Changed sync message for clarity

src/flasher.rs

@@ -148,7 +148,7 @@ pub fn flash_iso(iso_path: &str, destination: &str) -> Result<(), io::Error> {
     // std::process::exit(0);
 
     // Log that it's going to sync data to disk
-    println!("Syncing data to disk...");
+    println!("Syncing data to disk, process will not close until this is complete.");
     Command::new("sync")
         .status()
         .expect("Failed to flush data to disk");