changing a raid

[pharoah]

when i reloaded my machine last time i selected jbod before i really knew what it did lol < (i know not to smart) now what ive read on it if ya loose a drive the other is still ok no data loss my question is could this be changed to a raid 1 or 0 without reloading the machine or no data loss

 

[pharoah]

hey thanks for the input now i know