Partition problem

I am using windows 7 and wants to create a new partition using a software partition manager but when I go for create a new partition showing a error Operation Failed .. Need Administrator Privilege to create a new partition.
but i am using windows as admin …
what can I do for it please help me I have only one partition in my hard drive.
Thank You!
Sorry for my bad English!
Answer #1
using a software partition manager
which one ?
is there free space for a new partition on the drive ?
post a screen shot of to drive open in the partition manager
Answer #2
I am using this software “Paragon Hard Disk Manager™ 11 Server” also try Partition Magic 8 but its not compatible and I have 1 partition right now where windows is installed.
Have lot of space almost 70GB ….
here is some screen shots


Answer #3
it file system, you need format to NTFS
open your cmd
copy this
convert C: /FS:NTFS
Answer #4
you have no unpartitioned free space
that’s free space on C
you need to shrink C to create a new partition
you need format to NTFS
your partition shows as “invalid” in Paragon
what’s windows disk mgt say ?
Answer #5
I have NTFS formate right now!
I have no idea about windows disk mgt … how can I make partition space from C drive ?
I just install windows yesterday so I don’t want to install it again please help!
Answer #6
hit “CTRL+R” and enter
diskmgmt.msc
post a screen shot of that
you need to resize (shrink) C to create a 2nd partition
that invalid might cause problems
in Paragon RT the c drive and select “resize”, and shrink to what you want C to be