It is MY HUMBLE OPINION, Acronis support may tell if i'm right or wrong... When generating a Full BootCD or disks set, TI writes a tiny Linux environnement with USB/Firewire/PCCARD support (needed for external storage). During the Linux boot process, the Acronis Loader is checking for ACPI signals, wich fails on my notebook whereas it causes no trouble on my desktop. Actually, it depends on your motherboard/BIOS combo... Generating a safe version CD simply forgets external storage support, therefore it does not write/load the special Linux tiny distrib. So Acronis should give the choice of generating a CD with external storage support (Full version) or not (Safe version) and ADD an option to select ACPI support or disabling. That should not be hard to solve, as it only needs some modification in bootwiz.cfg, cdboot.cfg and f11.cfg ie: replacement of "kernel.dat quiet" by "kernel.dat acpi=off quiet" parameters. The three cfg files are zip-embedded at the end of Mediabuilder.exe file so it should not be hard to patch it.