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4 votes
Accepted

APFS how to remove unexpected "volume group" and keep data

For the MacOS boot disk, this is normal. The "Volume group" for the boot disk consists of the base operating system and a "data disk". This is an intentional design to provide ...
Dan C.'s user avatar
  • 56
4 votes

Leveraging APFS snapshots for custom backup tool

What you describe is possible, implemented and already done with a commercial product SuperDuper https://shirt-pocket.com/SuperDuper/SuperDuperDescription.html My thinking is: you don’t want rsync ...
bmike's user avatar
  • 238k
3 votes
Accepted

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

Part 1 - the role of /Volumes/.timemachine There is a misconception about what is in /Volumes/.timemachine/<GUID>/. It contains mount points which may or may not have mounted TM snapshots. Some ...
Gilby's user avatar
  • 11.4k
3 votes
Accepted

Deleting APFS volume doesn't free up any space

The only solution I could come up with was to delete and recreate the entire container. Funnily enough, before deleting the container I had first copied the entire APFS partition with GParted to a ...
Andreas's user avatar
  • 2,125
3 votes
Accepted

Fusion Drive using external SSD & HDD

It's possible: though I would advise against it. Fusion Drives were a nifty use of CoreStorage a decade ago, when SSDs were limited in size and expensive. Fusion Drives are designed to retain a small (...
benwiggy's user avatar
  • 36.8k
3 votes

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

I can’t recommend HFS+ for anything but external disks that are magnetic and workload that is read write. That’s precisely your setup, so go with HFS+. Everything else should be APFS (storage HDD, ...
bmike's user avatar
  • 238k
3 votes

Fresh OS install + Data restore

I'd recommend to use an external SSD if your Mac only has a spinning hard drive. The later macOS versions (Ventura, Sonoma) are not designed for hard disks and won't be performant if not installed on ...
andaris's user avatar
  • 31
3 votes
Accepted

Fresh OS install + Data restore

The only reason for wiping the whole disk is your requirement to switch to HFS. Normally, upgrading the OS should never require erasing anything. There is no point in a "clean" install, if ...
benwiggy's user avatar
  • 36.8k
2 votes
Accepted

Missing free space after Sonoma, and it's not Snapshots!

In Disk Utility - you have Command 2 to show all devices. Then top to bottom, some of the "disks" are full even though I have plenty of space on the Mac. Also, with Copy on write and linked ...
bmike's user avatar
  • 238k
2 votes
Accepted

Why do fsck_apfs and tmutil report a different number of snapshots?

This is more of a meta-commentary than an answer, but as owner of many old Mac Pros stuck on Mojave, I feel the OP needs to be aware. Do you have a very current 'real' TM backup? If so, I'd just thin ...
Tetsujin's user avatar
  • 117k
2 votes
Accepted

How to create two APFS containers with same size?

You need to add a third triplet which instructs diskutil where to put the remaining unused free space. For example, to place the free space after the second APFS container of 400 MB, the command would ...
David Anderson's user avatar
2 votes

How to increase APFS volume size

I found the solution from another post: APFS Container Disk & APFS Container Scheme Mismatch - Cannot Resize I need to resize the container to smaller to fix the mismatch and then resize with 0 ...
coolman's user avatar
  • 21
2 votes

Limit Time Machine size in Big Sur

You can set a quota by getting the long hexadecimal id from the command tmutil destinationinfo and then using sudo tmutil setquota {ID} {SIZE_IN_GB} This quota can then be changed later by using ...
Ilya Grigoriev's user avatar
2 votes

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

Your new backups are using APFS format, the old ones were HFS+. This has brought a major change to Time Machine in terms of how to find the backups and, more importantly, much increased reliability. ...
Gilby's user avatar
  • 11.4k
1 vote

How to modify the macOS 14 volume UUID?

I still have not found a way to do what you are asking. After some thought, I realized there probably would never be a need to do so. I do not think one could never mount the same snapshots with the ...
David Anderson's user avatar
1 vote

Create a local snapshot of an external drive in macOS

This is not an endorsement, but "Carbon Copy Cloner" can do that. https://bombich.com/kb/ccc5/leveraging-snapshots-on-apfs-volumes
Linc D.'s user avatar
  • 995
1 vote

Remount encrypted APFS volume without explicitly providing password

A passphrase or cryptographic key is required to unlock an encrypted volume. This can not be avoided. It is possible to avoid requiring user interaction to provide the security credentials. The ...
Graham Miln's user avatar
  • 44.1k
1 vote
Accepted

What's wrong with my disk and apfs volumes?

Let me start by creating a 1 GiB sparse disk image which contains a GPT with single empty APFS container. The commands are given below. Note that for 1 GiB disks, an EFI partition is not created by ...
David Anderson's user avatar
1 vote

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

A simple easier way to do this without any third party tools or Apple-created apps is to use the Unix dd command, as shown. First you will want to locate the the Old SSD's Disk ID. You can find this ...
Missing User's user avatar
1 vote

How to convert macOS Extended Journaled to APFS?

As far as I know it is not possible to convert an macOS Extended Journaled drive to APFS without losing data. The only way I was able to install a newer operating system was to backup the drive with ...
kevin's user avatar
  • 201
1 vote

"reflink" filesystem API for macOS?

No, macOS does not currently have an API that allows you to clone only a range. You can use clonefile()/clonefileat()/fclonefileat() to clone a full file. After you have cloned the file, you can make ...
jksoegaard's user avatar
  • 78.5k
1 vote

Restoring an APFS disk image cloned with (G)DD

As pointed out by nohillside this answer explains how to fix this issue, I hadn't seen it while looking through similar questions.
ShouldBeAtTheBeach's user avatar
1 vote

Estimate "true" APFS disk usage of folder without counting cloned files multiple times

Yes, that method would be a starting point in getting the "true size" of the folder. In practice, you would need to start with defining what you think is the "true size" of a ...
jksoegaard's user avatar
  • 78.5k
1 vote

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

I just stumbled upon this same error, never seen it before! Learn something new every day. So, apparently, from what I've read, the FIRST account created on the computer is the 'owner', and any new ...
MacMind's user avatar
  • 91

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