Ok, I've been testing the 500 GB FreeAgent Go (named "Big MBP Backup") on FW 800 the last few days. The "-1" problem came back last night, when SD failed to quit on me when I selected the "Shut down when complete" option.
The problem seems to occur every time SD fails to quit before shutdown.
The process I use for backup every night is:
1. Disable Real-Time Intego Virus Scanner (Virusbarrier X5 10.5.10).
2. Plug in FW 800 Seagate FreeAgent Go.
3. Start up SD.
4. Initiate Smart Update with "Shutdown when complete" option.
Its been going fine for the last days. But for some strange reason, it gets this "-1" hiccup now and then and SD fails to quit on shutdown, despite the fact that the backup completes successfully - All the status indicators are in the green.
I've deleted the "-1" folder in /Volumes.
I've also sent the logfile to you with Summary title: "Failure to Quit SD upon Shutdown; /Volume gets "-1" Appended".
I'm going to try the following: I will use another drive with FW tonight ("Small MBP Backup") and use that for the next few days, with the same procedure as above.
If there is no issue, then I know the problem is with the FW 800 FreeAgent Go.
If not, then there is either (a.) A FW problem with the controller on my MBP, or (b.) Some software issue in the OS or Virusbarrier X5.
Any advice you can give me after perusing the logfile will be appreciated.