The data summary that I posted was from the ISO burned copy. And yes, the bootable nature of the disc in on the first session. Here's a summary of the original disc from the ImgBurn software. Checksums are the same, btw, of the original disc and the disc that was created from the ISO image, just not bootable.
HL-DT-ST DVD+-RW GS40N A100 (SATA) Current Profile: DVD+R DL Disc Information: Status: Complete State of Last Session: Complete Erasable: No Sessions: 2 Sectors: 3,417,632 Size: 6,999,310,336 bytes Time: 759:30:32 (MM:SS:FF) MID: MKM-001-00 Supported Read Speeds: 2.4x, 4x, 6x, 8x Current Read Speed: 3.3x - 8x, 8x - 3.3x File System Information: Sectors: 3,450,550 Size: 7,066,726,400 bytes Time: 766:49:25 (MM:SS:FF) TOC Information: Session 1... (LBA: 0) -> Track 01 (Mode 1, LBA: 0 - 34975) Session 2... (LBA: 34976) -> Track 02 (Mode 1, LBA: 34976 - 3417631) -> LeadOut (LBA: 3417632) Track Information: Session 1... -> Track 01 (LTSA: 0, LTS: 32928, LRA: 0) Session 2... -> Track 02 (LTSA: 34976, LTS: 3382656, LRA: 0) Disc Control Blocks Information: MATSHITA 852 Physical Format Information (ADIP - L0): Disc ID: MKM-001-00 Book Type: DVD+R DL Part Version: 1 Disc Size: 120 mm 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 (ADIP - L1): Disc ID: MKM-001-00 Book Type: DVD+R DL Part Version: 1 Disc Size: 120 mm 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 - L0): Disc ID: MKM-001-00 Book Type: DVD+R DL Part Version: 1 Disc Size: 120 mm 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 - L1): Disc ID: MKM-001-00 Book Type: DVD+R DL Part Version: 1 Disc Size: 120 mm 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 Layer Information: Layer 0 Sectors: 2,086,912 (61.06%) Layer 1 Sectors: 1,330,720 (38.94%)