www.makemkv.com

Never seen this before, don't know what it means.
A really old DVD of "The Matrix"
makemkv only retrieves what I think is the dvd index file
vlc and other products can read this disc w/o problem

Debug log started at Sat Mar 01 16:36:05 2025 , written by MakeMKV v1.17.9 win(x64-release)
001005:0000 MakeMKV v1.17.9 win(x64-release) started
001004:0000 Debug logging enabled, log will be saved as file://C:\Users\mwh/MakeMKV_log_1.txt
Using 262272KB for read cache.
Network access is ENABLED, CURL version 7.72.0/Schannel/1.41.0 (x86_64-pc-win32) , proxy server not set.
WinCdArb=v1.2.0_tiny win(x64-release)
No SDF v098: hp_BDDVDRW_CH20L_BC33_20091209123456_B0IE3P1194532
DEBUG: Code 0 at uz/k3ZoD[JF-EP`c<:29396253
DEBUG: Code 0 at F~av>g3BOE]Z4$,%:213136746
No SDF v098: hp_BDDVDRW_CH20L_BC33_20091209123456_B0IE3P1194532
DEBUG: Code 3 at p3dF_g|OCYM]UJKb%>GKhPFX:29395310
SDF id v098: hp_BDDVDRW_CH20L_BC33_20091209123456_B0IE3P1194532
Application exited at Sat Mar 01 16:39:05 2025

Does MakeMKV register that there's a disc in the drive?

Oh yes see attached Note that other applications see everything

What happens if you try the various different DVD Opening Modes MakeMKV has?

Auto
CellWalk
produce the results described

CellTrim
CellFull
produce results, look identical
for instance, 3 versions of the main feature, one 4 min longer with 99 chapters, the other 2 37 chapters. But appear identical in content, don't know what the time difference means

Part of the difference is the shorter versions start a few minutes into the feature
Not enough to explain entire difference