Index: trunk/i386/libsaio/sys.c
===================================================================
--- trunk/i386/libsaio/sys.c	(revision 2522)
+++ trunk/i386/libsaio/sys.c	(revision 2523)
@@ -1247,8 +1247,9 @@
 	else
 	{
 		// Fetch the volume list from the device.
-
+#if 0
 		scanBootVolumes( biosdev, NULL );
+#endif
 		bvrChain = getBVChainForBIOSDev(biosdev);
 
 		// Look for a perfect match based on device and partition number.
Index: trunk/i386/libsaio/disk.c
===================================================================
--- trunk/i386/libsaio/disk.c	(revision 2522)
+++ trunk/i386/libsaio/disk.c	(revision 2523)
@@ -1632,6 +1632,14 @@
 	config_file_t systemVersion;
 	char  dirSpec[512];
 
+	/*
+	 * Only look for OS Version on HFS+
+	 */
+	if (bvr->fs_readfile != HFSReadFile)
+	{
+		return valid;
+	}
+
 	// OS X Recovery
 	sprintf(dirSpec, "hd(%d,%d)/com.apple.recovery.boot/SystemVersion.plist", BIOS_DEV_UNIT(bvr), bvr->part_no);
 
Index: trunk/CHANGES
===================================================================
--- trunk/CHANGES	(revision 2522)
+++ trunk/CHANGES	(revision 2523)
@@ -1,3 +1,6 @@
+- Zenith432 : Change to disk.c - Prevent getOSVersion from looking for SystemVersion.plist on FAT32 or exFAT file systems - since those filesystems never serve as system volumes.
+UFS may serve as system volume, but there's no driver to read from it.
+Change to sys.c - Eliminate a dubious recursion in diskScanBootVolumes().  It recognises the filesystem, then calls getOSVersion, which attempts to open 5 files in order to find SystemVersion - then when parsing the device name - calls diskScanBootVolumes() - as a form of on-demand scanning.  This doesn't result in an infinite recursion - because the volume is already in the map.  However, this auto-scan is only useful if user enters an explicit hd(X,Y) device-spec that has never been scanned before - an unlikely occurrence.
 - Zenith432 : Patch from Issue 388, init_module_system() in modules.c dereferences NULL pointer
 - Zenith432 : Full implementation of exfat support for Chameleon's boot2 stage.
 - Micky1979 : Incorporated force umount option -u (boot1-install.c)