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49 votes
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Is it safe to delete these 4 files in the folder called dyld

Is it safe to delete these 4 files in the folder called dyld (/System/Library/dyld/)? Short answer No, in Big Sur and later it's not safe to delete them (from the screenshot in your question, I see ...
jaume's user avatar
  • 15.6k
46 votes
Accepted

"System" storage on macOS Sierra is 470GB!

Download OmniDiskSweeper and analyze your hard drive. OmniDiskSweeper will show you the files on your drive, in descending order by size, and letting you decide what to do with them. Delete ...
FrontENG's user avatar
  • 938
36 votes
Accepted

macOS not showing the actual free space

You probably have some local snapshots on your drive, you can try to list the local snapshots with tmutil listlocalsnapshots / and with tmutil thinlocalsnapshots / 9999999999 1 you can delete ...
GM.'s user avatar
  • 831
21 votes

"System" storage on macOS Sierra is 470GB!

I fixed it on mine, it was to do with the BELLMIN' Time Machine Queue Backup files (i.e. files that meant to go onto the Time Machine but haven't been moved yet due to the TM not reachable or away ...
Heider Sati's user avatar
19 votes

macOS not showing the actual free space

Commands given below resolved the issue for me. Listed and deleted local snapshot and it freed 230 GB on my machine. $ tmutil listlocalsnapshots / com.apple.TimeMachine.2019-01-28-143406 $ tmutil ...
user322552's user avatar
18 votes

Is there a `lsblk` equivalent for macOS that lists all attached storage devices?

Adding this answer to complement aglasser's answer. If you want to list all the USB Devices connected to your mac, run the built-in app System Information (previously known as System Profiler) in the ...
Aditya Vikas Devarapalli's user avatar
18 votes
Accepted

127 million bytes but 204MB on disk?

It's not beyond the realms of possibility. Allocation block size is 4k. If every file was 5k, then they'd each take up 8k on disk, which gives 218MB.
Tetsujin's user avatar
  • 118k
17 votes
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Is it safe to delete the content of ~/Library/Logs?

Yes, log files can be safely deleted. Next time a log file needs to be appended to and is missing, it will be created (don't delete the actual Logs folder itself though). Log files are always presumed ...
grg's user avatar
  • 206k
16 votes
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How is iPhone Storage automatically cleared up?

App containers include a folder called Caches. This folder can be emptied by iOS when storage becomes low. iOS chooses apps which you use rarely and apps which have large quantities of cache stored ...
grg's user avatar
  • 206k
13 votes
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WhatsApp using huge space on my Mac SSD

If you don’t already, I want to suggest in the strongest terms possible that you have a Time Machine backup of your data. A portable 1TB hard drive is not expensive and you can plug it in and Time ...
Monomeeth's user avatar
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13 votes
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Reduce the storage space taken up by "System" on my iPhone 6s without restoring and setting up iPhone as new

No need to backup or restore anything ! I just spent some time with a good Apple Care advisors : this problem is caused by iCloud Drive. If you deactivate it, no more problem. It worked for me.
arnaudambro's user avatar
13 votes

Why the storage of Documents showing wrong in mac?

I was searching for this question. why the summary tell different size with the "actual size calculation" then I realize, maybe there something like some hidden folder in the calculation. with this ...
hamamulfz's user avatar
  • 231
12 votes
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macOS Sierra "System" files eating up disk space

The Solution I used a storage scanning application to see where all the space was going. I used DaisyDisk, but Disk Inventory X is another option Turns out ImageMagick image editing library was ...
matthiasdv's user avatar
12 votes

Is there there an iOS equivalent of Android's "Delete app storage"?

Not really - On iOS, deleting the app only deletes the data in its sandbox. If the developer doesn’t offer this toggle in the settings app (or you don’t trust the developer to actually wipe the data) ...
bmike's user avatar
  • 241k
12 votes

Can I delete the .Spotlight-V100 file

On OSX recent versions .Spotlight-V100 is xattr protected, meaning rm commands are inoperant, whatever privileges you own. This explains the "Operation not permitted" mentioned in the above ...
Leo's user avatar
  • 121
12 votes
Accepted

How do you monitor free disk space?

