Suppling free hard disk drive repair services including hard disk data recovery, backup hard drive, format hard drive, partition hard drive and hard drive upgrade to help you solve your hard drive failure problems.

Ask: My hard drive is 300G, the actual use is 150G, but C drive shows the available disk capacity is only 10G, what is led to this, and how to deal with?

Answer: Hard Disk Capacity will not be reduced. In fact, 300G hard drive is only 279G, 300G refers to the 300 * 1000 * 1000 * 1000 bytes, Only about 279.4G. Part of the hard disk space is used for boot disk, drive backup disk and operating system recovery disk, Furthermore, windows system have many hidden files. You can follow the following actions to view:

Start My Computer, Tools — Folder Options — show the abolition of hidden system files, and select show all hidden files.

Then you will find System Volume Information folder, this file usually show 0 bytes, but when you modify the user permissions will later find that it actually consists of many things. But these things are a bit use; it can not be easily removed.
You can clear C disk, delete some junk files.

Click to run% temp%, and delete the files which can be deleted, the temporary files in IE all can be deleted.

Using Disk Defragmenter or downloading partition magic master software to check whether there is room not formatted and not used, except the hidden partition.