diff --git a/src/raspberrypi/os_integration/rascsi.service b/src/raspberrypi/os_integration/rascsi.service
index 4a36e0c7..ac03ff4a 100644
--- a/src/raspberrypi/os_integration/rascsi.service
+++ b/src/raspberrypi/os_integration/rascsi.service
@@ -6,9 +6,15 @@ After=network.target
 Type=simple
 Restart=always
 ExecStart=/usr/local/bin/rascsi -r 7
-# Example: If you want to automatically attach a hard disk at startup, change
-# the ExecStart line to:
-# ExecStart=/usr/local/bin/rascsi -ID1 /home/pi/images/harddisk.hda
+# Example 1: If you want to automatically attach a hard disk at startup, 
+# say an image called harddisk.hds on SCSI ID 1, change the ExecStart line to:
+# ExecStart=/usr/local/bin/rascsi -i 1 /home/pi/images/harddisk.hds
+#
+# Example 2: If you want to reserve SCSI IDs to prevent usage, add '-r' followed by
+# comma-separated SCSI ID numbers; for instance IDs 0 and 7:
+#
+# ExecStart=/usr/local/bin/rascsi -r 0,7
+#
 # This functionality isn't implmented yet: ExecStop=/usr/local/bin/rasctl -stop
 StandardOutput=syslog
 StandardError=syslog