From 91875099ba88a3cdb177e9d2e14bc549d2400ce2 Mon Sep 17 00:00:00 2001
From: Gerald Schnabel <gschnabel@gmx.de>
Date: Fri, 14 Jan 2022 21:42:15 +0100
Subject: [PATCH] hdd.c: use H=1, S=32 for hdf files within valid cylinder
 range

---
 hdd.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hdd.c b/hdd.c
index 44262ed..aad41d9 100644
--- a/hdd.c
+++ b/hdd.c
@@ -684,6 +684,12 @@ void GetHardfileGeometry(hdfTYPE *pHDF)
 
       if ((head*cyl*32)==total)	// Does the geometry match the size of the underlying hard file?
         return;
+      // Is hard file size within cyllimit * 32 geometry?
+      if (total <= cyllimit * 32) {
+        pHDF->heads = 1;
+        pHDF->cylinders = (total / 32) + 1;	// Add a cylinder for the fake RDB.
+        return;
+      }
       // If not, fall back to regular hardfile geometry aproximations...
       break;
     case HDF_FILE: