[tamlin] 13339: Help freeloader stop crashing from divide-by-zero, provoked by drain-bamaged BIOS.

Help freeloader stop crashing from divide-by-zero, provoked by
drain-bamaged BIOS.
Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c
  _____  

Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c
2005-01-27 15:28:08 UTC (rev 13338)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/pcdisk.c
2005-01-27 21:12:05 UTC (rev 13339)
@@ -146,7 +146,9 @@

 	//
 	// Get the drive geometry
 	//
-	if (!MachDiskGetDriveGeometry(DriveNumber, &DriveGeometry))
+	if (!MachDiskGetDriveGeometry(DriveNumber, &DriveGeometry) ||
+	    DriveGeometry.Sectors == 0 ||
+	    DriveGeometry.Heads == 0)
 	{
 		return FALSE;
 	}