Schrodinger's Data CD

Downstairs in my studio is a data CD that either completely finished being written and verified or was interrupted in the middle by some error message. I have an ancient (c. 1997) computer that has a stand-alone CD burner on a SCSI chain. I have many, many gigabytes of recording session and audio data I am making a real effort to back up all of. I try reinstalling Toast, the program I use to burn data CDs. I try updating the firmware of the burner. I pore over the extensions set I use when creating data CDs to make sure nothing is competing with the CD burner. (Sometimes the burner has caused the whole thing to freeze if I leave the native Mac CD-ROM drive extension on.) Are you as bored of all this technobabble as I am?

Anyway, the point is that downstairs is the result of today's naptime efforts at the mundane gruntwork of musical endeavor. Sadly, it will determine my mood for the evening to some extent. It will determine how affectionate and playful I have the energy and patience to be with the kids when they get up from their naps. Shall I go check it? Yes, I shall. How could I leave you all hanging?

The drive reported an error:
Sense Key = HARDWARE ERROR
Sense Code = 0x09, 0x02
FOCUS SERVO FAILURE

But it was "finishing" when it reported this error, so it's possible the disc will work. I restarted the computer after changing my extensions so I can put the disc in question in the native Mac CD-ROM drive (which doesn't have a burning capability, btw) and check it with Norton Utilities Disk Doctor. (It's starting up and I'm also helping toddler go potty, so I had a moment to type here. Hang on.)

Disc lead out failed to be written, so the computer freezes when it gets the CD all up in its drive. It tries and fails to read it and can not do anything until I press the manual eject button. Perhaps unwisely, I am going to try inserting it into this rather more modern computer I'm using right this second. I'll post this first and log off the internet just in case. Stay tuned if you care.