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Questions tagged [filesystem]

The system used to format and organize files on a disk. This includes directory structure, permissions management, metadata, and more. The current default file system for macOS is APFS (High Sierra and higher) and HFS+ (Sierra or lower).

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After deleting files to make space for windows partition, 'System' swells in size

I deleted a bunch of files so that I could free up 64GB of space for a windows bootcamp partition. When I started, the 'System' filesize was around 16GB, and now it's doubled to 36GB. Is there any ...
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Sorting file names using a custom rule

I saw that in iTunes if you select an item in your playlist and go to Edit > Info > Sorting, in the "Sort As" field you can enter the actual name in which you want the item to be sorted as when you ...
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Why does Finder's scp folder disappear when ssh is invoked?

sshfs 2.5 and fuse 3.8.3 were installed on OS X 10.11.6 ElCapitan Why does: sshfs users@fqdn.com:/mnt/CRUZERFIT16/Directory /Users/user/Documents/scpbox force the folder scpbox to disappear? I ...
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How can I customize iCloud's “Optimize Mac Storage” function?

iCloud has the ability to offload files from my laptop, which is useful when I am running low on space, as shown below In my case, I just installed Syncfusion's demos, and my files appear to be ...
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31 views

Issues installing Fuse for macOS

I am trying to install Fuse for macOS on my iMac running macOS High Sierra 10.13.6. I am expecting to see Fuse shown under System Preferences → Security & Privacy where I have to approve the app ...
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128 views

Removed /usr/lib/libstdc++.6.0.9.dylib - how to retrieve the original?

I'm on macOS Mojave and accidentally removed the following library: /usr/lib/libstdc++.6.0.9.dylib Upon booting up the system, I am greeted by the login screen followed by a black screen. I have ...
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68 views

My External Hard Drive's format changed to FAT16 without any reason

I have an ADATA HD710 1TB external hard drive which I use mostly in my Mac Mini 2011 and I have created two separate partitions for my drive. One of the partitions has APFS (Apple File System) format ...
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Cannot recover mail.app subdirectories in ~/Library/Mail/V4

I had two issues with Mail.app The indexing was not properly working. When I removed attachements in old received messages, the file size would be reduced by half instead of by 99+%. I concluded ...
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How can I extract my MacBook Pro Notes files so that the data becomes “normal” again after my computer's file system crashed?

My MacBook Pro from ca. 2011-2013 or something kind of "crashed" - the computer's file system was ruined - when I did a manual forced shutdown because the Notes app was not responding. When I turned ...
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40 views

Desktop files showing in command line shell but not in Finder

I'm using iCloud drive. I have some HEIC files on my Desktop that I converted to jpg using a simple automator script. After the conversion, the jpgs are nowhere to be found in Finder or on the Desktop....
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24 views

MacOS File Permissions Reset After Writing

I have two user accounts on my MacOS 10.12, both should be able to read and write a KeePass file saved in /Users/Shared/. I've created a user group for this called me that contains both users. In the ...
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120 views

Creating mountable snapshot view in macOS

I'm used to backup my user's home using rsync. However, I now have data (eg, running database) that shouldn't be backed up while being changed, and I'd like to keep the applications changing them ...
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Cannot remove or update fuse for mac osx

I'm trying to upgrade my fuse but clicking update or remove button just does nothing. I tried directly installing 3.8.2 package and all says is "success" install but the fuse pane still shows that I ...
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1answer
266 views

Finder shows different file size compared to terminal

I have a folder called 'objects' in my mac. When I check the contents of it in the terminal it's showing like this. Clearly object folder shows 4.1K However when I see it in the finder, It shows, ...
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Command line utility for browsing Apple's Photos.app database like a filesystem

Is there a command line utility to allow browsing and editing photos in the Apple's Photos.app database like you would browse a file system? The Photos app is really terrible when trying to perform ...
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28 views

Modify permissions of files created via SMB in a specific directory

I have a multifunction printer that has a SMB-capable scanning unit. I want to have the printer send scans to an SMB share on my iMac running macOS High Sierra (10.13). I do not want to store my main ...
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Encrypted disk in Windows 10, unreadable by macOS

I encrypted by external HDD with exFAT format using VeraCrypt on a windows machine. When I plug in the encrypted disk into MacBook (running macOS Mojave), I get the error "the disk you inserted was ...
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75 views

Can AppleScript search deeply for the largest file contained below a folder?

