I am using Version 11 with Vista. I have created a SZ on an external USB drive and have made my first back-up to the zone. I notice now when the PC boots up the last line of the Post screen shows "Starting Acronis Loader" (I think those are the words), and then the system boots into Vista. Now... have I booted into my regular Vista from the system on the hard-drive or have I booted into the back-up on the USB drive? When I boot the system with the USB drive turned off the last line of the Post screen says "MBR2 Error" and then it boots normally into Vista and this is what has prompted my question... which Vista am I booting into? Finally if I delete the SZ (which a number of correspondents have advised me to do) will my MBR revert to what it was before and if not how do I rectify it?