To add to my earlier comments: Yesterday I tried a
controlled experiment using O.N.E.S. and Windows XP, with a
good TDK DVD-R blank.
I burned three successive linked sessions to a blank DVD-R,
each containing 2 folders thus:
Session 1: Folders A and B
Session 2: Session 1 plus Folders C and D
Session 3: Session 2 plus Folders E and F
I ejected the disc after each burn and verified that the
software “saw” that the disc contained the earlier
session(s) and was appendable in "DVD Incremental - Open)
At the end of burning Session 3, before ejecting, Explorer
saw Folders A, B, C, and D. After ejecting the disc, and
thereafter, the only folder that Explorer saw was Folder A
from the very first session.
I then examined the disc with ISOBuster. It saw all 3
sessions, and in particular when I looked at Session 3, it
contained Folders A, B, C, D, E, and F. I checked that all
files were readable; ISOBuster said yes. Why, then, does
Explorer only see Folder A? Again, I didn’t have this
problem with my older Pioneer burner.