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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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16 votes
2 answers
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OS volume shows as type 'FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF'

Yesterday, I have tried to delete an Ubuntu partition. Since, my Mac (13", MBPro mid-2014) doesn't boot. Now, I boot on Mac OS copy with an USB. i follow different subject of this forum (like this : ...
Nicolas Lorand's user avatar
53 votes
1 answer
49k views

What's /System/Volumes/Data?

New mac user here (Linux background). I'm running macOS Catalina (Beta5). I've noticed there are 5 volumes in my main disk container. One is mounted at /, that I understand, it's the system, another ...
Dan's user avatar
  • 513
24 votes
4 answers
48k views

How can I merge primary APFS partition with other empty APFS partition?

Using the latest Macbook Pro with currently High Sierra 10.13.1, I was using bootcamp for a year, and I decided to get rid of the Bootcamp partition this morning. The Bootcamp utility would not let me ...
Scaraux's user avatar
  • 433
1 vote
2 answers
12k views

How to make remove free space and make APFS container take it up

I am on 11.1 Big Sur beta. I have a partition with no disk identifier called (free space) I would like to remove this, and then make the APFS container take up the free space. Here is a screenshot of ...
user avatar
4 votes
2 answers
16k views

macOS partition disappered after installing windows 10 using bootcamp

I use a macbook pro 2015 with macOS High Sierra. I installed windows 10 using bootcamp, which resized the macOS partition and created a 80GB windows partition. The machine boots into windows just fine....
elsni's user avatar
  • 141
3 votes
2 answers
2k views

Lost my APFS partition after using EaseUS partition manager on Bootcamp

I used macOS mojave(APFS partition) and Windows10(Bootcamp). And I tried to expand Bootcamp partition with moving Windows OEM partition by EaseUS partition master in windows. After this, I can’t find ...
Masanobu Aricawa's user avatar
20 votes
4 answers
23k views

How to prevent auto mounting of a volume in macOS High Sierra?

I am trying to prevent 2 volumes from mounting at startup. I created a new fstab using vifs and added the UUIDs of the volumes I don't want to mount at system startup, but for some reason this does ...
Optimus1509's user avatar
36 votes
5 answers
45k views

How to delete all local TimeMachine snapshots

I have automatic backup enabled and local TimeMachine snapshots take a large amount of disk space. This space is listed as purgeable in disk info, but cannot be actually used until the system decides ...
Martin's user avatar
  • 961
20 votes
3 answers
21k views

Can't resize APFS Container: Not enough free space in Container due to APFS limits or tidemarks

When I try to resize my APFS container, I get the following error: Error: -69531: There is not enough free space in the APFS Container for this operation due to APFS limits or APFS tidemarks (perhaps ...
Neil's user avatar
  • 1,941
4 votes
1 answer
4k views

Remove macOS from a APFS container?

I'm interested in taking a look as macOS Mojave but am not willing to install it on my main production machine. However, I do not have another Mac to hand so have found myself upon this guide from ...
Rocco's user avatar
  • 674
2 votes
2 answers
16k views

Unable to format internal drive as APFS on 2018 MacBook Pro

I’ve recently ran a semi-routine clean install on my 2018 MacBook Pro. This involves the following steps (in the given order): Creating a USB installer with the latest macOS Mojave 10.14.2. Booting ...
yadon's user avatar
  • 21
10 votes
5 answers
37k views

How do you perform a clean install of macOS High Sierra with APFS?

I have macOS High Sierra installed on my MacBook Pro already with the APFS format. However, I would like to know the steps involved to perform a clean installation of macOS High Sierra with the APFS ...
Caleb's user avatar
  • 101
6 votes
2 answers
1k views

Time machine restore to new external drive

As you read through this post, for reference, the machine on which I'm trying all of this is running Big Sur. I was using Time Machine to back up an external drive that failed. Having purchased a new ...
Christoph's user avatar
  • 163
2 votes
1 answer
2k views

Failed attempt to fix macOS partition startup volume set to FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I attempted to fix an issue I encountered yesterday my MacBook Pro (13-inch, Mid 2012) following instructions in the top answer of this thread. I'm afraid I may have inadvertently destroyed my data by ...
trevorraney's user avatar
22 votes
9 answers
11k views

Limit Time Machine size in Big Sur

In setting up a new Time Machine, how can I limit how much disk space Time Machine has access to? I am only interested in answers relevant to Big Sur's change to AFPS for Time Machine. Before 10.13, ...
Unrelated's user avatar
  • 555
15 votes
3 answers
12k views

200GB unused, but can't change APFS container size due to minimum requirement

I want to create a partition with a different filesystem but in order to do that I need to resize my APFS container. This container has 292,4 GB used space. Its minimum size is 500,07 GB. This ...
Merlijn Vos's user avatar
14 votes
5 answers
42k views

Can you update to macOS 10.14 (Mojave) without converting to APFS?

