First, I suggest you use the built-in Windows Disk Cleanup program to clean up old system files.
The method is: Right-click the C drive - select "Properties" - select "Disk Cleanup" in the "General" tab, almost all of the options that you can check, after "OK" to delete it.
For Windows 8 / 8.1, then the system also added a feature, you can see the bottom left corner there is one called "Clean up system files" advanced cleaning options will help you clean up more system useless files, this new cleanup options very useful, it is recommended that you use it.
Here we'll show you a few other ways to effectively reduce the amount of disk C:
First, consider the system of "virtual memory" storage location removed from the C drive.
The specific method is: Open the "Computer" (this computer) - the top left of the "System Properties" - select left of the "Advanced System Settings" - select the following "performance" that item inside the "Settings" - click on the "Advanced" - the following "virtual memory" that item inside click "change"; first cancel "automatically manage paging size for all drives" and then click to select the C drive, it "system managed size" to "no paging file" tap "settings"; then a non-C drive, click on the establishment of a "system managed size", the same tap "settings" (where there is little need to explain, where you can also set up their own specific size, in the "custom size" enter to see if you need to, it is recommended to use the system management). Virtual memory usage in general will randomly set according to the size of your memory different systems, but the default is the C drive, the greater your installed system memory, virtual memory also become large in general, they will be a lot of space, but some software need virtual memory exists, so they moved to the non-system C drive is necessary.
Secondly, shut down the system to sleep.
Specific Method: Run "control characters" (the specific method is: Win key + R key to open the "Run" enter "the CMD" check "This task is created with administrator rights", and press Enter) with administrator privileges and enter "powercfg -h off", press enter. Of course, if you want to restore use the hibernate feature, enter "powercfg -h on" can be (all inputs are without the quotes). For some people sleep system is useful, but if you do not want to take up in so few GB in the system tray, close it is also very useful.
Of course, the system is hibernation file size can be adjusted, the specific instruction method is only entered in the foregoing to "powercfg -h -size XX" which is a number "XX", for example, if it is 70, these computers can C: \ hiberfil.sys memory reduced to 70%. Note, however, this value is not too small, or may cause a blue screen, blue screen if you need to give up the failure of dormancy size settings, re-set the appropriate value.
Through the above method, you can find out a lot more than the C drive space, in fact, in the future use, you will find the C drive being used more and more, but if it will clear up some of the tricks a long time to It will be within a normal range of fluctuation of.
There are other methods and precautions: do not guess you will install the software to the C drive; of course, my documents, that the file folder named after your user name, which do not put too many files; then, the "system protection" that which is deleted restore points can also get some of the system disk space, but it's not recommended to turn off system protection, you only need to use the system after a period of time is not a problem, then you can manually delete the extra restore point; there is a type of software used to clean up more than clean common system junk it, although some "junk" actually helps the system to respond quickly, but if you really C drive is not enough to delete it.
Also, you can update the system garbage generated.
The method is: after been systematically updated in the system, C: \ Windows \ SoftwareDistribution \ All Files Download in are safe to delete, C: \ Windows \ Installer \ $ PatchCache $ \ all files Managed in are safe to delete (this need to open the folder "system-protected files visible" to see, or you can simply copy the address into the address bar to access), and the rest are those Temp folder files are generally deleted, but need to segment.
Of course, the current clean-up tool 360 also introduced a method of cleaning up the garbage generated by the system update, the 360 security guards, the computer clean up - clean up garbage --Windows system junk files, in addition to conventional checked by default, and there are other similar "Windows winSxs backed cache", etc. can be checked. But here suggesting that there is an option "Windows Automatic Update database" called the bottom in Do not deleted. This thing as long as you run the update again, will return to its original size, has little significance.
There are some suggestions, when installed win8 / 8.1 system, the size of the system partition will not be too stingy, due win8 / 8.1 at present due to its APP system can only be installed to the C drive (Vision Forum vaguely remember a big success to a non-God system disk, you can search for it), it is proposed to re-install the system time to put the C drive is large enough to stay, 40GB or more personal advice, I installed win8 a notebook, C drive left 65.7GB.
About Software clean up, 360 will be able to basically meet the requirements, other, cube 5 is good, there are some of the more detailed clean-up, but need to remind you that there are times when there is excessive clean-up may not be effective, or will harm, because some files after you delete, you will find the time to update the software component is missing, this problem is most like Adobe Reader, or iTunes software such relatively large software development companies, some of their components are required for installation clean up accidental deletion; or use will continue to produce certain documents, such as thumbnail cache. Or above, there are times when those so-called junk, in fact, will increase the speed of system response and, like the browser cache, the operating system itself over a period of time will be automatically deleted. Of course, if you ran the C drive, delete them emergency does not matter.