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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How to use a 2 TB external hard drive containing existing data as TimeMachine backup storage without losing data already on it?

I have an 2 TB external hard drive. It is formatted as NTFS format, supported by ntfs-3g which is installed using Homebrew. There is already about 500 GB data existing on it that I need to keep. I now ...
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remove time date information from file

I saw the post on how to change time and date using touch or setfile. Is there a way to remove time and date entirely from a file? I tried xattr -c which did not work.
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Tried to fix filesystem type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF and failed [duplicate]

Initially, I had dual-booted Ubuntu on my Mac. Several months later, I decided I no longer needed Ubuntu on my Mac so I decided to get rid of it. I attempted to this by using Disk Utility on macOS and ...
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My Sublime all of a sudden wont load folders

All of a sudden within the past few days Sublime is sporadically not loading folders, it just stays with the loading icon: I have 10GB left on my mac which is normally plenty. I restarted my computer ...
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Non-Apple-provided files in SIP-protected directories

On my macOS Catalina 10.15.1 system, I think I have some files in SIP-protected directories that were installed by third-party (i.e. non-Apple) software prior to SIP being added to macOS. Is there ...
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Why are my files all now within Volumes?

Today I noticed that in the bottom bar of finder, where it shows my file path, it's showing all my files as being within MacintoshHD/System/Volumes/MacintoshHD: I have this strange file structure in ...
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Does Spotlight index the contents of symlinks?

From what I can tell, Finder searches do not follow symlinks. Is this expected behavior? I can't find it documented anywhere. Background: I've been syncing some PDFs using Dropbox (location A), but ...
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Files on Desktop are not accessible

Device, OS version and other background info: MacBook Pro Retina late-2013, Catalina 10.15.1 FileVault is not enabled. iCloud Desktop/Document syncing is not enabled. Time Machine backup stored on ...
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How to read and manipulate ~/Library/Saved Application State/com.apple.finder.savedState/data.data

Due to a bug in MacOS i've identified that this is the file that is being edited when I make a certain change in MacOS finder. "~/Library/Saved Application State/com.apple.finder.savedState/data....
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iMovie file export swaps '/' and ':' in the filename [duplicate]

When I export my iMovie project to an mp4 File > Share > File (iirc) And name it "Tacos w/ John" for example, the file created is "Tacos w: John.mp4" But if I name it "PROJECT: Yi", it saves to "...
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How to recover apparently missing directory and data from APFS volume? `found zeroed-out block`

TL;DR — My APFS volume appears to be partially corrupted and missing my user directory, /Users/jivan. How can I recover it? Update 2019-11-14 I didn't need to discover the IDs of my files in the ...
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How can this folder be significantly larger on disk than the sum of its files?

I'm using an APFS-formatted drive under macOS 10.14, and I have found that various folders on my hard drive read like this when I use Get Info on them: 2,959,512 bytes (4.1 MB on disk) for 19 items ....
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How to Recover Sparsebundle With Missing File System

I'm trying to recover data from an encrypted sparsebundle on macOS Mojave (10.14.6) that I just discovered became corrupted at some point in the past. It was created several years ago. I have the ...
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How to remove symlinks created after a specific date?

Say I did a ln -s /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/* /usr/local/include/ Now I regret it. How can I delete all these links? The good news is I created them today, so ...
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Is there a difference between launching an app from /Applications vs /System/Volumes/Data/Applications? [duplicate]

I noticed that since updating to macOS 10.15, I get duplicate search results for some apps (due to the new read-only filesystem). If we take Spotify as an example, is there any difference between ...
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Can't find where macOS FUSE is on my system to uninstall and update it

I get this error message every time I login (after recently updated to Catalina). The installed version of FUSE is too old for the operating system. Please upgrade your FUSE installation to one ...
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Strange df (disk space) output since macOS Catalina [duplicate]

