As Hank and Ken said, you probably need to shrink your existing partition
and create a new partition in its place. You MAY need 3rd-party software,
as they suggested, but it depends on your existing disk system.
Are you familiar with Disk Management? It has been a part of every version
of Windows since Windows 2000 and gets more features with each successive
version. There are several ways to run DM; my favorite is just to click
Start, type in "diskmgmt.msc" and press Enter. You'll need Administrator
credentials, of course, since this utility allows you to make some serious
changes to your hard disk system - and to USB flash drives, optical drives
and just about anything else that can be assigned a "drive" letter.
Maximize the window so that you're no working through a keyhole. By
default, the top of the screen shows the Volume List; the bottom shows the
In the Graphical View, right-click in your Drive C: and see if it offers to
Shrink Volume. If it does, try to shrink it by at least 20,000 MB. (That's
~20 GB, of course, but DM deals only in MB and if you ask for 20, you won't
like the results.) That should leave you with 20 GB of Free Space,
sometimes called Unallocated Space. Right-click in this Free Space and
choose New simple volume, then format it (NTFS, of course) and assign it any
available drive letter.
If Shrink Volume is not available, or can't shrink by as many MB as you
need, there probably is an unmovable file near the far end of that volume.
In that case, then, yes, you will likely need 3rd-party help.
Or, as Hank and Ken suggested, it may be cheaper to buy a new 500 GB HDD
than to buy the software to manage your existing disk space. ;<)
(I see Tom just posted what I said - but I've already got it typed, so here
it is. Enjoy!)
R. C. White, CPA
San Marcos, TX
Microsoft Windows MVP
Windows Live Mail 2009 (14.0.8089.0726) in Win7 Ultimate x64
"Lee" <email@example.com> wrote in message
> Question: How do you create a disk partition in Vista Home premium if the
> disk is not dynamic? I would like to install a trial version of Windows 7
> to see if business apps will run.... and would much prefer to keep all of
> that on a seperate partition with option to boot either Win7 or Vista...
> articles or professional advice on pros and cons desired...