How to add enough free space to my C drive?

[Penguin458]

Recently, I have tried to add some free space to my C drive by right clicking this C drive to highlight "Extend" option. However, this option is unexpectedly grayed out and unworkable. But, There is only 209MB free space left. So, do you know how I can add enough free space to my drive? Help me, please!

 

[house70]

You can't just extend free space on a drive that has only a certain amount left. It doesn't come from free air, it has to be created by removing/compressing other files on that drive. The only way to create free space otherwise would be by resizing partitions already present on that drive.
Do a disk cleanup and pick all the options that may work out for you from that process.

 

[hubbardt]

Download and run this utility to see what is eating up all your disk space
http://en.wikipedia.org/wiki/SpaceSniffer

It shows all your folders as colored squares. The bigger the square the bigger size the folder is.
Don't forget to right click the EXE and select Run As Administrator (if you are on windows 7)

 

[kenrivers]

Some things you might consider doing are:
1) Run disk cleanup
2) Use something like CCleaner to wipe the drive's free space (there is an option to Wipe MFT free space) and wipe temporary Internet files
3) Delete old restore points
4) Turn off Hibernation

 

[popatim]

run diskmgmt.msc and post the picture here so we can see what we are dealing with please.