Why is this: $ df -h / Filesystem Size Used Avail Capacity iused ifree %iused Mounted on /dev/disk1s5 234Gi 10Gi 15Gi 41% 482117 2448643243 0% / Very different from this: ...
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Rolled back from Catalina back to Mojave but I had two drives one for boot and other for saved files, realised old files are still around

I rolled back from Catalina to Mojave because I was having issues, it was my first time to do so and foolishly didn't use Time Machine. I have two SSDs, one for boot and the other for my files, and ...
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On a MacOS machine, is there any risk or trouble I'll encounter if I put some of my documents into a path that's not under my home ~ directory

I used to store all my files, documents under the ~ path. I am wondering if I put my files out of my own directory, will there be any risk (like losing the files, or messing up my computer)
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How to read Mac OS Extended (Journaled) USB drive if I'm getting: “The disk you inserted was not readable by this computer”?

So, I wanted to do a fresh install of Catalina, and have done a backup on my USB drive. Before transferring the data to USB, I've formatted it as "Mac OS Extended (Journaled)". After I've installed ...
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What is the difference between Full Disk Access and Files & Folders access in Catalina?

From security preferences pane we see below info: What is restricted internally for each of these? Files and Folders access: Allow the apps below to access files and folders. Full Disk access: ...
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Uninitialized HDD after GPT to MBR conversation, 3 HFS+ Volumes and 1 ExFAT

2 TB External Hard Drive. Error during converting from GPT to MBR and now Disk can't be mounted. 'The disk you inserted was not readable by this computer' appears when HDD is plugging in. Files ...
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Simple tool to recover old version of overwritten file

I accidentally overwrote a small text file. I have no selectable TimeMachine snapshots - the "up" buttons are greyed out (note; tried Ctrl + Shift + C to remount but it makes no difference). Which is ...
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How to prevent Excel files from getting quarantined?

I'm using Excel for Mac, version 16.16.14 (190909). I'm running Catalina 10.15 Beta (19A558d). All files I edit with Excel are recently quarantined (checking with ls -la@): com.apple.quarantine ...
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ReFS (NTFS successor) filesystem support

Wikipedia says of ReFS: Resilient File System (ReFS), codenamed "Protogon", is a Microsoft proprietary file system introduced with Windows Server 2012 with the intent of becoming the "next ...
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Why does conversion of non-bootable hfs+ external drive to apfs fail (on macOS Mojave)? com.apple.DiskManagement error -69888

The attempted conversion is failing. Does anyone know why? Disk Utility.app error: Converting “mySSD” to APFS Converting HFS Volume to an APFS Container which will export one APFS Volume The target ...
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How to check the type filter in file open dialog?

In windows, we can check the type filter easily: But in MacOS, it seems the file open dialog has no such thing: The reason why I want to check it: sometimes the open button is unclickable, but I don'...
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High Sierra's Finder don't index files in storage unit

Finder (macOS High Sierra) not show any files or folders that I know are there. It occurs only in with units of a storage appliance (Tiger-Box). In previous macOS versions it works fine. I can see all ...
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Symlinks became files, containing relative paths, within an app bundle, why? How to fix?

I discovered an interesting form of corruption within some application bundles which had been stored on a file server for months and years. The application bundles were installers for various macOS ...
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Unity Case sensitive file system on macOS

I have a NAS which has all of my unity projects on it, I recently bought a MacBook Pro and have connected it to my NAS so my laptop and computer now have their own cloud sorta thing. When I open the ...
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Is APFS an appropriate format for flash drives (“thumb drives”)?

When using Disk Utility to format a cheap slow thumb-drive (USB flash drive), is Apple File System (APFS) now the appropriate Format to choose over the Mac OS Extended (Journaled) that previously was ...
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Two entries with identical name and inode in same directory?