At WWDC 2018 macOS 10.14 or macOS Mojave was disclosed. I am currently on macOS Sierra (10.12) and am looking forward to upgrading to macOS Mojave once its released. I was wondering if it will be ...
user7886229's user avatar
  • 10.1k
13 votes
2 answers
47k views

How to remove a container disk and reclaim space with main partition?

I used to have a bootcamp partition but somehow while attempting to remove it its changed into a container disk. (don't know how this happened, I didn't explicitly create a container). diskutil list: ...
Piepants's user avatar
  • 277
9 votes
2 answers
15k views

APFS/High Sierra - `tmutil deletelocalsnapshots` not deleting snapshots

Listing local snapshots yields this > tmutil listlocalsnapshots / com.apple.TimeMachine.2018-01-30-194719 com.apple.TimeMachine.2018-01-30-211627 com.apple.TimeMachine.2018-01-30-224917 com.apple....
Dylanthepiguy's user avatar
8 votes
2 answers
45k views

How to fix my corrupted APFS container?

I'm using MBP late 11 running 10.13.2 on Samsung Evo 850 250GB internally. Everything was fine for months but few days ago something horrible occurred. I'm so shocked and urgently need your help. ...
James K's user avatar
  • 81
8 votes
1 answer
3k views

APFS - Is it possible to install 2 macOS versions inside one APFS container?

As you might already now, a single APFS container can have multiple APFS partitions inside. Their advantage is the free space is shared between partitions. Today I decided to try out macOS Mojave ...
user avatar
7 votes
4 answers
10k views

macOS Mojave won't install updates past 10.14.1 due to requirement for APFS formatting

I have a MBP 2012 I upgraded from High Sierra to Mojave after it came out as GA. I don't recall if I was asked about upgrading to APFS when Id id that, but at this time the main volume is Mac OS ...
lonstar's user avatar
  • 214
6 votes
3 answers
29k views

Can Mojave be installed on separate APFS volume under Catalina?

I am running Catalina as my primary OS but am finding that I'd still like to run some 32-bit apps. Is it possible to create a new AFFS volume, install Mojave and simply run a dual-boot system? Things ...
nipponese's user avatar
  • 716
5 votes
1 answer
15k views

How can I fix my partition table?

I think I severely ruined my partition table. I had a BOOTCAMP partition, a macOS APFS partition, and an exFAT partition. I believe I also had 17GB of unallocated space. I tried to shrink the ...
PiAhoy's user avatar
  • 81
1 vote
1 answer
2k views

Fix a sometimes happening prohibitory sign 🚫

Well, I know there's an answer to a similar question here: Getting a 🚫 sometimes on boot, but this is slightly different. My system is running on external drive. Actually on an external ...
Eugen Eray's user avatar
12 votes
3 answers
13k views

How to prevent conversion to APFS on High Sierra install

The current understanding seems to indicate that "all SSD" machines will have at least their main/root file system converted to APFS on the install of High Sierra. That means HFS+ is still a viable ...
LаngLаngС's user avatar
  • 8,349
4 votes
2 answers
10k views

How can you create a valid/reliable disk image of APFS drives?

Last year before Catalina was released, I tried to perform a disk image of my boot drive of Mojave (macOS 10.14) on a new computer before updating and customizing it. I have done this for years to ...
sw.smayer97's user avatar
4 votes
1 answer
2k 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 ...
zakmck's user avatar
  • 394
1 vote
1 answer
787 views

Extand main APFS partition on MacOS Mojave 10.14.3

As it can be seen from the screenshot below my APPLE SSD is of size 500GBs, but my Apple_APFS Container disk1 is of size 450GBs. There was a Container disk 2 of size 50GBs before but I successfully ...
Stefan Stefanov's user avatar
28 votes
3 answers
41k views

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 ...
Basil Bourque's user avatar
11 votes
6 answers
11k views

How to use tmutil delete on Big Sur, APFS

I'm using macOS 11 Big Sur and APFS. I sometimes want to remove old backups to save space. I don't want Time Machine taking up the entire external drive. % tmutil listbackups 2020-10-18-001052.backup ...
Rob N's user avatar
  • 1,700
10 votes
4 answers
5k views

Is it possible to limit the size of an APFS volume?

