an archive with Nautillus. AFAIK. you can run programs from the ...
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3answers
283 views

How can I find out the /sys/class or /sys/devices entry for a mounted filesystem?

What I have: I know the place in the filesystem where a microSD card is mounted, e.g. /storage/sdcard1 What I need: To find out which device folder it corresponds to, e.g. /sys/class/mmc_host/mmc0 ...
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0answers
117 views

Repairing HDD cylinder/head mismatches of corrupt HFS+ file system

After having to do a hard reset on my laptop, my external USB drive's file system got corrupt. Disk Utility sees the drive and its partitions but they appear full (they aren't) and I can't mount them. ...
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0answers
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How to make a custom collection or grouping folders in windows?

I use windows 8.1. I have 10 folders in my root folder of a drive, namely folder1, folder2, folder3, folder4, folder5, folder6, folder7, folder8, folder9 and folder10. I want to group these folders ...
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2answers
85 views

Unable to delete folders from Mac archive on Windows

I extracted a zip file, but found that I cannot delete the extracted folders afterwards. Including the actual file folder and the __MACOSX folder. If I shift-delete these files, nothing happens. If I ...
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1answer
49 views

C:\ Directory size mismatch cmd vs gui [duplicate]

I am on Windows 10 and have a ~640GB (base 10) Hard drive with 2 main partitions on it C:\ and D:\ and also a recovery and system partition as can be seen here When I use cmd to determine the size ...
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0answers
82 views

Why does ZFS slow down making large files after 2.4 gig?

Zfs on linux, I'm making a large tar file, I'm watching it add to the file, and it goes very quickly, until it hits 2.4gig in size, then it just crawls, for hours. The same file on ext4 has no ...
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4answers
137 views

How to create a hyperlink file?

I know this question sounds too generic but I am unable to find an answer for it. How can I create a link (soft/hard) file which when opened, redirect me to a website with http protocol? One ...
1
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1answer
57 views

When I copy the contents of one drive, the copy takes up less space. Why? [closed]

I am trying to copy the contents of one hard drive to another hard drive. But once the copy is completed, the copy takes up less space than the original files. Hence not all files are being copied. ...
1
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1answer
100 views

Can't copy file on the same machine - Error 0x8007045D: The request could not be performed because of an I/O device error

I have Windows 2008 Server. In it I have 2 hard drives. One I use to store backup, I have it in the tray, which I turn on before backup and turn off after. I backup only virtual machines, my host is ...
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2answers
95 views

Windows 7 (64-bit): “C:\Program Files” versus “C:\Program Files (x86)” [duplicate]

I am running Windows 7 Home Premium (64-bit). I have read that the difference between "C:\Program Files" versus "C:\Program Files (x86)" is that one is for 32-bit executables whereas the other is for ...
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0answers
106 views

Why does FAT32 only use 28-bits for addressing?

I was reading Why is FAT32 limited to 8 TiB? The answer to that question was that 4 bits were reserved "for future use". What advantage is there in reserving these bits? Surely register size, ...
2
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1answer
61 views

Windows - How can I determine what is locking this network file

(a similar question has been asked by me before - this question relates to the same application, but a different - but probably related - problem) I have an application that regularly writes records ...
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1answer
3k views

Why is FAT32 limited to just under 2^28 clusters?

With FAT16 the maximum partition size is 2GB when your maximum cluster size is 32K. This is calculated by multiplying the number of addressable units by the cluster size. (216 Allocation units) * ...
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32 views

Ghost files on Windows 7?

When I dir my desktop I get: 04-10-2015 21:36 <DIR> . 04-10-2015 21:36 <DIR> .. 19-03-2015 09:45 1.254 Adobe After Effects CC 2014.lnk 19-04-2015 ...
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0answers
78 views

Since Python 3.5 upgrade my .py files won't work right

Before when i had Python 3.4 if i right clicked on a .py file it would give me the option to open it with IDLE or just open it which would do it through the terminal/cmd or w.e. I set it up so that ...
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1answer
15 views

Merging multiple file copy backups

I have a series of backups (manually made) that contain duplicate information, is there any program/script/command to iterate through the directory structure identify duplicate files via MD5 hashes ...
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2answers
2k views

How much can we rely on filesystem permissions for security?

My question is about filesystem permissions (specifically the Unix style permissions) and how they relate to security. Say I have access to a computer with a guest user account and a user named Bob. ...
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0answers
31 views

Changing filesystem on dualboot [duplicate]

I'm trying to get my new laptop working with dualboot. I have booted from linux live USB stick and created partitions on the disk -- mainly for linux (sda3), creating ext4 FS there, and shared ...
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0answers
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Recover truncated/overwritten (with zero bytes) file on ext4

I managed to truncate a file on my ext4 file system. (Ubuntu 12.04/64). I realised the problem right away and unmounted the file system. No bytes were written to the new file so it's now 0 bytes ...
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0answers
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GZIP file system code for Linux?

GZIP allows one to use file system codes. See page 7 of RFC 1952. What is (are?) the GZIP file system code(s) to use for Linux?
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1answer
52 views

Windows doesn't recognise first partition on SD Card

I have a 32 GB SD Card that I bak my files up to. Recently I've dual booted my Windows 7 laptop with Ubuntu, and I wanted to use timeshift to back up my Ubuntu system. Timeshift requires an ext based ...
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6answers
3k views

What USB drive filesystem works out of the box on Windows, Linux, and OS X? [duplicate]

What USB drive filesystem works out of the box on Windows, Linux, and OS X so that, when I give a 64GB USB drive to my dad, I don't have to tell him to first type in sudo apt-get install exfat-fuse ...