--- ipp_rb/ipodio-posix.c	2006-12-13 13:11:22.000000000 +0000
+++ ipodpatcher/ipodio-posix.c	2006-12-13 16:04:32.000000000 +0000
@@ -24,6 +24,8 @@
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
 
 #include "ipodio.h"
 
@@ -40,9 +42,23 @@
         return -1;
     }
 
-    /* TODO: Detect sector size */
-    *sector_size = 512;
-
+    /* TODO: Detect sector size for OSes other than linux */
+#if defined(linux) || defined(__linux)
+	if(ioctl(*dh,BLKSSZGET,sector_size) < 0) {
+		fprintf(stderr,"[ERR] ioctl() call to get sector size failed\n)");
+	}
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) \
+	 || defined(__bsdi__) || defined(__DragonFly__)
+	if(ioctl(*dh,DIOCGSECTORSIZE,sector_size) < 0) {
+		fprintf(stderr,"[ERR] ioctl() call to get sector size failed\n)");
+	}
+#elif defined(__APPLE__&__MACH__)
+	if(ioctl(*dh,DKIOCGETBLOCKSIZE,sector_size) < 0{
+		fprintf(stderr,"[ERR] ioctl() call to get sector size failed\n)");
+	}
+#else
+	*sector_size=512;
+#endif
     return 0;
 }