Sometimes when you run out of space on a server, you want to add more disk space.
You will need to add another drive or expand the disk (virtually) where you will have free unallocated disk space.
On the windows server, there is a utility called diskpart, instructions on how to use is is below
In some circumstances you will get an error ““The volume you have selected may not be extended”
Another tool that I’ve found that can overcome this error is http://ftp.dell.com/app/ExtPart.exe
it works on Dell servers as well as Virtualised servers.
Another site with good instructions using a different method can be found at: