Joe, also make note of John's advice: On 4/21/05, John Tolmachoff (Lists) <johnlist@xxxxxxxxxxxxxxxxxxx> wrote: > http://www.MSExchange.org/ > > 1. Never ever ever even think of touching the M drive. None of us have any > business touching it. It is a virtual drive for Exchange. > > 2. You do not want your database files on your OS partition. Bad Bad Bad. Furthermore, Joe, what is your disaster recovery plan for this server? DR is not a matter of "if"; it's a matter of "when". You should consider: 1) Increasing disk space elsewhere, rather than moving your Exchange DB's to the same drive/partition that your OS is on. 2) Setting up a new server if your biz can afford it. A question for the powers that "be" - how much is your email worth? How long can you go without it for? 3) Setting up a temporary server to move the mailboxes to, then re-configure your original server so that you have A) More space B) Exchange and the OS on different drives. ...D