Can't open more than 1 drwg at a time

[rvthor]

I had a glitch in my computer. Now that I am back up, my Autocad Mechanical 2008 wants to shut down a drawing before bringing another up. Hope this is just a setting...your help extremely appreciated

[Comach]

I had a glitch in my computer. Now that I am back up, my Autocad Mechanical 2008 wants to shut down a drawing before bringing another up. Hope this is just a setting...your help extremely appreciated

Type SDi on the command line and set the value to '0'.