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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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What determines whether a drive can be converted to APFS?

Now High Sierra is released and not in beta, I'm wondering what the rules are about covering drives to APFS. The release version of High Sierra auto converts SSDs to APFS on installation. But we know ...
matt_black's user avatar
3 votes
2 answers
32k views

Is it safe to remove APFS containers?

I have upgraded my Mac to High Sierra. So I was just looking at the features when I saw APFS container in Disk Utility. I googled it and found out that it is used for multiple logical drives but I ...
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Can you read and write from and to APFS under High Sierra to FAT external hard-drives?

Like many I have backups on external hard-drives, some are in HFS and others are in FAT32 or NTFS. What happens to those backups with APFS ? I won't be able to access, read and write to or from them ...
MFJC's user avatar
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4 votes
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Can you use an APFS-formatted Mac with a pre-APFS Apple Time Capsule?

I'm thinking of upgrading to macOS High Sierra, however I'm a bit cautious with the APFS, also because it just came out. Are you able to use Time Machine on a Mac with APFS-formatted disks with an ...
MFJC's user avatar
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12 votes
3 answers
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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
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26 votes
4 answers
14k views

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's user avatar
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22 votes
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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 ...
adib's user avatar
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4 votes
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Convert a plain disk "legacy image" so that it can be mounted

I have a plain disk image, created from using dd. When I try to mount it in Sierra (10.12.6), DiskImageMounter.app tells me: legacy image should be converted How do I perform such a conversion? I ...
Thomas Tempelmann's user avatar
9 votes
2 answers
3k views

Create an APFS RAM disk

There are various resources about how to create a RAM disk, but they all deal with HFS+ RAM disks. But how does one create an APFS RAM disk? I tried passing APFS as file system to the diskutil ...
DarkDust's user avatar
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Still not possible to convert HFS+ Journaled boot to APFS?

We're at High Sierra beta 9, and it still doesn't seem possible to convert an HFS+ Journaled boot drive "in-place" to APFS. I tested this with a totally fresh install using a late 2014 27" Retina ...
SMGreenfield's user avatar
2 votes
1 answer
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High Sierra: Can't merge BOOTCAMP partition with APFS container

I feel like this is a known problem on High Sierra, but I can't delete my BOOTCAMP partition to gain "Free Space" and I also can't expand my APFS container that contains my MACINTOSH HD. It's like ...
purestate's user avatar
2 votes
0 answers
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Lost partition after trying to run BootCamp on 10.13 on APFS. How to recover?

After trying to install Windows via Bootcamp on (yes I understand what "beta" means) beta High Sierra 10.13 I was left with unbootable partition: I cannot mount this disk. It's shown as "Mac OS ...
Paweł Brewczynski's user avatar
2 votes
2 answers
11k views

Why was my drive not converted to APFS while installing macOS High Sierra public beta

I was wondering why my drive wasn’t converted to APFS after installing macOS High Sierra public beta. I tried to convert it to APFS after the fact, by booting into Recovery Mode and opening Disk ...
cwong668's user avatar
19 votes
2 answers
14k views

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 ...
user137369's user avatar
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5 votes
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How do I fsck_apfs an encrypted volume?

I'm playing with macOS 10.13 beta but a volume seems to have been corrupted during migration to APFS. I can boot and log in but soon get a "static screen". I launched recovery mode and launched disk ...
Nic  Cottrell's user avatar
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Partition problem with APFS containers in macOS High Sierra

As always I'm so impatient and migrating with my main devices to the first developer previews the day they are available. Which as always bring me only problems but I just cannot help myself. So ...
Markus's user avatar
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How does APFS on macOS handle upper/lower case file names?

So I recently learned here that HFS+ is case-insensitive but the APFS on iOS is case-sensitive. Is there a publically accessible documentation/reference which describes how APFS does handle upper/...
N. Cornet's user avatar
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1 vote
1 answer
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How does iOS change file system format during upgrade to iOS 10.3?

During upgrade to iOS 10.3, the file system format will change from HFS+ to Apple File System (APFS). How can the process retain the user data when changing file system format (how reliable it is? ...
Raptor's user avatar
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1 answer
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How to mount an APFS formatted volume created on macOS 10.12.1 on macOS 10.12.2?

According to this thread from Apple Developer Forums, an APFS volume created on macOS 10.12.1 is not mountable on macOS 10.12.2, because of the incompatible changes. I put some important files in my ...
Siu Ching Pong -Asuka Kenji-'s user avatar
10 votes
3 answers
11k views

Migrate from HFS+ to APFS in-place

Using macOS Sierra, how do I migrate/switch/transition/upgrade the boot volume/partition from HFS+ to APFS in-place? Is this advisable, or perhaps already done by the Sierra installer?
P Varga's user avatar
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4 votes
2 answers
10k views

Switch back to HFS+ from APFS

Recently I heard about new apple file system. Of course I wanted to try it. So I moved all files to one external hard drive for safety... And accidentaly switched it to APFS... How to revert changes? ...
Nikolay Bronskiy's user avatar
1 vote
1 answer
295 views

What is the benefit of nanosecond granularity?

Apple recently announced a new file system for Apple products, Apple File System (APFS). Amongst the characteristics, is Nanosecond Timestamp Granularity. Sure, this sounds impressive, and is a great ...
Fezter's user avatar
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12 votes
4 answers
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What filesystems does iOS use?

I can't find this information documented anywhere. What filesystems do iOS devices use? Did Apple stick with HFS+? Is it different between devices and iOS versions?
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