I need to make an AppleScript that would find the biggest file in selected directory (even if its inside another folder) and show full path on screen. This is what I have so far, but it doesn't work:...
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1answer
36 views

Determining unknown filesystems from OSX

Years ago I set up a Linux-based multimedia PC for my parents to store all their music and movies on, as that's the OS I use on my home computers and so if/when things went pear-shaped I'd be able to ...
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64 views

How do I know when my HD is under maintenance?

I work with several large movie files, almost all with 150+ GB. And sometimes I experience a harsh slow down on my iMac's speed which is accompanied by a writing/reading HD noise. So I'm pretty sure ...
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190 views

How do I fix hard disk “Error: -69845: File system verify or repair failed”

How can I resolve the Error: -69845: File system verify or repair failed error I'm getting when trying to verify my hard drive? So far these are the steps I've taken: In Terminal I ran: diskutil ...
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How to have two owners access the same files

I'm trying to give full access to two different users in the same directory. When I run Laravel via Apache, it uses the _www user. When I run Laravel via PHPUnit (on the command line), it uses my own ...
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354 views

Can't write to my FAT32 USB drive on Mac

I can't write to my USB on MacBook Pro. The USB was working well on both Windows and Mac until it stopped working on Mac suddenly (it's working well on Windows though). I reformatted it as FAT32 and ...
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TimeCapsule crashes repeatedly when deleting a “grayed out” file in a folder

I have a file on my TimeCapsule that apparently never finished being moved or copied to TimeCapsule. It is constantly grayed out. I can move it, but I can't rename it. I can move it, but I can't ...
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74 views

How do you save files locally to a Mac while having iCloud backup enabled?

I'm attempting to clean up a iCloud account a little bit; it's on the free tier and it's full of photos. I assumed I could copy-paste the photos on the Macbook from the synced iCloud directory to a ...
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Change a booting volume's file system to case-sensitive (from case-insensitive) without re-formatting, backing up and restoring

I am currently booting my macOS 10.13 on a case-insensitive APFS-formatted SSD. Is it possible to change this to case-sensitive without re-formatting the SSD (hence avoid the hassle of backing up the ...
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1answer
23 views

Read a Linux Disk in MacOS?

I have a two-disk NAS in RAID 1 that's not cooperating. I tried taking one of the disks out and plugging it into my iMac via a USB enclosure to copy the files off of it, but MacOS can't read the disk. ...
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18 views

Export files in alphabetical sequence from Mac Photos app

I have a Sony TV which has a Media player for displaying photos and videos. I want to play a slideshow of my pics from the Photos App on my Mac by exporting them on a USB stick which I can plug into ...
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1answer
222 views

How does macOS implement symbolic link in Mojave on FAT32 filesystems?

I remember in the past, not all types of aliases (as in the macOS feature) can be created on all filesystems. This is because symbolic link (as in the type of file) is a special Unix file type, ...
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25 views

How To Stop macOS From Generating File Icons On The Fly Based On The Filetype

This is a really petty complaint, but in macOS, a file will assume the icon set for it by the default application set to open that file, but on my Mac certain file types, the icon seems to be ...
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24 views

how to search files modified between a specific time in a date

In mac os, how can I search the files modified or used within a specified timespan on a date? For example i want to get the files used between 10am to 4pm on 10/30/2018. Can this be done either via ...
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1answer
25 views

Edit text file in a folder owned by a different user on macOS? I have system admin password

How can I access and edit a text file found in a folder owned by another user? I am in the original user account setup for this macOS Mojave installation, and have the system admin password. So I ...
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MacOS Mojave hangs creating file

Since I've updated my MacBook Pro to macOS Mojave (18A391), all the apps that feature file creation (Example: Xcode, VSCode, TextEdit, etc) are hanging for at least 20 seconds on the spinning wait ...
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23 views

Is it possible to roll back to the last saved version of a file in mojave?

