--- driverkit/libDriver/ppc/IOTreeDevice.m	2018/04/24 17:37:51	1.1
+++ driverkit/libDriver/ppc/IOTreeDevice.m	2018/04/24 17:39:57	1.1.1.2
@@ -485,6 +485,9 @@ NVRAMDescriptor	nvDescrip;
     nvpc = NVRAM_NameRegistry_Offset;
     READINC( sizeof( short), &nvEnd );
 
+    if( IsYosemite())
+	nvEnd += NVRAM_NameRegistry_Offset - 0x100;
+
     if( (nvEnd < NVRAM_NameRegistry_Offset) || (nvEnd >= (NVRAM_NameRegistry_Offset + 0x400)))
 	nvEnd = NVRAM_NameRegistry_Offset + 2;
     *theEnd = nvEnd;
@@ -562,6 +565,8 @@ NVRAMDescriptor	nvDescrip;
 	    err = nrNotEnoughMemoryErr;
 	else {
 	    WriteNVRAM( nvpc, sizeof( NVRAMProperty), (UInt8 *) &nvram );
+            if( IsYosemite())
+                nvEnd -= NVRAM_NameRegistry_Offset - 0x100;
 	    WriteNVRAM( NVRAM_NameRegistry_Offset, 2, (UInt8 *) &nvEnd );
 	}