I am (Computer Engineer) 22 years in business. Know well what I am doing. What This morning with Acronis 9.0 T. I. Entp. Ed. Had 4 HDD on system. Plugged 5th into USB. System recognized as well as should. Acronis to... Selected Disc copy tab. under Windows Sourcce HDD2 PSize: 160GB (60GB is ued) - Target USB HDD Psize: 120GB (Empty). Selected manual mode. Relayout target partition size (while data is only 60GB) to 80GB. Sofar all goes well... Until Acronis popups with an message "Reboot is required" Sureno problem, I click to "reboot". System rebooted. Before Windows started, under MSDOS mode Uncle Acronis started the copy job as - READ HERE CAREFUL! NOW THE FILM STARTS FIRST! : Acronis resized my all importants HDD which does not beelong to the scenario... and started to copy all data from source disk! My USB target disk was still empty (Which should be overwritten with source data) My 4th disk is completly gone ! Because Aronis recognized USB HDD under Windows well but after rebooting Acronis started to format NOT THE USB HDD - MY OTHER HDD WHICH IS A REAL ENGINEERING DISASTER! 1) IT'S SHOULD AT LEAST WARN ME AND ASK ME WITH AN FINAL CONFIRMATION (NEVER MADE ON FORMAT UNDER MS DOS) 2) SYSTEM HAD 5 DISK. ON THE TEMPORALY BATCH FOR PROCESS IT SHOULD POINTED TO 5TH DISK! WHY IT HAS STARTED TO FORMAT 4TH DISK? THIS IS A SECONDARY ENGINEERING DISASTER 3) I COULD NOT BELEIVE. THAT'S WHY I REPLAY SAME SCENARIO WITH OTHER 5 DISK TO MAKE SURE THAT IS FROM ACRONIS SITE. YES THIS IS NOT U BUG! THIS IS ABSOLUTLY A ENGINEERING DISASTER! AND SHOULD BE FIXED AS URGENT! OR USB HDD FUTURE SHOULD NOT BE OFFERED! I DO NOT HAVE A COPY OF DELETED HDD. A COMPLETTE DELETED PARTITION SER,ARCH WILL TAKE ALLMOST ONE WEEK WITH ACRONIS DISK DIR. SO BE AWARE TO COPY DISK TO ANY USB IF REBOOT IS REQUIRED DO NOT AGREE! YOU WILL LOSE ALL YOUR DATA ON LAST DISK (BECAUSE ACRONIS THING THAT IS THE TARGET USB DISK!