SD! Failure

[Nick]

I attempted to do a backup to 1 TB SD! volume on a partitioned 2-year-old WD My Book Essential USB 3.0 drive. The last time I used this particular drive was about 8 months, right around the time I got my current iMac, so I initially thought about erasing the drive first, but then thought that since there was certainly enough data on it that hadn't changed, I could save time by simply letting SD! run its Smart Update. However, after about an hour, SD! quit while in Step #2 (Copy Files) with a "failed to copy files" message. Here's part of the log:

| 07:50:27 PM | Info | SuperDuper!, 2.7.1 (91), path: /Applications/SuperDuper!.app, Mac OS 10.8.4 build 12E55 (i386)
| 07:50:27 PM | Info | Started on Mon, Sep 23, 2013 at 7:50 PM
| 07:50:27 PM | Info | Source Volume: Nick's HD, mount: /, device: /dev/disk0s2, media: APPLE HDD ST1000DM003, interconnect: Internal SATA, file system: "Journaled HFS+", OS: 10.8.4 (12E55), capacity: 999.35 GB, used: 677.45 GB, directories: 177936, files: 2233366, ejectable: NO, ACLs: Enabled
| 07:50:27 PM | Info | Target Volume: WD 1TB - SD!, mount: /Volumes/WD 1TB - SD!, device: /dev/disk1s3, media: WD My Book 1140, interconnect: External USB, file system: "Journaled HFS+", OS: 10.6.8 (10K549), capacity: 999.89 GB, used: 673.73 GB, directories: 302015, files: 2218845, ejectable: YES, ACLs: Enabled
...
...
...
| 08:02:22 PM | Info | Ignoring /private/tmp/launch-rzQoHm
| 08:02:22 PM | Info | Ignoring /private/tmp/target1959.indexState
| 08:02:22 PM | Info | /.Spotlight-V100
| 08:02:22 PM | Info | Preserving /.Spotlight-V100
| 08:03:30 PM | Info | /Library
| 08:07:44 PM | Info | /.Trashes
| 08:07:44 PM | Info | /Users
| 08:51:11 PM | Error | SDCopy: Error removing directory /Volumes/WD 1TB - SD!/Users/Nick/Library/Mail/Mailboxes/*Job Search Related
| 08:51:11 PM | Error | : Directory not empty


so it seems like things got hung up when trying to copy an old mailbox (possibly one that had been trashed?).

Diagnosis? Suggestions?

[dnanian]

This almost always means the destination drive has some corruption. Use Disk Utility's right hand "Repair disk" button to repair the drive, restart your Mac and try again.

[Nick]

Yup...that did it. Thanks, Dave!

(Sorry I didn't respond sooner, but I didn't know you had posted — for some reason, my Default Thread Subscription Mode (set for "Instant email notification") wasn't/isn't working.)