Failed to enable ownership on Macintosh HD
 

My apologies if this has been covered, I did search but the only threads are about target disks and this appears to be my built-in hard disk.

I have a late 2015, 21.5 inch retina Mac:

Model Name: iMac
Model Identifier: iMac16,2
Processor Name: Intel Core i7
Processor Speed: 3.3 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 16 GB
Boot ROM Version: IM162.0206.B00
SMC Version (system): 2.32f20

Below is the log from today's attempted backup:

| 10:25:31 AM | Info | Target Volume: Clone, mount: /Volumes/Clone, device: /dev/disk4s2, media: WD Ext HDD 1021, interconnect: External USB, file system: "Journaled HFS+", OS: 10.11.5 (15F34), capacity: 2000.05 GB, used: 305.91 GB, directories: 154459, files: 696780, ejectable: YES, ACLs: Enabled
| 10:25:31 AM | Info | Copy Mode : Smart Update
| 10:25:31 AM | Info | Copy Script : Backup - all files.dset
| 10:25:31 AM | Info | Transcript : BuildTranscript.plist
| 10:25:31 AM | Info | PHASE: 1. Prepare to Copy Files
| 10:25:31 AM | Info | ...ACTION: Preparing Macintosh HD
| 10:25:31 AM | Info | ......COMMAND => Verifying the integrity of volinfo.database
| 10:25:31 AM | Error | bash: -c: line 2: syntax error: unexpected end of file

Any help would be greatly appreciated.

Peter:)

Hi, Peter. Please see http://www.shirt-pocket.com/blog for a discussion of this issue (and some other El Capitan caveats) in the post "The Traditional Post-Release Debrief". At the bottom of that first post, you'll find a link to a downloadable fix that you can install that will resolve the problem.