Actually it seems it does recognize it now... it reads
PHILIPS DVD+-RW SDVD8820 AX03 (ATA)
Current Profile: DVD+R
Disc Information:
Status: Empty
Erasable: No
Free Sectors: 16,384,000
Free Space: 33,554,432,000 bytes
Free Time: 3640:55:25 (MM:SS:FF)
Supported Write Speeds: 2.4x
Physical Format Information (ADIP):
Disc ID: MKM-001-00
Book Type: DVD+R DL
Part Version: 1
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 2
Track Path: Opposite Track Path (OTP)
Linear Density: 0.293 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 16,580,607
Last Physical Sector in Layer 0: 2,283,519
Physical Format Information (Last Recorded):
Disc ID: MKM-001-00
Book Type: DVD+R DL
Part Version: 1
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 2
Track Path: Opposite Track Path (OTP)
Linear Density: 0.293 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 16,580,607
Last Physical Sector in Layer 0: 2,283,519
Does this seem to be the right info?
BTW You are right every time it does burn the disk has :
Destination Media Sectors: 4,173,824
and when it fails it reads:
Destination Media Sectors: 16,384,000