As one of the most common Windows Vista problems in 10, and the universality of this problem, let's get down to business and give you the most perfect solution.

However, this involves some system setup and optimization. Although there is no danger, I suggest you look carefully. At least, you should know the principles and methods, and you can recover from the past at any time. After all, Vista takes up C disk space for some reasons, which is good for everyone's system, such as application caching and so on.

Next, pick up the scalpel and work with Vista House () team to find out the reason why Vista C disk space is getting smaller and smaller, and completely eliminate the culprit.

Remind everyone that in this article, drive C is used to refer to the drive letter where Windows Vista is installed, and it is represented by drive C. If Vista is installed on other drives, you can also follow suit.

First, in-depth analysis, improve the solution.

1, hibernation file hiberfil.sys:

This file is a hidden system file in the root directory of drive C. The size of the hidden hiberfil.sys file is exactly the same as your own physical memory. When the computer goes into hibernation, Windows Vista will write all the memory contents into 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 Vista will not delete this file, but save it on the hard disk, which will take up some disk space in vain. With the sleep function, you can choose not to sleep, and everyone in the Vista House team turned off the hard drive. Take up space and read and write hard disk frequently. Assassin's t6 1 just added four G's.

Under Vista, 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 hiberfil.sys hidden file left on drive C can be deleted directly after it is unhidden.

2. Virtual memory page file. sys:

The default size of Windows system (including Vista) is 0.5 times of 65438+ physical memory, which is used as paging exchange file. If you are a system-managed size, then this size will automatically change and often become larger and larger. If the physical memory is less, only 5 12m or 1g, you can choose to keep this file.

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.

If your memory is more than 2G, we suggest that you directly turn off the virtual memory function, and you will find that your entire Windows system is "flying".

Method of setting virtual memory: Click System in Control Panel-Classic View, click Advanced System Settings on the left, click the first setting (performance), and then click Advanced. In virtual memory, click Settings. See: screenshots and detailed methods. Note that the hidden pagefile.sys file is left on drive C, and can be deleted directly after unhidding.

3. The application cache brought by the 3.Superfetch function:

In Windows Vista system, the new technical features of Superfetch are used. See: Superfetch/Prefetch technology in Windows Vista, Vista optimization: teach you how to set up Vista startup pre-reading and application pre-reading.

Cleaning method: Just delete all files in the folder c:\windows\prefetch, or use one-click cclean in Vista Optimizer.

4. Temporary files generated by the application:

Generally stored in the windows\temp folder and the temp folder of the user folder.

Cleaning method: just delete all files in folders c:\windows\temp and C: \ Users \ Your User Name \ Appdata \ Local \ temp. Or delete system garbage with one click in Vista Optimizer.

5. Temporary files generated by browsers such as 5.IE:

Cleaning method: In the Internet option of the control panel, just delete cookie and ie temporary files. It is strongly recommended to use the one-click cleaning online tracking function in Vista Optimizer 2.0, especially before backing up the system.

6, system restore, system volume information folder:

The Chinese name of the system volume information folder can be translated as "system volume label information". This folder stores the backup information restored by the system.

"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!

7. A new backup of system files generated by sp1or a patch package for automatic upgrade.

Vista House () suggests that you don't need to touch this. Better keep it.

8.Windows Vista system logs and event logs

Generally, it can be deleted directly in the LogFiles folder under the System32 folder of the Windows folder.

Second, automatically clear the garbage in the C disk space and expand the C disk space.

Two months ago, Vista House () provided a batch file to delete system garbage:

@ Turn off echo

Echo Vista 123.com is helping you with the cclean file. A moment, please. ......

del /f /s /q %systemdrive%\*。 Terminal Monitor Program (abbreviation of terminal monitor program)

del /f /s /q %systemdrive%\*。 _mp

del /f /s /q %systemdrive%\*。 log

del /f /s /q %systemdrive%\*。 Dizziness

del /f /s /q %systemdrive%\*。 chk

del /f /s /q %systemdrive%\*。 old

del/f/s/q % system drive % \ recycled \ *。 *

del /f /s /q %windir%\*。 bak

Del/f/s/q% windir% \ prefetch \ *. *

rd/s/q % windir % \ temp & amp； md %windir%\temp

del/f/q % user profile % \ cookie \ *。 *

del /f /q %userprofile%\recent\*。 *

del/f/s/q " % user profile % \ Local Settings \ Temporary Internet Files \ *。 *"

del/f/s/q " % user profile % \ Local Settings \ Temp \ *。 *"

del/f/s/q " % user profile % \ recent \ *。 *"

Echo Vista 123.com reports: cclean finished!

Echo. & stop

You can save the above code as cleantemp.bat and run it directly.

However, the above is far from enough, and it is not simple enough. Vista Optimizer has provided two shortcut buttons, one-click to clear system garbage and one-click to clear online traces, since version 2.0beta2, to help you get it!

Third, C disk space slimming weight loss

The above method solves the problem that the space of C drive is getting smaller and smaller, so there are still many useless files that we need to simplify, such as some help files, some ugly wallpapers that will never be used, video files that come with the system, and so on. Then, just use the Vista Slimming Master included with the Vista Optimizer.

In particular, the new version of slimming cleaner has completely deleted the system driver, so don't worry. Unless you are a system expert, it is recommended that you save and drive related folders, so that you can lose 200m to 3 g.

