System Volume Information 是 Windows 还原 系统 功能 所 存放 资料 的 目录，Generally turn off System Restore，This catalog will not occupy how much space disks，However, if some of the factors leading to this directory occupy a large space，Will have to pass through some of the techniques to clear this directory。
Method one
1.Choose the contents of this directory, right-click，In the "Security" tab，If you have permission to modify，A book of individual self-doors multiply 請新，And permission to open "Edit" in。
2.After you press OK，To enter the System Volume Information delete useless files。
Method Two
1.If the "Security" tab is grayed out and can not be modified，Then switch to the "Sharing" tab，Select "Share this folder"，Press OK。
2.And then to choose the contents of this directory, right-click，"Read only" hook canceled，Press OK。At this point may encounter a warning about，You can skip。
3.Then you can enter the System Volume Information delete useless files。
[Links]
- 请问 如何 快速 删除 System Volume Information – The PCDVD Digital Discussions
