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All of our lab computers have file system type Mac OS Extended (Journaled) on the boot partition. We needed to create a separate partition for use with a specific software, so we carved off 10 GB from the boot partition and made a 2nd partition (Examplify_backup). We created the partition by booting from a USB drive and resizing the boot partition (it still had tons of space so 10 GB wasn't a big deal). When we first did this we found that the file system had been set to Mac OS Extended [no Journaled] and since this format was read-only we had to reformat it.

That worked for a while, then the volumes on all the computers started reverting back to Mac OS Extended when they rebooted. As of right now I can login to a computer as Admin, erase the partition and set the file system to Mac OS Extended (Journaled), it mounts the drive and I can write files to the drive. However as soon as it reboots, it goes back to Mac OS Extended and the drive is read-only.

Any ideas? It's kind of hard to search for help with Mac OS Extended right now without being bombarded with APFS posts.

diskutil list shows:

/dev/disk0 (internal, physical):    
   #:                       TYPE NAME                    SIZE       IDENTIFIER    
   0:      GUID_partition_scheme                        *1.0 TB     disk0    
   1:                        EFI EFI                     209.7 MB   disk0s1    
   2:                  Apple_HFS Macintosh HD            990.0 GB   disk0s2    
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3    
   4:                  Apple_HFS Examplify_backup        9.2 GB     disk0s4

diskutil info disk0s4 shows (among other things) either:

Name (User Visible):      Mac OS Extended

or

Name (User Visible):      Mac OS Extended (Journaled)
Journal:                  Journal size 8192 KB at offset 0x47000
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    Can you run diskutil list and add the output to your post? – JMY1000 Feb 13 '18 at 21:40
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    diskutil list posts the following: /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 990.0 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3 4: Apple_HFS Examplify_backup 9.2 GB disk0s4 – it7276 Feb 14 '18 at 13:50
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    Results of diskutil list are the same regardless of whether it's Mac OS Extended or Mac OS Extended (Journaled), but if i do diskutil info disk0s4 and it's not Journaled I get (among other things): Name (User Visible): Mac OS Extended When it IS Journaled, it shows: Name (User Visible): Mac OS Extended (Journaled) Journal: Journal size 8192 KB at offset 0x47000 – it7276 Feb 14 '18 at 13:54

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