From 52fab988e3997208b2d0ce96d3c657f6cfee337c Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Wed, 1 May 2019 18:30:34 -0700
Subject: [PATCH] DISK: Handle Windows RAW disk reads at EOF as success reading
 0's

This was the root cause of the problem reported in #696
---
 sim_disk.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sim_disk.c b/sim_disk.c
index 131f0047..069e218b 100644
--- a/sim_disk.c
+++ b/sim_disk.c
@@ -2583,6 +2583,12 @@ if (ReadFile ((HANDLE)(uptr->fileref), buf, sects * ctx->sector_size, (LPDWORD)s
         *sectsread /= ctx->sector_size;
     return SCPE_OK;
     }
+if (ERROR_HANDLE_EOF == GetLastError ()) {  /* Return 0's for reads past EOF */
+    memset (buf, 0, sects * ctx->sector_size);
+    if (sectsread)
+        *sectsread = sects;
+    return SCPE_OK;
+    }
 _set_errno_from_status (GetLastError ());
 return SCPE_IOERR;
 }