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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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Sparse disk image error 'No space left on device' while limit not reached

I created a sparse disk image of 400 GB with hdiutil command on an empty 500 GB external drive. After I have attached the disk image, I copy data to it. After about 17 GB of data I get an error ...
2 votes
1 answer
85 views

APFS vs HFS+ which is better for storage and music/videos creating/editing? [closed]

MBP M1 Ventura. I use multiple external HDDs for storage /editing videos, photos, original music. Should I convert them APFS or stick with HFS+?
2 votes
1 answer
3k views

APFS Partitions corrupted

I recently ran Boot Camp Assistant to remove the Windows partition from my 2017 MacBook Pro, but during the partitioning step I quit Boot Camp Assistant. After restarting the computer the next time, I ...
3 votes
2 answers
3k views

Cannot resize APFS container even though there is a free space directly after it - diskutil error: -69743

I upgraded to a larger SSD (120 GB to 250 GB), and copied my existing mac SSD to a larger one with dd (clonezilla live usb). It is a hackintosh with a latest OpenCore 0.5.9. However, I cannot resize ...
1 vote
2 answers
225 views

Fresh OS install + Data restore

I need to upgrade my OS, as well as fix the formatting of my main HDD (APFS is not ideal for HDDs). Is it advisable for me to completely start over with a fresh OS install (Sonoma), and then restore ...
2 votes
1 answer
111 views

How to convert multiple partitions to APFS?

I have an external SSD drive which has 4 bootable partitions holding monthly backups. It has a GUID partition map; each partition is MacOS Extended Journaled (HFS+); each is 250GB in size with about ...
3 votes
1 answer
2k views

Encrypted and access-restricted iCloud Drive folders on iOS and iPadOS

I use my iPad frequently in a teaching environment where it is unlocked and used by other people when presenting. Also, when I work with iPad in a shared office (I use iPad with Magic Keyboard as a ...
1 vote
2 answers
408 views

Can't boot into or mount Mojave APFS partition after repartitioning for Linux

MacBook Pro 2015, 256GB SSD disk I have created a second partition on my disk to try Linux. Everything was fine, but at some point, macOS disappeared from the boot menu. After some googling and trying ...
0 votes
0 answers
33 views

Snapshots are too big and constantly fills my SSD!

I keep getting out of space warnings, and the only way to reclaim that is using Daisy Disk. Disk Utility always shows "resource busy". Some thoughts: perhaps it's possible to decrease the &...
2 votes
2 answers
98 views

Leveraging APFS snapshots for custom backup tool

I manage a few Linux servers, and in a few of them, if I want to perform backups, I can leverage filesystem snapshots. I.e. I can create a snapshot and then clone it to a second machine, thus ensuring ...
0 votes
1 answer
413 views

APFS - Catalina - Increase the size of a container

I have a 4TB external SSD. Running Diskutil I get /dev/disk3 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme ...
3 votes
1 answer
643 views

Manually Decrypt Partially Cloned APFS Volume

I recently attempted to clone a failing external drive to a new external drive. The clone failed part-way into the process. The original drive hardware has now fully failed, so I'm trying to recover ...
3 votes
1 answer
87 views

How to modify the macOS 14 volume UUID?

The image below is from version 10.12 of macOS, where the volume is in JHFS+ format. This same UUID can be obtained by entering commands in a Terminal application window, as shown below. $ diskutil ...
1 vote
1 answer
58 views

How to move free space in front of APFS container?

