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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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 ...
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Can I make snapshots of an APFS non-bootable volume?

I have a Samsung FIT external drive with two partitions. One is ExFAT for interchange with Linux Systems. The other partition is APFS (Encrypted). I would like to backup the APFS volume using ...
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How to fix a Damaged APFS disk?

I have an issue with a 1TB 850 Evo, serving as an external disk in a SATA enclosure. I would Really like to recover the data I have on it so any help would be greatly appreciated. Readout from GPT ...
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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. ...
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APFS system volume gone after Macbook Air logic board failure

I only have partial information, and do not 100% know the exact OSx version or how full the drive was, but I think it was pretty topped out. No recent backups, important data, and I have already put ...
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How to convert internal boot SSD from HFS+ to APFS?

Many web pages claim that when you install 10.13 on an SSD, you have an option to convert to APFS. Many others claim that when you install 10.13 on an SSD, you will be converted to APFS whether you ...
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Change APFS Volume to case sensitive

I have a macbook pro with 1TB internal glued flash drive, of which around 600GB are full. I would like to change the volume format from APFS (case insensitive, encrypted) to APFS (case sensitive, ...
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Very slow write performance 30min+ for 2GB - APFS?

Yesterday I have been working with Docker on my MacBook Pro 2012 which runs Mojave and the internal drive has been automatically converted to APFS (seems to be so for startvolumes since Mojave). It ...
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APFS encrypted volume, how to get actual free disk space

I have a APFS volume running macOS Mojava. When I right click on the volume and click Get Info it shows: Which in iteslf is confusing because available says 73.99 GB, but used shows all the disk is ...
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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 ...
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How to tell if I'm using HFS+ or APFS?

Using diskutil, or other command line tools, how can I determine which filesystem I'm using? # sw_vers ProductName: Mac OS X ProductVersion: 10.8.5 BuildVersion: 12F45
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How to Mount extended case-sensitive journaled volume on APFS directory, permanently if possible

Source: /dev/disk0s3 UUID=894D79A6-40BD-306A9784-BEBAB444B1A hfs, local, journaled case-sensitive Destination: /dev/disk1s1 UUID=F692F645-EE36-3CD6-AC09-BCD8FFCC6F3C apfs, local, journaled ...
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Why is my iMac able to write to an NTFS external drive but not my MacBook Pro

My iMac (standalone desktop running Mojave) which is formatted as APFS is able to read and write to my Seagate external drive (which is formatted as NTFS). Yet my MacBook Pro (which was formatted as ...
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how to covert macOS Extended Journaled to apfs?

My Macintosh HD is running Sierra from which partition for mojave was made which doesn’t has APFS option. Installed Mojave 10.14.2 on a MacBook Pro mid 2012 which has HDD and volume formatted in ...
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MacBook pro mid 2014 with High Sierra and APFS - Overallocation Detected on main device

Can somebody explain what 'Overallocation' means in context of file system? I constantly see this message when trying to resize APFS partition, disk checks don't find any problems.
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Replace existing duplicate files on APFS with clones

Is there a way to use the copy-on-write cloning feature of APFS to reclaim space from existing duplicate files? When you copy a file on APFS, it doesn't actual duplicate the file blocks, instead it ...
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Is there a way to go back to a previous state of an APFS Partition on an external drive?

My question sums it up. I would like to go back in time on a partition on an external drive which is formatted on APFS. Decrypting a VirtualBox image, VBox crashed (as it does all the time in Mojave) ...
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How to use `tmutil compare snapshot_path`?

man tmutil shows compare [-@acdefglmnstuEUX] [-D depth] [-I name] [snapshot_path | path1 path2] If a snapshot path is provided as the sole argument, tmutil will compare the computer to the ...
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Re-install MacOS (High Sierra) with terminal

This may be a bit of an open-ended question: I am would like to do an OS reinstall of High Sierra, but block it from converting the disk to the APFS format. This would necessitate the use of terminal ...
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How to convert FusionDrive to APFS?

Backstory: Installation of MacOS Mojava failed on my late '12 iMac with exception: com.apple.DiskManagement error -69854. I can find few other questions with this problem, but the general consent is, ...
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596 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 ...
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Cannot partition w/ Boot Camp Assistant on macOS Mojave

Late 2016 Macbook Pro running Mojave 10.14.3, APFS-formatted (ugh). I have run Disk Utility to verify my disk, and I've run fsck -fy from single-user mode several times. Both of these have reported ...
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APFS Encrypted vs APFS + FileVault?

I upgraded the SSD in a Mac Mini and I'm reinstalling Mojave via internet recovery. The disk is completely erased right now, and when creating a new partition it asks me if I want to choose APFS or ...
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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 ...
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Why is encrypted APFS on SD cards so slow?

When writing any data to SD cards, the operation is usually very slow compared to other kinds of media (up to tens ob MBytes/s). However, when using an encrypted file system on the SD card, such as ...
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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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Is there any way to disable APFS local snapshots?

