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Questions tagged [apfs]

A filesystem developed by Apple Inc first introduced in macOS Sierra 10.12 Developer Release and for public use in macOS High Sierra 10.13.

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Time machine "Delete all backups of <file>" option missing

Previously, when you right clicked a file in the Time Machine view, you had an option to delete it and all its backed up copies. I'm using macOS Monterey, and that appears to no longer exist: Was ...
Alexander's user avatar
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6 votes
2 answers
1k views

Is there APFS system (e.g. API) documentation anywhere? I want to snapshot an external drive

It looks like there must be system calls to create and manage APFS snapshots on external drives. Carbon Copy Cloner uses them in their backup routines https://bombich.com/kb/ccc5/leveraging-snapshots-...
John Abraham's user avatar
0 votes
0 answers
966 views

Slow write speed on APFS external SSD

The SSD is SanDisk Extreme Pro V2, with original cable, formatted APFS (non-encrypted). OS is 12.0.1. There's 10GB of free space. Write speed used to be close to read speed, about 500MB/s. Now it's ...
Lucius Zha's user avatar
2 votes
1 answer
341 views

Time Machine Backup fails from new apfs Volume

I had 11.6 Big Sur on an apfs volume, installed 12.0.1 Monterey on a different volume, deleted the first volume Now Time Machine Backup fails: Time Machine could’t complete the backup to “…” An error ...
Keith's user avatar
  • 51
1 vote
0 answers
186 views

Recovery mode not seeing all APFS snapshots

I formatted external hard drive as APFS and installed macOS Catalina to “macOS Catalina” partition, Big Sur to “macOS Big Sur (Intel)” partition and Monterey to “macOS Monterey (Intel)” partition. I ...
sunknudsen's user avatar
5 votes
2 answers
311 views

Time Machine without any external disks

So, for various security reasons my company doesn't allow attaching backup drives or doing any external backups -- mostly we have cloud things and use git for backup. But Time Machine lets me use the ...
Marvin's user avatar
  • 171
3 votes
2 answers
616 views

MacBook Pro 13" Late 2013 - Cannot reinstall OS after erasing disk

I have a MacBook Pro Late 2013 running Big Sur which I want to sell. Following Apple's guidelines to wipe the drive I erased the main Volume Group in the hopes of reinstalling Big Sur. Ì understand ...
Grasshopper's user avatar
1 vote
1 answer
238 views

APFS File Clone doesn't work as expected with Sparse Files

I have a Virtual Machine disk image in the RAW format (.img extension) that was created sparse with dd if=/dev/zero of=disk.img bs=1m count=0 seek=10240. As expected, it starts off using 0 bytes and ...
ktstuff's user avatar
  • 21
3 votes
0 answers
366 views

Create persistent local APFS snapshots which later get backed up to external TimeMachine volume

My scenario is the following: I have a folder whose contents changes frequently. To be precise, it's my local backup of my Wordpress upload folder wp-content/uploads/ which I rsync in a SSH tunnel ...
porg's user avatar
  • 978
0 votes
1 answer
267 views

Is it safe to encrypt the VM Volume on recent macOS versions?

Background info: I need my McBook to satisfy a newly-rolled-out policy of having "full disk encryption". The relevant software checks this by seeing if all user-mountable volumes/partitions ...
myxal's user avatar
  • 94
0 votes
0 answers
279 views

SSD APFS Corruption

I'm using a Mac Book Pro mid 2012 running 10.15.7on Samsung EVO 1TB internally. It was not possible to boot the computer last Friday. I tried to boot in recovery mode, the SSD was not identified as a ...
Luis's user avatar
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1 vote
0 answers
75 views

Can I migrate my Time Machine from HFS+ to a new drive with APFS?

I am running Big Sur 11.5.2 I bought a new drive (2 x 4TB RAID1 Array) to use in place of my existing 4TB Time Machine drive. Both are USB. I want to migrate my old Time Machine which is HFS+ to the ...
Brian Feeny's user avatar
2 votes
1 answer
595 views

Size on disk smaller than actual size

I have Bitwarden on my machine and looked at the reported file size, wich is 423,6MB. The downloaded file is much smaller, also the reported size on disk is much smaller too with 176,5MB I expected ...
user avatar
2 votes
0 answers
484 views

Unable to claim free space for APFS partition Big Sur

I'm trying to add additional space to my macOS Big Sur. I've tried to do complete the process by using diskutil. Although I did not get any errors, I was unable to claim the free space. Subsequently, ...
roller's user avatar
  • 21
0 votes
1 answer
187 views

Unable to Expand APFS Container [closed]

I'm having a problem similar to this one, where I can't expand an APFS container to fill all available space. Here's my disk layout in Catalina: % sudo diskutil list ...
Aaron Vegh's user avatar
-1 votes
1 answer
459 views

How to Delete Partition in terminal

i just want my mac to have one partition so i can use all the full 250GB. Disk utility did not work. Below is partitions and identifiers if anyone could help me with the CMD i need to return ...
BoboJenkinz's user avatar
0 votes
4 answers
285 views

SSD's "Used" space growing after each Erase / Format & ejecting!