How does one go about changing the starting position of an APFS partition on a drive? In this situation, I would like the 209.4 GB of free space to end up behind the APFS partition so that I can ...
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 ...
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 ...
0 votes
1 answer
63 views

Used iMac just boots to Utilities, can't reinstall OS or sign in under my Apple ID

Trying to update an iMac (2015, I believe?) a friend gave me. They've fully signed out of it, and I have erased the hard drive in disk utilities, but I cannot get it to boot to anything. When I choose ...
3 votes
2 answers
747 views

Unmount Volume on User Logout

I have several encrypted APFS volumes, some of which have their passphrases stored only in specific users' keychains so they can unlock and mount automatically for those users. However, when the user ...
1 vote
1 answer
233 views

macOS 13.4 and ChromeOS Flex USB

I'm trying to create a Chrome OS Flex USB install drive, to install it via Parallels, on macOS 13.4 (2019 i9 MBP). I'm able to create it both via the Chrome browser extension, and the terminal sudo dd ...
1 vote
1 answer
88 views

Remount encrypted APFS volume without explicitly providing password

It is possible to remount an HFS+/CoreStorage Logical Volume using diskutil mount diskXsY if keychain stores the password for that volume, but trying to remount an APFS Volume even though the password ...
1 vote
0 answers
47 views

Mistakenly launched, but did't carry out an OS upgrade (Monterey>Sonoma). How do I get rid of the macOS installer boot menu item?

I'm running Monterey (with OCLP) on a Late 2012 Mac mini "Core i7" (Intel Ivy Bridge). The model identifier is Macmini6,2. The macOS upgrade got mistakenly launched from macOS System ...
3 votes
1 answer
162 views

Undeleteable (dataless?) folder in MacOS: Permission denied, compressed chflag

I'm having a problem deleting a folder that was previously managed by Microsoft OneDrive. The folder is called "WP". I already tried: sudo, disabling SIP, removing chflags. ❯ csrutil status ...
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 ...
0 votes
0 answers
22 views

Receiving error when copying files to external APFS drive

I'm trying to copy a film project from external drive A (formatted with ExFAT) to external drive B (formatted with APFS). This always results in an error message saying: "the item "name"...
0 votes
1 answer
223 views

How to TurnOn FileVault for (Macintosh HD - Data) while it is already On for (Macintosh HD)

I saw on the Apple documents on their website ( Here: https://support.apple.com/en-us/HT210650 ) that Macintosh HD is read-only volume called maybe "startup disk" for system files and user ...
1 vote
1 answer
30 views

Create a local snapshot of an external drive in macOS

I'd like to backup my external drives to my NAS using rsync and not Time Machine, because I occasionally want to actually use these files on the remote server. I'd like to create an APFS snapshot ...
2 votes
1 answer
129 views

How can I mount a TimeMachine Backup snapshot in the Terminal via mount_apfs?

I backup my Apple Silicon Mac (running macOS Sonoma) to an external, directly attached drive via Time Machine. All backup snapshots on that external drive I can list via $ ls -1 /Volumes/.timemachine/...
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 ...
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 ...
1 vote
1 answer
150 views

Where are the TimeMachine Backup snapshots in Terminal on macOS Ventura?

I have set up a new Apple Silicon Mac and attached an external drive as Time Machine. The Time Machine drive I can see in Terminal as $ ls -1 /Volumes ... Persistently ... And in Finder I can in the ...
2 votes
1 answer
1k views

How Do I Create A VirtualBox VM From An Existing macOS Mojave APFS Volume?

I saw a related post but the instructions were specific to VMware Fusion, which I am not using. With Carbon Copy Cloner, I created a bootable backup of the existing macOS Mojave installation that I ...
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 ...
2 votes
1 answer
1k views

Does photorec work on non-encrypted APFS?

I have an Ubuntu live USB with testdisk installed on it. I would like to recover data from the HDD of a Macbook Pro using photorec. The HDD is not encrypted: can photorec recover data from non-...
3 votes
1 answer
284 views

Is APFS more reliable than HFS+ for a network (sparse bundle) drive?

