Report Retrospect 5.0.238 & Mac OS 9.2.2 Firewire Drives? in Device and Hardware Compatibility Pre OS X Posted February 19, 2009 Yeah, I've got OS 9 and a PC on my desk, OS 9, X, and Vista at home. Too many changes would have to be made to upgrade from OS 9 here to be truly practical. I don't have USB 2.0 here, interested in the Firewire side for transfers. Thanks for the reply. It does work fine, even to a thumb drive. Where I was getting confused was to not save the backup set to the Backup Sets folder in Retrospect Folder (default), rather save the backup set file on the volume/drive I wanted to use as the backup destination. Now it all comes clear... Gonna grab a couple of Firewire drives to rotate weekly backups.