Hi, Doug.
Disk Management will not "split" a partition (commonly called a "drive", but
actually only a portion of the physical hard disk drive - and now often
referred to as a "volume").
But it will Shrink a volume. Unless there is an unmovable file way out near
the end of the volume, this will make your Drive C: smaller, leaving "free
space" or "unallocated space" following the shrunken volume. Then you can
create a new partition in that free space.
If your first attempt to Shrink Drive C: doesn't work, or doesn't give you
enough free space, defrag the drive and try again. Sometimes the defragger
can move far-flung files or segments closer to the front of the partition,
freeing up space at the end. If there are unmovable files out there, you
may need a more sophisticated defrag. See if Shrink volume will offer you
enough space; if not, post back with some details and we probably can guide
you.
Just remember that Disk Management's wizards usually work in MB, not GB. So
if you want to shrink the volume by 30 GB, type in 30,000, not 30. (Yes,
that's the voice of experience.)
RC
--
R. C. White, CPA
San Marcos, TX
(e-mail address removed)
Microsoft Windows MVP
Windows Live Mail 2009 (14.0.8064.0206) in Win7 Ultimate x64 RC 7100