APFS local snapshots are generally a pain for me, especially on some of my systems with small internal drives. All of my systems have Time Machine backups and the hourly backups it performs are more ...
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How do I split Fusion drive on Mojave / APFS?

I have a 2013 iMac (27" 3.5GHz i7, model id iMac14,2, EMC 2639) that has a Fusion drive. I want to replace the Fusion's internal HDD with an SSD. My understanding is that I should split the Fusion ...
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How to resize (grow) APFS partition that is at the end of the drive?

[new info below post] -- I'm having trouble resizing an APFS partition on the 240Gb SSD in my Mac. I want to make all space available to the system partition "Macintosh SSD". Output of diskutil list: ...
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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 ...
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Cloned SSD After prohibition symbol - files lost?

After getting a prohibition symbol about four weeks ago I cloned my internal SSD to an external APFS drive and got the error message "APFS inverter failed to invert the volume - invalid argument". I ...
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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 ...
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Why Apple partitions the SSD drive this way, and which partition should I removed?

I am planning to reformat both of my drives in my 27 Inch iMac (mid 2011), and I have a question about the way the SSD is partitioned by Apple. Why are there are three tiers in my SSD? I don't want ...
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Cannot resize APFS partition - “The new size must be different than the existing size”

I have a 1TB SSD on macOS High Sierra 10.13.6 with the following APFS partitions: $ diskutil list /dev/disk0 (internal): #: TYPE NAME SIZE ...
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How to change the boot order of APFS volumes? [duplicate]

I recently set up a new APFS volume to support dual boot for the macOS Catalina beta alongside my Mojave install. Unfortunately, this new "beta OS" volume seems to have set itself up as the default ...
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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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563 views

APFS - how do I enable transparent compression

How do i enable transparent filesystem compression on any APFS volume? Or check if it is already enabled? I am expecting something similiar to NTFS compressed attribute. According to Wiki it should ...
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Unable to open files recovered from ContainerToInvert

It's been a week that I have been trying to recover files from ContainerToInvert after having to recover and delete my main hard drive. Now after using this side: Can ContainerToInvert file be ...
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Can anyone help me figuring out what's wrong with my drive structure?

I've realized something is wrong with my disks/drives/partitions structure when I tried countless installing Windows via Bootcamp but it would always fail. Please take a look at what I have: This is ...
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Computer Froze, Now Raid over iSCSI (APFS Format) is no longer mountable. GPT/MBR not present

I was exporting video in Premiere and the computer froze so I had to restart. Upon restarting, I noticed the raid drive I connect to over iSCSI was not showing up on my desktop. However, it appeared ...
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unable to find Paragon NTFS for Western Digital(WD) external drives

I have had Paragon NTFS 15's free version for Western Digital Drives. Just like Seagate offers. Somehow I had to erase my MacBook Pro and the software has been deleted. So now I am unable to find it ...
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Unable to view Trash on APFS-formatted external drive

I am on macOS Mojave running iTunes with its library stored on an external drive. Both my main machine and external drive are formatted in APFS. When I delete a song on iTunes, the file never gets ...
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How to unlock APFS volume with iCloud account data?

During upgrading to Mojave, the disk is locked and I see the prohibition sign when boot up. I understand that now I need to unlock my volume. But I tried my usual login password it didn't work. It ...
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How to prevent auto mounting of encrypted APFS volumes by diskarbitrationd

running 10.14.5 on a 2019 iMac. diskarbitrationd is responsible for noticing the appearance of new block devices and mounting them. this kind of auto mounting can be prevented by configuring /etc/...
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Question about custom partitions, VeraCrypt and APFS

After a couple of years of delay, I've upgraded to High Sierra. Now, I have an external disk used for backup, with the following layout: /dev/disk6 (external, physical): #: ...
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tmutil - Failed to delete local snapshot

My mbp is stuck on boot and fsck cannot be performed because of: snap_metadata_val object (oid <aléatoire>): invalid extentref_tree_oid (0x0) It happens that I have dataless snapshot and if I ...
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1answer
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161gb not appearing on diskutil after deleting second OSX partition

I deleted my second OSX partition and I'm missing 161gb of space. It's not appearing on diskutil or Disk Utility. I have to keep the Untitled2 partition because it stores files I need. diskutil list ...
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How can I prevent files emptied out of the Trash from accumulating in “purgeable space”?

I'm having the same problem as the person who asked this question: I cleared a bunch of files out of my Trash and instead of getting free space on the volume, I got 30 gigs of "purgeable space". ...
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APFS Container Disk & APFS Container Scheme Mismatch - Cannot Resize

I have an issue where I screwed up my partitions by removing a PC formatted partition, and it did not recombine itself with my overall partition. Issue happened because I got a new SSD, loaded my mac ...
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1answer
194 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 ...