I do Time Machine backups from my laptop to an SMB network drive. No doubt this is inherently unreliable because mounting a disk image over a network connection can result in the disk needing repair ...
0 votes
0 answers
70 views

Overallocation warning in First Aid in Recovery Mode for mid 2015 Macbook Pro on High Sierra

I have a 15” Intel Macbook Pro(mid 2015) on High Sierra. No operation issues with laptop, but one day I ran First Aid and got the error that a volume in Macintosh HD could not be unmounted so the ...
0 votes
1 answer
55 views

What's wrong with my disk and apfs volumes?

I'm learning/trying diskutil, newfs_apfs and other disk command on macOS. My idea is actually this: a) Create a 1 GiB container b) Add 5 volumes of 200 MiB size in the 1 GiB container I run these ...
0 votes
2 answers
43 views

How to create two APFS containers with same size?

I have a virtual disk of 1 GB, on which I want to create two volumes of 400 MB. With diskutil partitionDisk /dev/disk0 2 GPT APFS VOLUME1 400M APFS VOLUME2 400M it created one APFS container of 400 ...
0 votes
0 answers
27 views

APFS snapshot specific volume

Does anyone know how to make an APFS snapshot of a specific APFS volume? tmutil doesn't seem to have that option and tmutil snapshot make snapshots for all APFS volumes. diskutil neither But for sure ...
0 votes
1 answer
52 views

How to increase APFS volume size [duplicate]

I used to have 160 GB macOS APFS container and I upgraded my laptop's SSD with a bigger one and I wanted to increase the size of APFS container to 260 GB. I created an APFS partition and copied old ...
8 votes
2 answers
766 views

Displaying difference between APFS snapshots

Problem APFS is amazing... and infuriating with its lack of tools available. What I'm trying to do is simply an equivalent of btrfs send --no-data -p /snapshots/parent /snapshots/child My ...
0 votes
1 answer
721 views

Why will an APFS fail to mount, but HFS+ on same disk mounts successfully?

I got a new Western Digital 4TB MyBook a year ago that I was using as a Time Machine drive for my laptop. Just today, it suddenly failed to mount. I ran Disk Utility/First Aid on the drive which ...
4 votes
2 answers
6k views

MacOS, how to get folder size (physical size on disk)

Ok so I have a large folder on disk see the image below You can see it says the size of the folder is 8.46GB however this is mostly source code, and I think file system will be using file compression ...
2 votes
1 answer
7k views

Installation failed - In order to continue installing, you need to be an owner

I ran into an interesting and very troubling error when trying to install system updates in macOS 12.4: It seems as though the root of this problem happened during the setup phase of this new Apple ...
16 votes
2 answers
15k views

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 : ...
2 votes
1 answer
88 views

Troubleshooting GUID partition "FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFF" [duplicate]

Running a Mac Pro 2013 with macOS Catalina. Looking to change the GUID type from FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF to 7C3457EF-0000-11AA-AA11-00306543ECAC. I've been browsing through various ...
6 votes
2 answers
52k views

Disk Utility fails with OSStatus error 22 during cloning/recovery operation

Background: I need to upgrade the drive in my Macbook Pro. Following are some of its specs: MacBook Pro (17-inch, Late 2011) OS: High Sierra, v 10.13.6 HDD: 500 GB SSD, w/ Macintosh HD & ...
0 votes
0 answers
52 views

Problem rebooting macbook pro

Need some help. I made a partition of my hd (with high sierra), this new partition is an apfs where I installed another OS (Mojave). I had some problems with restarting, so I could have accessed to ...
1 vote
1 answer
80 views

"reflink" filesystem API for macOS?

On linux, we have the call int ioctl(int, FICLONERANGE, struct file_clone_range *); to "reflink" files. APFS also supports COW and thus a similar system call should exist. However, the ...
0 votes
0 answers
660 views

How to mount and get full access to an apfs partition from linux

I broke my laptop some how (I think from overheating). I dual-boot linux on a Macbook that has got a T2 chip. I can't boot up MacOS, but for some reason linux does. I've got a couple of files in my ...
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 ...

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