I am not sure if I read that APFS functionality correctly but I have read that Mojave stores a kind of file time machine and that I could browse previous versions of files on the filesystem. I was ...
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26 views

Is it possible to make a folder look and behave like a file?

I'm developing a desktop application which saves its projects to disk. Projects contain multiple files, like json and jpg etc. Current solution: zipped file I'm "zipping" them all together into a ...
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471 views

Location of the root's home directory in macOS

All Unix-like operating systems I've seen use /root as the home directory for the root account. What's the reason it was moved to /var/root in macOS? Can I change it to the usual /root? I need to run ...
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Spotlight is disabled but “._file_name” still get created on external drives that I plug in [duplicate]

I want to prevent my MAC from creating ._file_name files on external memory drives that I plug into it. I think I've turned off Spotlight completely. However, such files keep getting created. How to ...
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371 views

Terminal command to remove custom icon from file (HFS+)

Context In Mac OS X / macOS you can select a file in the Finder, click Informations then click the icon, and paste any image/icon that is in the clipboard. Now this file has a custom icon made of ...
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400 views

Can't Install Mojave because of file system error: Object map is invalid

I wanted to upgrade macOS High Sierra to Mojave but installation failed with this error: File system verify or repair failed. Using Recovery Mode I tried First Aid from Disk Utility and it failed ...
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1answer
357 views

Access to ~/Library/Containers/com.apple.mail/Data/ denied

Since installing Mojave, I can no longer access ~/Library/Containers/com.apple.mail/Data/: pse@Mithos:~$ ll ~/Library/Containers/com.apple.mail/Data/ ls: DataVaults: Operation not permitted I've ...
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2k views

How can I get an NTFS partition to mount in macOS Mojave?

I have a external HDD with four different partitions on it. 3 out of 4 of them work flawlessly. Two partitions are running the macOS Extended filesystem, one is running good old fat32, with the last ...
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22 views

Recovering a deleted file on MacOS

There is an old Unix trick for attempting to recover a deleted file where you run $ sudo grep -C100 string-known-to-be-in-file /dev/sda1 which takes a very long time, but can at least recover a ...
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23 views

Mount two disks/directories into a single point

I want to mount two disks or directories into a single mount point. I saw some article online which mentioned bindfs, I had a look at it but I don't understand how it can help. Another article shows ...
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1answer
109 views

How to manage permissions of files owned by user “_unknown” in Mac OS 10.13.4?

I've got permissions problems with files on my MacOS 10.13.4 desktop. When I try to correct the problems by hand, I see a curious issue: Matt$ sudo chown Matt:Engineers TestFile chown: TestFile: ...
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134 views

How do I get the path to a DMG (disk image) file given the mounted volume path?

I tried hdiutil info -plist, but if I shift the DMG file elsewhere after mounting it, it doesn't update the DMG path. If I right click and select 'Get info' on the volume, I'm able to view the correct ...
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43 views

How to get the Disk Image property using terminal?

Let's say I have the volume path. Normally I can right-click and 'Get info' to get its Disk image. I want to replicate the same on terminal (basically need to code it in objective C) mdls doesn't seem ...
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3answers
484 views

Mac Pro 5.1 Windows 10 boot problems

I'm trying to run Win 10 on a separated drive attached to sata optical drive bay. I ran into some issues about GPT partition over instalation processes which I could solve it by terminal commands. It ...
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1answer
27 views

Why is macOS forcibly renaming my USB drive?

I have a USB Drive named "Cuthbert", and various apps use paths starting with /Volumes/Cuthbert when it is plugged in. However, my laptop is putting it at /Volumes/Cuthbert 1, and won't let me rename ...
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111 views

Mac File System Tagging questions regarding external USB drive, SMB shares and indexing

(1) I googled mac tagging. I know the tagging was stored in HFS+ file system's extended attribute. But when I create tags in SMB shares (which are ext4 and ntfs on the network), I find out the tags ...
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1answer
160 views

Which filesystems support symbolic links?

I'm copying a big archive of files from a Linux host to an external USB hard drive, that will then plug into a macOS host. The copy should preserve the archive's many symbolic links (ln -s). What ...