0 or 1 track

vbimport

#1

Here are 2 results of DVD Identifier + Alcohol 120% analysis of 2 VERBATIM DVD +R which are supposed to be blank :

First one without a little circle near the center
1 session 0 track
blank disk

Unique Disc Identifier : [DVD+R:YUDEN000-T01-000]

Disc & Book Type : [DVD+R] - [Not Available]
Manufacturer Name : [Taiyo Yuden Co. Ltd.]
Manufacturer ID : [YUDEN000]
Media Type ID : [T01]
Product Revision : [Not Specified]
Blank Disc Capacity : [2,295,104 Sectors = 4,482.6MB = 4.38GB (4.70GB)]
Recording Speeds : [1x , 2.4x , 4x]

[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]

Second one with a circle near the center (should be first track)
1 session, 1 track of 577 sectors

As you can see it is Production revision 001

Unique Disc Identifier : [DVD+R:YUDEN000-T01-001]

Disc & Book Type : [DVD+R] - [Not Available]
Manufacturer Name : [Taiyo Yuden Co. Ltd.]
Manufacturer ID : [YUDEN000]
Media Type ID : [T01]
Product Revision : [001]
Blank Disc Capacity : [2,295,104 Sectors = 4,482.6MB = 4.38GB (4.70GB)]
Recording Speeds : [1x , 2.4x , 4x]

[ DVD Identifier - http://DVD.Identifier.CDfreaks.com ]

So finally, why there is one media which contains a first track (very small) and in the other one not.

Can it explains that I have some trouble to read the first one from my DVD burner PLEXTOR 708A although it has been burnt without any problem by this dvd writer.

I have 3 media (from same serie as first one) not readable in my PLEXTOR but in my DVD player or DVD reader PIONEER (strange !!!)
I haven’t checked second media yet .

Thanks

Olivier