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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.

557 questions
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1 answer

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 is /System/Volumes/Data, which I tough it would be…
Dan
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5 answers

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 to free it up. How can I force TimeMachine to…
Martin
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26
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3 answers

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 Toshiba Canvio® Advance Portable External Hard Drive…
Basil Bourque
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4 answers

Does Time Machine support APFS?

I just updated to macOS High Sierra. What's the best way to use Time Machine under Apple's new APFS file system. Should I use Disk Utility to convert my external Time Machine volume to APFS?
Janosh
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4 answers

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 erase this partition, so I decided to do it…
Scaraux
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22
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2 answers

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 be supported. Is it per file or volume ? I am using…
Sidias-Korrado
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22
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5 answers

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 just clones the metadata. That prevents it from…
pidge
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22
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1 answer

APFS folder encryption?

From the feature list APFS supports per-file encryption. Hence by extension it should be possible to setup an encrypted folder (or at least just the files within that folder) with a password that is different than the user login password. …
adib
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19
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4 answers

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 not seam to work in High Sierra. Both volumes will…
Optimus1509
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Does it make sense to format an external HDD as APFS?

I’m currently on macOS Sierra and will upgrade to macOS High Sierra as soon as it comes out, which means my machine will be using APFS. I also have an external HDD (not SSD) that has quite a few years on it, already. I use it solely for storage. I…
user137369
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2 answers

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 caused by APFS Snapshot usage by Time Machine) I…
Neil
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16
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8 answers

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, a command exists to set a maximum size in…
Unrelated
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16
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1 answer

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, encrypted). Is that even possible? Or should I make…
Urs
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15
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1 answer

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 APFS (Encrypted). I want full encryption on the…
Chef Tony
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15
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2 answers

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 : Partition type suddenly…
Nicolas Lorand
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