DISK UTILITY/INTERNAL STORAGE ERROR

[countryside]

Disk Utility is saying I have errors... but it made me wonder why do I have so many sections on the app? My other Mac has 3: Apple SSD, Macintosh, Data... I have double.

Any insight?

 

[Weaselboy]

What you are seeing is normal. Here is mine.

 

[countryside]

View attachment 2205387

What you are seeing is normal. Here is mine.

Thank you, this is a relief. Now to figure out why First Aid keeps failing...

 

[Weaselboy]

Use macOS Recovery on a Mac with Apple silicon

Learn how to use macOS Recovery on a Mac with Apple silicon.

support.apple.com

Use macOS Recovery on an Intel-based Mac

Learn how to use macOS Recovery on an Intel-based Mac.

support.apple.com

See if you can boot into recovery and run DU first aid from there.

 

[Honza1]

Had also issue with external drive which DU would not fix. I run DU First aid on the higher items in the structure and after running First aid on one which could be fixed error disappeared. This nested system is bit nightmare - if you get disk error, DU does not tell you which of the "layers" has problem and so you do not know which one to fix. You have to try to fix them all sequentially. Not sure if order matters and how much.
As for this complicated APFS structure - this is now normal and if you google "APFS disk structure" you will get multiple pages where this is explained. It is complicated, but actually cool...

 

[chown33]

You have to try to fix them all sequentially. Not sure if order matters and how much.

Here's the Disk Utility User Guide:

Repair a storage device in Disk Utility on Mac

If you have problems with your disk, use Disk Utility on your Mac to test and repair it.

support.apple.com

It lists the order as:
1. Volumes (steps 2-4)
2. Containers (steps 6-8)
3. Storage Device (step 10)

It doesn't say how important order is.

 

[countryside]

Use macOS Recovery on a Mac with Apple silicon

Learn how to use macOS Recovery on a Mac with Apple silicon.

support.apple.com

Use macOS Recovery on an Intel-based Mac

Learn how to use macOS Recovery on an Intel-based Mac.

support.apple.com

See if you can boot into recovery and run DU first aid from there.

Had also issue with external drive which DU would not fix. I run DU First aid on the higher items in the structure and after running First aid on one which could be fixed error disappeared. This nested system is bit nightmare - if you get disk error, DU does not tell you which of the "layers" has problem and so you do not know which one to fix. You have to try to fix them all sequentially. Not sure if order matters and how much.
As for this complicated APFS structure - this is now normal and if you google "APFS disk structure" you will get multiple pages where this is explained. It is complicated, but actually cool...

Here's the Disk Utility User Guide:

Repair a storage device in Disk Utility on Mac

If you have problems with your disk, use Disk Utility on your Mac to test and repair it.

support.apple.com

It lists the order as:
1. Volumes (steps 2-4)
2. Containers (steps 6-8)
3. Storage Device (step 10)

It doesn't say how important order is.

Thank you all. Issue resolved when performed in the correct order.