Generally, C drive is the default partition for saving data and
program which are expected to be found by the operating system while starting Windows 8
system. When your C drive disk space is insufficient, the Windows 8 system can not work
as normal. Meanwhile, the update, program installations and defragment of windows 8 can
not continue. So, extending C drive of Windows 8 is absolutely necessary for the sake of
the maximization of windows 8 performance and making full use of disk space.
Although Windows 8 built-in Disk Management offers the function of "Extend Volume",
it still has some shortcomings. For example, if you want to extend C drive, you have
to delete the partition that behind C. Therefore, free partition manager- AOMEI Partition Assistant Standard
Edition is the best assistant helps you extend C drive without damaging any
data or deleting partition.
Tip: Free download the full version
of AOMEI Partition Assistant Standard (File Size: 7.65 MB)
Step1: Launch AOMEI Partition Assistant Standard Edition.

Step2: Right-lick F and select "Resize Partition".

In the pop-up window, drag the slider bar rightwards as following:

Free up 13GB unallocated space from F partition.

Step3: Click "OK". Then, right click C drive and select "Resize
Partition". In the pop-up window, drag the slider bar rightwards to extend.

Step4: Click "OK". You can preview the changes in the "Pending
Operations", then click "Apply" button to commit the operations.

Except resizing partition, AOMEI Partition Assistant also offers some other
useful features, such as resize partition to extend C drive, move partition to reset the
location, merge two partitions into one, split one partition into two or more, allocate
free space from one partition to extend another, duplicate partition to migrate system
drive or data and copy disk without reinstalling Windows and applications, etc. Now free
download AOMEI Partition Assistant and try it.