Hello, THE TITLE IS MY QUESTION...DRIVE HAD VISTA ON IT FOR YRS BOOTED WIN 7 CD AND CHOOSE TO DELETE PARTITIONS..I LET IT CREATE THE BACK UP PARTITIONS WITH 12GBG A 100mb AND THEN THE NISTALLATION PORTION..I INSTALLED..AFTER A REBOOT..DRIVE NEVER DETECTED AGAIN...WHEN ITS PLUGGED IN IOT FREEZES MY BOOT UP..CANT ACCCESS BIOS WHEN DRIVE PLUGGED IN..UNPLUG SERIAL CABLE..ALL IS WELL.