Win7 system disk cleaning skills: \x0d\ Deleting restore points can reduce the space of the system disk. Delete the restore point: the operation is as follows: My computer-> Attribute-> Advanced system settings-> System protection->; Configuration->; Delete (or: Programs-Accessories-System Tools-Disk Cleaning-Select System Disk-OK-Select Junk Delete-Clean System Files-Select System Disk-OK-Other Options-Clean (2nd)) \x0d\ Why is my C disk getting less and less space? Every time I start Windows 7, I do nothing, and even uninstall some software, only to find that the space on drive C has become larger. Is it true that drive C will get smaller and smaller with WIN7 installed? What's going on here? How to solve the disk space problem of this C disk system? \x0d\ is one of the most common Windows 7 problems in 10, so I won't talk about the universality of this problem here. Let's get to the point and give you the perfect solution. \x0d\ However, this involves some system setup and optimization. Although there is no danger, I suggest you read it carefully. At least, you should know the principles and methods, and you can recover from the past at any time. After all, some reasons why WIN7 takes up C disk space are good for everyone's system, such as application caching and so on. \x0d\\x0d\ Remind everyone that this article uses drive C to refer to the drive letter where Windows 7 is installed, and it is represented by drive C. If WIN7 is installed on other drives, you can draw a gourd ladle. \x0d\ 1。 Deep parsing perfectly solves \x0d\ 1. hiber fil . sys:Start >； All programs > attachments: right-click "command prompt" to select administrator to use, and then enter: powercfg-off \ x0d \ This file is a hidden system file under the root directory of drive C, and the size of the hidden hiberfil.sys file is just the same as its own physical memory. When you put your computer into hibernation, Windows 7 will write all the memory contents to Hiberfil.sys file before shutting down the system. Then, when you turn on the computer again, the operating system uses Hiberfil.sys to put all the information back into the memory, and the computer returns to the state before it was turned off. But Windows 7 won't delete this file, but save it on the hard disk, occupying some disk space in vain. With the sleep function, you can choose not to use the sleep function, and everyone in the team will turn off the hard disk owner. Take up space and read and write hard disk frequently. Assassin's t6 1 just added four G's. Under Windows 7, the first way to safely delete hibernation files is to run cmd.exe as an administrator to open a command line window, and then run: powercfg -h off. Note that the hidden file of hiberfil.sys left in drive C can be deleted directly after being unhidden. \x0d\2。 Virtual memory page file. Sys: \ x0d \ Windows system, including Windows 7, is set to 1.5 times the size of physical memory by default as a paging swap file. If you are the size managed by the system, then this size will change automatically, and it will often get bigger and bigger. If the physical memory is less, only 5 12m or 1g, you can choose to keep this file. \x0d\ If you keep this file, we suggest that you put it in another partition instead of the C disk (system disk), otherwise you still need to delete it manually when making Ghost or other backups. It is suggested that the size must be specified, that is, 1.5 times the physical memory size of Ram. \x0d\ If your memory is larger than 2G, we suggest that you directly turn off the virtual memory function, and you will find that your entire Windows system is "flying". \x0d\ Method of setting virtual memory: Click System in Control Panel-Classic View, click Advanced System Settings on the left, click the first setting (performance), click Advanced, and then click Settings in virtual memory. Note that you can directly remove and delete the hidden pagefile.sys file on drive C. \x0d\3。 Application cache brought by the function of Superfetch: \x0d\ In Windows 7 system, the technical features of Vista Superfetch are used. Specifically, you can refer to the technical explanation of Windows WIN7 SuperFetch/Prefetch to teach you how to set up WIN7 startup pre-reading and application pre-reading. \x0d\ cleaning method: just delete all files in the folder c:\windows\prefetch. \x0d\4。 Temporary files generated by application: \x0d\ Temp folder which is generally stored in windows\temp folder and user folder \x0d\ Cleaning method: Just delete all files in folders c:\windows\temp and C: \ Users \ Your User Name \ Appdata \ Local \ Temp. \x0d\5。 Temporary files generated by browsers such as ie: \x0d\ Cleaning method: In the Internet option of the control panel, just delete cookie and IE temporary files, especially before backing up the system. \x0d\6。 System Restore, System Volume Information Folder: \x0d\ System Volume Information Folder, whose Chinese name can be translated as "System Volume Label Information". This folder stores the backup information restored by the system. \x0d "System Restore" is one of the most practical functions of Windows operating system. It records the state information of the system at a specific time in the form of "snapshot", that is, the so-called "restore point", and then recovers according to this information when necessary. There are two kinds of restore points: one is automatically created by the system, including system checkpoint and installation restore point; The other is created by users themselves according to their needs, which is also called manual restore point. With the increase of users' time using the system, there will be more and more restore points, resulting in less and less hard disk space, and finally they will be warned that "there is not enough disk space". It is also the most space-consuming file in the system disk. Over time, the file size can reach 4G, or even more! \x0d\7。 Automatically upgrade the new backup of system files generated by the service pack \x0d\ It is recommended that this should not be moved, and it is better to keep it. You can delete it if you want. Oh \x0d\8. Windows 7 system logs and event logs \x0d\ are generally in the LogFiles folder under the System32 folder in the Windows folder. It is possible to delete \x0d\9 and NTFS partition directly, but it can be compressed. Just choose to ignore them all. \x0d\ I used no more than 7G until all the software was installed. \x0d\ It took me some time to remember that the system was win 7 when I just bought the computer. I think of my own C drive, and the available space is 30G. But after half a month, when I looked again, I found that it was only 15G. Finally, I realized that it was the reason why the system was restored to its original point. Finally, I just deleted the restore point. \ x0d \ Attribute-& gt； Advanced system settings-> System protection->; Configuration->; Delete this is my personal opinion \x0d\ which can reduce the space of drive C.