From 33e39ff72151c708bf306bbfa1e16d0f9b92a3d6 Mon Sep 17 00:00:00 2001
From: Natalia Portillo <claunia@claunia.com>
Date: Mon, 6 Sep 2021 05:02:40 +0100
Subject: [PATCH] Do not write index 0 for first session tracks in CDRWin disc
 images. Fixes #656

---
 Aaru.Images/CDRWin/Write.cs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Aaru.Images/CDRWin/Write.cs b/Aaru.Images/CDRWin/Write.cs
index 7747ef2e3..b5fe58db2 100644
--- a/Aaru.Images/CDRWin/Write.cs
+++ b/Aaru.Images/CDRWin/Write.cs
@@ -556,10 +556,13 @@ namespace Aaru.DiscImages
 
                 if(track.TrackPregap > 0 && _isCd)
                 {
-                    _descriptorStream.WriteLine("    INDEX {0:D2} {1:D2}:{2:D2}:{3:D2}", 0, msf.minute, msf.second,
-                                                msf.frame);
+                    if(track.TrackSequence > _writingTracks.Where(t => t.TrackSession == track.TrackSession).
+                                                            Min(t => t.TrackSequence))
+                        _descriptorStream.WriteLine("    INDEX {0:D2} {1:D2}:{2:D2}:{3:D2}", 0, msf.minute, msf.second,
+                                                    msf.frame);
 
-                    msf = LbaToMsf(track.TrackStartSector + track.TrackPregap);
+                    if(track.TrackSequence > 1)
+                        msf = LbaToMsf(track.TrackStartSector + track.TrackPregap);
 
                     _descriptorStream.WriteLine("    INDEX {0:D2} {1:D2}:{2:D2}:{3:D2}", 1, msf.minute, msf.second,
                                                 msf.frame);