I bought a brand new Samsung T7 SSD, and I used macOS's Disk Utility to format (erase) it in APFS(Encrypted), scheme: GUID Partition Map. Before erasing (brand new), "Used" space was 108,5 ...
user14119170's user avatar
1 vote
1 answer
980 views

Best way to upgrade Time Machine volume to APFS and preserve backups?

Currently my TM backups are on an HFS volume. I would like to switch to APFS (for snapshots etc.) I assume I have to erase the drive and re-format it as APFS. What's the 'correct' way to save my ...
d0g's user avatar
  • 4,002
4 votes
1 answer
3k views

Can I get MacOS to treat an external drive like a normal volume?

I have a Samsung T7 SSD connected to my Thunderbolt 3 USB Type-C port. I noticed a couple of things that seem odd, and I wonder if that is because it is external: Disk Utility will not let me convert/...
Mr. Boy's user avatar
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0 votes
1 answer
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I installed 2 macOS on APFS. the problem is the macOS-1 relate to the second partition files [duplicate]

For example : if I want to open "books" application from the first macOS installed, I can see : "Books 1.4" <---Big Sur. "Books 1.3" <---Catalina. How can I "...
user1105951's user avatar
1 vote
0 answers
168 views

Big Sur automatic hfs_convert to APFS STUCK at 10% on external rotational drive

So I have a 3TB external rotational drive that I only ever used with older macOS versions. Big Sur then decided to automatically do a background hfs_convert to APFS on the external rotational drive ...
D.A. Reyn's user avatar
0 votes
1 answer
2k views

Unable to make an APFS volume within an APFS container [duplicate]

I'm using diskutil eraseDisk JHFS+ dummy /dev/disk0 and diskutil apfs create /dev/disk0s2 DiskSpace to create an APFS volume called DiskSpace within disk 0. However, I run into this error: error: -...
Saiik's user avatar
  • 1
1 vote
2 answers
1k views

how to merge disk2 with disk1 without loosing my data?

I had two macOS (Catalina and Big Sur), Catalina was on Container disk1 and Big Sur was on Container disk2 recently I erased Catalina (Container disk1), so the question is, how to merge disk 2 with ...
Freeman's user avatar
  • 651
1 vote
2 answers
884 views

Dual boot Yosemite and Big Sur (HFS, APFS and other potential challenges)

I'd like to use a clean install of the latest Big Sur (11.4 or 11.5) on a machine that currently has Yosemite installed. I'd like to keep using Yosemite due to some legacy apps/licenses. Ideally I'd ...
questioner56's user avatar
2 votes
1 answer
380 views

MacOS Reclaim free space on Disk for APFS container after deleting APFS Container [duplicate]

I have an 8 TB disk in my Mac. I had 2 APFS containers on it (disk7 and disk8). After deleting APFS container disk8, I get this: The space that the deleted APFS container disk 8 used up is lost and ...
Kentsay's user avatar
  • 21
13 votes
1 answer
3k views

Change the quota size for an APFS volume

I created one APFS Container for the whole of my external hard drive. I created several volumes in that - some with quotas. I have now discovered that one quota is now too small. I used diskutil apfs ...
mmmmmm's user avatar
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7 votes
4 answers
18k views

APFS with external hard drives (non SSD)

I bought a new external hard drive for my Mac. What is the best file system in 2021 to format the external hard drive? I would like to encrypt the hard drive and I only use it with Macs so I don't ...
T. Walker's user avatar
2 votes
1 answer
618 views

Should I be worried about a case-sensitive data volume?

I've got a late-2014 27-inch Retina iMac with a 3TB fusion drive. It's at my workplace, which I haven't been to in over a year as I write this in mid-2021. For various reasons, the machine needed the ...
Andrew Jaffe's user avatar
11 votes
1 answer
450 views

Understanding APFS firmlink black magic

I'm slowly coming to terms with the black magic behind the APFS system/data volume split. Today, however, I found an artifact that I just don't understand: files that simultaneously exist and do not. ...
LoftyGoals's user avatar
1 vote
0 answers
77 views

Difference in free space on 2 mirrored drives?

I have two 16 TB external drives, formatted as APFS, attached to my MacBook Pro running Catalina 10.15.7. Drive A is mirrored to drive B (and I have verified they actually are mirrors using both ...
mrverdantgreen's user avatar
1 vote
1 answer
562 views

How to view the quota limits of an APFS volume that I had set at the time of its creation?