The system settings app has a graphical storage summary that’s what you need to look at first. Choose Apple menu  > System Settings, click General in the sidebar, then click Storage on the right. ...
bmike's user avatar
  • 241k
10 votes
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Where does Ulysses store its local content?

It’s really up to each program to decide if it stores in the home folder / documents and lets users manage things or if it makes a database in plain view (like Photos or iTunes) with aspects of the ...
benjaminwil's user avatar
10 votes

How to claim free disk space in APFS after deletion of huge amount of files?

Okay, I can answer by myself. In further investigation I came across the hidden space called local snapshot space that is caused by local time machine snapshots and tried to purge them for giving ...
itinance's user avatar
  • 632
9 votes

Why the storage of Documents showing wrong in mac?

The System Information view is misleading by naming it "Documents" Under the category "Documents" it will trow everything in in that is not in the other sidebar listed categories. For example in my ...
Ruskes's user avatar
  • 48.5k
9 votes

My PC has over 200 GB of free storage but iTunes won't back up my iPhone with 64 GB

Here's a fun corollary to Kelly's answer: The error can also appear if YOUR iOS DEVICE doesn't have enough free space. Yes, the error's wording is completely wrong in this case. It says it's your ...
ruffin's user avatar
  • 1,241
8 votes

Is "flash storage" the same "SSD"?

Credit for this answer goes to https://danielmiessler.com Short Answer Let's clear up the definitions: Solid State Drive = a hard drive that has no moving parts Flash memory = a method of permanently ...
Kellen Stuart's user avatar
8 votes
Accepted

Why does `df` use "Bi" as abbreviation for bytes?

It's the difference between the decimal value and the binary prefix. In this case, it's saying you are using 0 binary bytes. What's the difference? Using "Giga" as our example, it means 10003 of ...
Allan's user avatar
  • 104k
8 votes

How is iPhone Storage automatically cleared up?

Is your iCloud Photo Library on? If so, then iCloud could be backing up your photos for you and removing the copies of the older photos that are backed up, from the phone. You can check that by ...
Melvin Jefferson's user avatar
8 votes

Is my Mac 256 GB or 512 GB according to diskutil and “About this Mac” images posted below?

That system has 256 GB of storage. According to both of those screenshots you do not have 512 GB storage on that Mac. There is only 256 GB of storage. The easiest way to see this is via the “About ...
Giacomo1968's user avatar
  • 5,790
8 votes
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M1 MacBook Air Base Model - How Much SSD Free Space exists on my 256 storage Mac?

Calculation of free space on APFS is apparently not so easy (see https://eclecticlight.co/2023/04/12/when-the-finders-error-exceeds-50/ for details). Over those years, the Finder has repeatedly shown ...
nohillside's user avatar
  • 104k
7 votes

"System" storage on macOS Sierra is 470GB!

Your system may need to reindex the file system to correctly show disk usage amounts. Indexing is handled by Spotlight. Using system preferences>spotlight, add your drive to the list of folders not ...
traisjames's user avatar
7 votes
Accepted

Do I have an HDD or an SSD in my MacBook?

All retina Macbook Pros have PCIe SSDs. Previous MBPs (2012 + earlier) shipped with HDDs. To find this out, find your model information by going to Apple (top left corner of the screen) -> About this ...
NoahL's user avatar
  • 3,527
7 votes

How is iPhone Storage automatically cleared up?

While application Caches are indeed part of the cleanup process, an increase in free space this large is typically the OS deleting a pre-downloaded newer iOS update. In your case, this would be iOS ...
falken's user avatar
  • 171
7 votes
Accepted

My PC has over 200 GB of free storage but iTunes won't back up my iPhone with 64 GB

Usually when I see this issue, it's one of the following: The iTunes backup folder is missing, damaged, or has incorrect permissions. The iTunes backup folder was previously redirected to an external ...
Kelly's user avatar
  • 1,573
7 votes

127 million bytes but 204MB on disk?

If all the files are below the allocation block size of the disk by a lot, then that could make perfect sense. 27,254 items all below an allocation block size of 8,192 bytes would lead to an "on ...
Alan's user avatar
  • 332

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