> let the controller refresh the charge Thanks, I didn't know that When you say "refresh the charge" do you mean just power it up or actually re-write all the data ? That would be a pain and more hassle than copying a DVD every few years Joe ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2015.0.5646 / Virus Database: 4284/9133 - Release Date: 02/17/15 --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .