1 files changed, 1 insertions, 0 deletions
diff --git a/src/drive.h b/src/drive.h
index bec704e..f0df9f1 100644
--- a/src/drive.h
+++ b/src/drive.h
@@ -27,6 +27,7 @@
 #include "usuals.h"
 
 const uint16 kSectorSize = 0x200;
+const uint64 kInvalidSector = 0xFFFFFFFFFFFFFFFF;
 struct DriveLock;
 
 struct PartitionInfo