My understanding is that with APFS, volumes exist inside containers, and the volumes all grow as much as needed, as long as there is space in the container. But I want to limit the space for the ...
Rob N's user avatar
  • 1,700
9 votes
2 answers
5k views

APFS container over multiple physical disks

I have an encrypted APFS container with several volumes. The container lives on a physical partition (disk0s1), which is followed by more partitions (disk0s2, ...) with no free space in between. I ...
Aayla Secura's user avatar
9 votes
2 answers
5k views

3rd party SSD with High Sierra

If I install High Sierra on a 3rd party SSD, will the main volume's file system be converted to APFS? The hardware is a Early 2011 13" Macbook Pro with a Crucial M4 SSD.
Batman's user avatar
  • 1,142
8 votes
3 answers
28k views

Resize APFS partition in Mojave

I'm attempting to resize a partition that's too small for my needs. Here's the output from diskutil list: ~> diskutil list /dev/disk0 (internal): #: TYPE NAME ...
Adrian's user avatar
  • 113
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
7 votes
3 answers
3k views

Is it possible to copy an entire APFS format Time Machine disk to another drive under Monterey?

I have an old USB connected SSD that I have been using as a Time Machine target on a Mac running macOS 12 (Monterey). This old drive was setup on this Mac under Monterey so it was formatted APFS from ...
Rumboogy's user avatar
  • 306
5 votes
1 answer
5k views

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? The SATA cable in my MacBookPro9,2, which was running Mojave, failed ...
Jivan Pal's user avatar
  • 1,225
5 votes
1 answer
7k views

How does APFS encryption work?

I recently upgraded my 2013 MBP to High Sierra. This changed my unencrypted file system to encrypted APFS. Does Apple provide any information about how APFS encryption works? Does the account ...
u17's user avatar
  • 198
5 votes
3 answers
4k views

How do I know if a time machine backup is running?

Due to APFS having a mind of its own and filling the hard disk with unwanted snapshots, I made a cron to run tmutil deletelocalsnapshots xxx. Later I found out that running this command while a backup ...
Grzegorz Adam Hankiewicz's user avatar
4 votes
1 answer
2k views

135GB of Hidden Space + Snapshot Metadata Tree Invalid error in Disk First Aid

I have a serious problem with "Hidden Space" eating up my hard drive. I'm running High Sierra on a mid-2013 MacBook Air "Core i7" with a 500gb ssd. The last few weeks, something has to been ...
YourGunIsDiggingIntoMyHip's user avatar
4 votes
1 answer
2k views

How does APFS manage snapshots?

This page - Apple KB: Prepare for APFS in macOS High Sierra - says that APFS supports "snapshots" as one of its features. Can someone explain how this works? I get the basic concept of what ...
user297373's user avatar
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
3 votes
2 answers
3k views

MacOS Cannot format to APFS [duplicate]

I am experiencing an identical problem to the one in: Unable to format internal drive as APFS on 2018 MacBook Pro However this thread in unanswered and unresolved My internal drive can format to ...
Guy Torbet's user avatar
3 votes
2 answers
2k views

Lost APFS partition after resizing partition in windows

I was trying to resize windows partition using EASEUS partition manager in windows to free up unallocated space so that I can extend APFS partition in macOS but I failed to boot into macOS after ...
Aman's user avatar
  • 53
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
2 votes
2 answers
3k views

Why can't I just dd an entire APFS disk?

I've received a new Mac that has come preconfigured with lots of junk. Naturally, my first order of business is to wipe the disk and clean install macOS. But first, I want to create a bit-perfect, ...
d4rk's user avatar
  • 23
2 votes
1 answer
2k views

APFS/High Sierra - tmutil deletelocalsnapshots will not delete snapshots - Error parsing argument

This is kind of an addendum to APFS/High Sierra - `tmutil deletelocalsnapshots` not deleting snapshots as I've discovered a new quirk in tmutil My snapshots all have am or pm appended. I have no idea ...
Tetsujin's user avatar
  • 117k
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
1 vote
0 answers
78 views

MacBook filesystem FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF after deleting linux partition [duplicate]

So I have MacBook Air late 2015. I’ve been using bootcamp for a while. Yesterday I installed rEFInd to use triple boot for Linux. Made partition for Linux. Later I decided to delete this partition ...
NOSTRADAMUS's user avatar