I have just seen the most remarkable thing in a deep corner of my large archive disk: a single directory containing two entries (subdirectories) with the same name and same inode number. % ls -liaF ...
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Determine which app is opening too many files

Sometimes my Mac starts behaving weirdly, a typical symptom being that I can't open certain apps that were working just fine recently. This just happened and I traced this issue to an excess of open ...
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HFS+ corrupted partition recovery with files offsets

At first, I’ll mention some background details that could help better understand the situation. I used 1TB external drive for data storage, then installed it into Optibay to use it inside MacBook ...
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“The operation can’t be completed because you don’t have permission to access some of the items.” when moving OneDrive files

OneDrive has a feature called "Files On-Demand", I'm playing arround with it and trying to figure out how it works. It looks like OneDrive uses sparse files as placeholders before the really file is ...
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Where can I find the APFS format documentation / volume specification?

One of my favorite Mac apps, DiskWarrior, has been waiting for the APFS format documentation (also called the APFS volume specification) for a while, in order to make a new program version which can ...
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Prevent files in a folder from being moved?

On a Mac, is there a way to prevent files in a folder X from being moved by any means (by the Comd+C then Comd+Opt+V on Finder, or by mv command on the command line, or by other apps etc.) to another ...
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How to skip files with ditto command line utility?

I'm trying to import a large (100GB+) iPhoto library located on a seemingly faulty external drive, that always yields an error -36 when I attempt to copy the library using Finder. I therefore tried ...
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APFS on external drive missing from Disk Utility

When I use Disk Utility app in macOS Mojave to format an external drive, I do not see the new Apple File System (APFS) offered as a choice of format. Does it matter that my external drive is a ...
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Is it possible to keep dot files with specific extension unhidden in Finder?

I know that all the hidden files (dot files) can be viewed in Finder by using the keyboard shortcut: Command + Shift + . or by running the following in Terminal: defaults write com.apple.finder ...
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What is the “ls” directory in my home directory?

I was just exploring the directory structure on my Mac and there's a directory in my root/home directory, named ls. [~]$ ls -l . . . drwxr-xr-x 6 XXXX staff 192 Dec 8 2018 ls [~/ls]$ pwd /...
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How to check if any file on Volume Y is missing on Volume Z?

I have multiple external HDD's, many USB thumb drives, a boat load of SD cards and so on. I've not diligently kept everything centrally stored. This goes back years. I now want to clean up this mess ...
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is it safe to delete /private/tmp vs /private/var/tmp?

I see these dirs are bloated with size in many GBs. I have never touched these. Occationally I just delete /private/var/mail/ishandutta2007
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Where are images metadata and album data stored on iPhone? and how to extract them?

I am trying to connect to my iPhone via iTunesMobileDevice.dll and other libraries provided by iTunes. So far I am able to reach the file system and copy images from iPhone. However images are stored ...
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How do currently downloading files show a circular progress indicator besides them in Finder?

When downloading a file using Google Chrome, Mac App Store, or some other app, Finder usually displays a circular progress indicator besides the file name. Out of curiosity, is there any technical ...
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Unable to prevent APFS partition from mounting automatically in Mojave (10.14.5)

I'm trying to prevent macOS from asking me the FileVault password for 2 APFS partitions on boot. I don't want them to be mounted at all. APFS container: /dev/disk1 (synthesized): #: ...
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Entering path containing spaces in Terminal

Working on my MacBook Pro, I want to change the location of my iPhone backup to an external drive, but when entering the command on the CLI I hadn't noticed that the destination drive has a space in ...
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Disk space given back to Mac HD after removing partition, but is not usable [duplicate]

This looks similar to some other related questions here, but has some meaningful differences. I thought it was worth a separate question for that reason. Like others I had an error while installing ...
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1answer
96 views

Rename file names in directory to creation timestamp with second precision

Is there an easy way to do this for files in a particular directory - to have their names be renamed to the file timestamp, with seconds level precision Clarification: For example, suppose a (Mac ...
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Why have symbolic links between files in folders at same depth?

I noticed that in macOS, the /usr/local/Cellar folder contains binaries installed using Homebrew, and that /usr/local/opt has symbolic links to a bunch of those binaries. I haven't used symbolic links ...