Just bought a 100 Spindle of -R from OfficeMax, This is what dvdinfoPro says they are…

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Media Information
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Region information N/A not a DVD-VIDEO

Media code/Manufacturer ID MCC 03RG20

Format Capacity Blank Disc

Free Blocks 411107328

Free Capacity 4.38GB/4.71GB

Book Type DVD-R

Media Type DVD-R

Manufacturer Rated Speed 16.0x 22160KBps

Available Write Descriptor CLV 16.0x 22160KBps

Available Write Descriptor CLV 12.0x 16620KBps

Available Write Descriptor CLV 8.0x 11080KBps

Available Write Descriptor CLV 6.0x 8310KBps

Write Strategy Speed 4.0x 5540KBps

2x Speed OPC beta 09

2x Speed OPC power 0B

2x Write Strategy field 1 14 87 78 90

2x Write Strategy field 2 88 80 00 00 00 00

4x Speed OPC beta 08

4x Speed OPC power 13

4x Write Strategy field 1 0D 11 0C 08

4x Write Strategy field 2 95 07 0E 0B

4x Write Strategy field 3 A0 00 20 00

4x Speed OPC beta multi-pulse 06

4x Speed OPC power multi-pulse 1A

4x Write Strategy field 4 17 86 67 85

4x Write Strategy field 5 99 AB 3A 83 20 32

4x Write Strategy field 6 00 00 D0 00 00

Data area starting sector 30000h

Linear Density 0.267um/bit

Track Density 0.74um/track

Number of Layers 1

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Complete Media Code
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00000000 00 6C 00 00 01 40 C1 FD 9E D8 52 00 02 85 0D 0E .l…@…R…

00000010 88 9A 80 00 03 4D 43 43 20 30 33 00 04 52 47 32 …MCC 03…RG2

00000020 30 20 20 00 05 88 80 00 00 00 02 00 06 09 0B 14 0 …