Take a look at FDISK (a DOS command).
http://www.computerhope.com/fdiskhlp.htm
"rogert" <> wrote in message
news:33104A84-49AA-4FA8-BE43-...
>I tried to partition my hard drive using Vista and followed all the
> instructions. Upon completion, the message "insufficient disk space to
> complete this operation" appeared, yet I was trying to partition 40GB from
> 120GB.
> Now, this 40Gb is declared as "unallocated space and I have no access to
> it.
> Any suggestions please as to how to restore the hard drive and grab back
> my
> 40GB or additional instruction as to how to access the unallocated 40GB
>
> Mant Thanks
>
> Roger