I tried erasing the disc through the IMG menu, but I got an error message and the "OH NO" audible message. Yikes. Here is the data in the IMG Burn screen:
HL-DT-ST RW/DVD GCC-4481B 1.00 (ATA)
Current Profile: DVD-ROM
Disc Information:
Status: Complete
Erasable: No
Sessions: 1
Sectors: 2,295,104
Size: 4,700,372,992 bytes
Time: 510:03:29 (MM:SS:FF)
Physical Format Information (Last Recorded):
Disc ID: RICOHJPN-W11-01
Book Type: DVD+RW
Part Version: 2
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 1
Track Path: Parallel Track Path (PTP)
Linear Density: 0.267 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 2,491,711
Last Physical Sector in Layer 0: 0
Current Format Capacity:
Sectors: 2,295,104
Size: 4,700,372,992 bytes
Time: 510:03:29 (MM:SS:FF)
Maximum Format Capacity:
Sectors: 2,295,104
Size: 4,700,372,992 bytes
Time: 510:03:29 (MM:SS:FF)