My secondary hard drive keeps disappearing. I have to re-boot to get it back.. I have turned off hypernation or sleep but it still keeps happening. Only have had this problem since upgrading to Windows 7

Hello, How often does this issue occures? Please kindly run "Mountvol /E" command line in the problematic computer and then monitor if the issue still exists.Thanks and Regards Scorpio_Milo MCTS: Windows Vista | Exchange Server 2007 MCITP: Enterprise Support Technician MCITP: Server & Enterprise Administrator Microsoft Infrastructure Consultant Enterprise Service: Solution Architect Microsoft Storage Team - File Cabinet Blog My Blog Contact me

Win7 by default will hide inactive drives unfortunately I forget what I did to stop it. You can try changing your power options in control panel from the default balanced to the high performance profile or change the plan settings and select the hard drive option within plan setting and set turn drive off to "never" this has to be typed into the box that shows the minutes until the drive turns off.