link
Cortesia do how-to-geek:
Resize a Partition for Free in Windows
7 or Vista
Windows 7 and Vista include a built-in
functionality in Disk Management to
shrink and expand partitions. No more
3rd party utilities needed!
To get to this utility, open up
Control Panel, and type in partition
into the search box.. you’ll
immediately see the link show up:
Shrink a Partition
In the Disk Management screen, just
right-click on the partition that you
want to shrink, and select “Shrink
Volume” from the menu.
In the Shrink dialog, you will want to
enter the amount you want to shrink
by, not the new size. For example, if
you want to shrink your 50gb partition
by roughly 10gb so that it will now be
roughly 40gb, enter 10000 into the
box:
Extend a Partition
In the Disk Management screen, just
right-click on the partition that you
want to shrink, and select “Extend
Volume” from the menu.
On this screen, you can specify the
amount that you want to increase the
partition by. In this case, I’m going
to extend it back to the roughly 50GB
size that it was before.
Note that the extend partition feature
only works with contiguous space.
Isso ajuda?