We have a Windows 2003 Server with Disk 0 with a total of 546Gb (Basic Disk). We have the C: drive showing 97Gb and the E: drive showing 314Gb, both in blue in the Windows Disk Management tool, and we have 136Gb unallocated in black. I want to add all of that 136Gb of space to the E: drive so that the E: drive has an increased total of 448Gb. This is a production server, so we have users currently using it, but my plan was to convert the basic disk to dynamic, but then would I be able to just right click that unpartitioned space and add it to E:? I'm looking at third party tools to see if they offer any way to this without losing any of the existing data. Thanks in advance!