[PATCH 2/2] mountmgr.sys: Do not add drive letters or volumes for macOS volumes without mount paths.

[Tim Clem]

From: Tim Clem

Mounted volumes that are not represented in the filesystem are system
volumes that we should ignore (e.g. recovery and preboot).
---
 dlls/mountmgr.sys/diskarb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/mountmgr.sys/diskarb.c b/dlls/mountmgr.sys/diskarb.c
index e744e87dcf0..e9ece5af2a0 100644
--- a/dlls/mountmgr.sys/diskarb.c
+++ b/dlls/mountmgr.sys/diskarb.c
@@ -91,7 +91,10 @@ static void appeared_callback( DADiskRef disk, void *context )
     if ((volume_url = CFDictionaryGetValue( dict, CFSTR("DAVolumePath") )))
         CFURLGetFileSystemRepresentation( volume_url, true, (UInt8 *)mount_point, sizeof(mount_point) );
     else
-        mount_point[0] = 0;
+    {
+        TRACE( "ignoring volume %s, uuid %s: no macOS volume path\n", device, wine_dbgstr_guid(guid_ptr) );
+        goto done;
+    }

if (CFURLCopyResourcePropertyForKey(volume_url, kCFURLVolumeIsBrowsableKey, &ref, NULL))
     {