Advertisements When I bought my THD, I upgraded the stock HD to a 750GB WD SATA unit, as they were running about $150 at the time, and that was my budget for upgrading. Over the years, I've stored quite a few programs on the THD (many of which have the copyright flag set and thus cannot be copied off), and am starting to run out of HD space. This week, I'm about to upgrade the HDs in my ReadyNAS Duo to 2x2TB, and will have 2x1TB drives left over. I'd like to use one of the 1TB drives in the THD to give myself some extra space. Is it possibly to use the upgrade procedures listed in this forum to upgrade an already upgraded THD, and save all the programs? I'm just curious if it's possible to copy everything over and expand an already expanded volume. Many thanks in advance for your help.