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jimster686

macrumors newbie
Original poster
Nov 1, 2017
1
0
Hello,

I recently formatted all my external drives to APFS.
The result was this:

diskutil list
/dev/disk3 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk3
1: EFI EFI 209.7 MB disk3s1
2: Apple_APFS 499.8 GB disk3s2

There is no container, seems to be just the raw APFS.
I didn't notice. I could write to the disk, all was fine. Until I rebooted.
Now, it's unmountable, unrepairable with disk utility.

Today I upgraded to MacOS 10.13.1 and repeated the same thing on an USB stick:
Result:
/dev/disk9 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +64.3 GB disk9
Physical Store disk6s2
1: APFS Volume tester 978.9 KB disk9s1

Clearly, it works correctly, with container, all fine, after the patch.
--------

I was foolish enough to entrust data to the 500GB partition... desperately trying to find a way now, to make the data readable.
diskutil man page explains, you can create a container, add a NEW device, add a volume, but no way apparently to add an existing "APFS physical store" to an existing container. If I could create a new container and add this raw device, maybe it works, maybe not, but I couldn't find any option for that.

I wrote myself a bash script to get rid of another APFS bug, that prevented diskutil from formatting a disk:

### sudo ./format.sh disk5 DATA1

diskutil list | grep $1
echo "Name: $2"
sleep 10
diskutil unmountDisk force $1
sudo dd if=/dev/zero of=/dev/$1 bs=1024 count=1024
diskutil partitionDisk $1 GPT JHFS+ "$2" 0g

So this creates a journaled HFS+ filesystem with GPT table, after which disk utility offers all FS to format onto it.

I'm grateful for any hints or ideas, on how to make this device readable again.
Creating an image with dd or other tool of the raw device might not work either, since man pages explained about APFS, it needs it's container to be readable. But was does the container store, besides a "link" to it ?
 

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dianeoforegon

macrumors 6502a
Apr 26, 2011
907
137
Oregon
First Time Machine cannot run on APFS.
Second, I would not format any external drive unless it was SSD at this time to APFS.
 

FuzzMunky

macrumors regular
Jul 7, 2007
213
159
Did you ever figure this out? I'm faced with a similar thing. My APFS container just randomly deleted itself after I had installed Paragons APFS driver for Windows. All that is visible is the APFS Physical Store.
 

rock.soff

macrumors newbie
Jan 8, 2018
1
0
LA
Got the same exact dilemma here. Had an external SSD drive formatted APFS with no problem mounting and accessing data. Ran Paragon's Hard Disk Manager for Mac and poof, the two APFS volumes disappeared from the desktop. A message popped up indicating that there is a known bug with Paragon's software in terms of mounting such volumes and said there was an update, but the patch did nothing to restore my drive. Now have an APFS physical store in need of a container; the data is still there according to a look-see with iBored, but I can't find a way to restore the "container reference" that the Paragon app apparently deleted. Eager to hear if there is a way to add an existing volume to a new container ...
 
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