I had set limits on a Time Machine volume on an external hard drive but I'm unable to view it with the "View Info" menu option. I understand we can't change them once created but is there a ...
Srikanth's user avatar
  • 113
2 votes
1 answer
3k views

Cannot delete/erase APFS volume

I have a MacBook Pro (Retina, 15-inch, Mid 2015) running Mac OS Mojave. When I boot it up, it shows a grey screen with a question mark on a folder. I have figured out that the issue is with the ...
Nivranshu's user avatar
3 votes
2 answers
2k views

Can't change APFS external drive icons

Edit: The problem somehow resolved itself today. I'm not sure how, but I suspect it is because I restarted the computer. I don't believe granting Finder.app full disk access was needed, since I undid ...
Tony M's user avatar
  • 898
2 votes
1 answer
799 views

Converting an APFS volume (and it's partitions) to HFS+(non-J) without needing to migrate data

After moving from macOS to a Linux-based distribution, I benefit from deciding to have most of my backups on HFS+ partitions (with journaling disabled using a program that changes the value of ...
Kittywhiskers Van Gogh's user avatar
-1 votes
1 answer
256 views

Deleting Dataless Local Snapshot

When opening my MacBook (10.13) this morning, it immediately froze and didn’t respond for about 20 minutes. After shutting it off and attempting to reboot, the load bar appeared, filled, but then hung ...
Pistol Pete's user avatar
0 votes
1 answer
2k views

Correct way to 'dd' an entire APFS disk

The question has been answered but it's unclear. Why can't I just dd an entire APFS disk? The original question posts the dd command that was used to perform a byte-for-byte copy of a block device....
Tuaris's user avatar
  • 3
0 votes
1 answer
828 views

How can you verify when a drive was last formatted?

I'm trying to determine the date a drive on a MacBook was last formatted. I used to be able check the inode birth time of the root volume, but it appears a recent MacOS update may have changed this ...
korre's user avatar
  • 1
2 votes
1 answer
737 views

10.13 to Big Sur - HDD APFS System volume and HFS+ User Space

I want to install either 10.15 or Big Sur on a small APFS partiton on an internal 1 TB HDD in a Mac Mini. I've clean installed OSX and many other OSses before and am quite comfortable installing OSes. ...
candywrapper's user avatar
0 votes
0 answers
31 views

After installing macOS Catalina or later on a APFS drive, is there a way of removing the system and revert back to one partition only?

I needed a fresh install to perform some tests, so I installed Big Sur on a secondary SSD. I don't need the dual partition setup any more, so I would like to revert the state of the APFS column to one ...
Alfonso Tesauro's user avatar
1 vote
1 answer
2k views

'Update' volume appeared after High Sierra install

This is a spin off from another question. I recently got a 2018 15 MBP with Big Sur on it. I erased the disk and installed High Sierra as I need to run some old software. The install seemed to go fine ...
MichaelSeven's user avatar
0 votes
0 answers
27 views

Help I screwed up APFS Mojave partition FFFFFF error [duplicate]

Apologies for the photo but I couldn't copy/paste because my mac is in recovery mode Basically what I did was have Windows and Debian installed alongside encrypted OSX but this morning I was ...
kkl1974's user avatar
1 vote
1 answer
6k views

Which format should I choose for a Time Machine backup volume?

I'm using Catalina on an formatted APFS SSD and am finding a correct way to backup the OS. In the plugged in external HDD, I create a backup volume with APFS format using Disk Utility. But when I ...
Nils Trieu's user avatar
0 votes
1 answer
36 views

Drive boots but isn't "located"

The APFS drive I'm writing this text from cannot be located by macOS High Sierra. Everything that needs it misses whatever link is necessary to get to it. I can boot, I can use it, I cannot "find&...
firewater's user avatar
  • 115
8 votes
2 answers
8k views

What is the default partition type (case sensitive or insensitive) in Macbook pro 2020 (BigSur)?

I have two questions which I can not find an answer by googling: What is the default or recommended partition type for the latest MacOS (Big Sur)? APFS case sensitive or case insensitive? What is ...
sgon00's user avatar
  • 2,384
0 votes
0 answers
91 views

Creating APFS volume

I deleted my APFS container using the command: diskutil apfs deleteContainer disk2 How can I create a container from my internal ssd?
0xAlon's user avatar
  • 1
1 vote
0 answers
503 views

hdiutil fails to create APFS sparseimage: "no mountable file systems"

In macOS Catalina (10.15.7), I'd like to create and mount a sparse, writeable disk image that uses APFS. Specifically, this works if I create Test.sparseimage on my local disk. I'm just unable to ...
Dan Smith's user avatar
1 vote
1 answer
1k views

Error: -69519 when resizing partition of apfs container scheme

I am trying to resize the partition disk0s2 in my Mac. My diskutil list shows: /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: ...
Gustavomoty's user avatar
0 votes
1 answer
156 views

Disk Utility changing partition types on its own

Whenever I do an operation in Disk Utility the last day it seems that I end up with my APFS partitions set to an unknown partition type (FFFF...) This has happened three times now both after extending ...
Andreas's user avatar
  • 2,125
0 votes
0 answers
39 views

Where are the snapshots saved? [duplicate]

I know that you can manage snapshots with the CLI with the command "tmutil". Unfortunately I don't know where exactly these snapshots are stored in the operating system? Edit: Suppose I don'...
BabyBoy's user avatar
  • 963
5 votes
2 answers
6k views

Enable Finder "Calculate all sizes" checkbox by default

Finder > Show View Options > Calculate all sizes This option causes Finder to calculate the sizes of all files and folders and display their sizes in the Finder list view columns, rather than a ...
pkamb's user avatar
  • 9,000

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