I did the formatting of both the ST1 drives and the regular CF cards under OS X's Disk Utility... but it would appear to have become a bit moot now as it seems with the update to Mavericks the other day on the MacBookPro my Lexar ExpressCard CF reader is not working anymore... even with the required driver reinstalled... so I don't really have any way to read them or format them on another computer.. Oh the sound of suck can be heard from the hills to the valleys.

I've sent an email to Lexar Support regarding this, but that's about all I can do. Don't really have the funds to put forward anything for the next few weeks.