Well, so far, the problem of getting smaller and smaller space on disk C has been completely sorted out and solved. The assassin's T6 1 notebook is lost 13 G! I hope you will like the original articles and original software of Vista House more and more, and we will continue to work hard! In March 2008, a new version of Vista Optimizer 3.0 will be released. Here, I wish you all like it better.

The following methods apply to XP:

1. Open my computer-Tools-Folder Options-View-Check the "Show all files and folders" option-OK.

2. Clean up the temporary files first, because it will also take up some space. And it's increasing every day:

All files under x: \ documents and settings \ user name \ cookies \ (keep index files)

All files under x: \ documents and settings \ user name \ local settings \ temp \ (user temporary files)

X: All files (page files) under \ Documents and Settings \ User Name \ Local Settings Temporary internet Files.

All files under x: \ documents and settings \ user name \ local settings \ history \ (history)

X: all files under \ documents and settings \ user name \ recent \ (shortcuts to recently browsed files)

X: all files under \ Windows \ temp \ (temporary files)

X:\WINDOWS\ServicePackFiles (backup files after upgrading sp 1 or sp2)

Compressed file under x:\WINDOWS\Driver Cache\i386 (backup file of driver)

All files under x: \ Windows \ Software Distribution \ Download.

3. If the system has been upgraded by windoes updade, please delete the following files:

Hidden files starting with $u ... in x:\windows\

4. Then defragment the disk, and please quit all running programs during defragmentation.

5. After defragmentation, open Start-Programs-Accessories-System Tools-System Restore-Create a restore point (it is best to use the current date as the name of the restore point).

6. Open my computer-right-click the system disk-Properties-Disk Cleanup-Other options-click Cleanup in the System Restore bar-select Yes-OK.

7. After all kinds of software and hardware are installed properly, XP rarely needs to update files. Delete the system backup file: Start → Run → sfc.exe/Purge Cache nearly 3xxM. (This command is used to immediately clear the Windows File Protection file cache and release the space it occupies. )

8. Delete the dll file under \windows\system32\dllcache (minus 200——300mb). This is a backup dll file. As long as you copy the installation file, you can do it completely. In this case, you have nothing to say.

9.XP will automatically back up the hardware driver, but it is generally unlikely to change the hardware after the hardware driver is installed correctly, so you can also consider deleting this backup. The file is located in the \windows\driver cache\i386 directory and named driver.cab You can delete it directly, usually the file is 74M.

10, delete unused input methods: For many netizens, not all input methods included in the Windows XPt system are suitable for their own use, such as IMJP8_ 1 Japanese input method and IMKR6_ 1 Korean input method. We can delete them if it is not necessary. Input method is located in \windows\ime\ folder, occupying 88M space.

1 1. After upgrading, I found that windows\ has many directories similar to $ ntuninstallq311889 $. Kill them all, 1x-3xM.

12. Besides, putting things in the \windows\help directory is also a kind of harm to me, hehe. . . Kill them all!

13. Turn off system restore: The system restore function takes up a lot of hard disk space for a long time. Therefore, manual setting is needed to reduce the hard disk occupation. Open the System Properties dialog box, select the System Restore option, and select the Turn off System Restore on all drives check box to turn off System Restore. You can also set to restore only the disk or partition where the system is located. Select the partition where the system is located, click the "Configure" button, and cancel the "Turn off system restore of this drive" option in the pop-up dialog box to set the disk space for system restore. (Overall, the system restore function is good. It is recommended to use all disks except the one installed by xp. If there is not enough space on the hard disk one day, you can delete some earlier restore points through the system cleaner. )

14, the hibernation function will take up a lot of hard disk space. If you use less, you might as well turn off * * *. To turn it off, open the Control Panel, double-click Power Options, select the Hibernation tab in the pop-up Power Options Properties dialog box, and uncheck the Enable Hibernation checkbox.

15, uninstall unused components: XP installs some system components for the operating system by default, and a large part of these components are impossible for you to use. You can uninstall them in Add/Remove Windows Components. However, some components in XP are hidden by default and cannot be found in Add/Remove Windows Components. At this time, you can open the file \windows\inf\sysoc.inf with Notepad, and replace all the "hidden" characters in the file with spaces with the find/replace function. In this way, the hidden properties of all components are removed. After saving, run the Add-Remove program, and you will see many options that you didn't see before. Delete those components you don't need (remember to save them as sysoc.inf instead of the default sysoc.txt), such as Internat messenger service, fax service, Windows messenger, code table, etc. , can release nearly 50MB of space.

16. Clear the temporary files of the system: the temporary files of the system are generally stored in two locations: a temp folder under the Windows installation directory; The other is the x:\Documents and Settings "user name" \Local Settings\Temp folder (Y: the partition where the system is located). Files in both locations can be deleted directly.

17. Erase temporary Internet files: A large number of temporary Internet files generated when surfing the Internet regularly will save a lot of hard disk space after being deleted. Open IE browser, select Internet Options from the Tools menu, select the General tab in the pop-up dialog box, click the Delete File button in the Temporary Internet Files column, select the Delete All Offline Content check box in the pop-up Delete File dialog box, and click the OK button.

18. Clear the pre-read files: Although the pre-read setting of Windows XP can improve the system speed, after a period of use, the number of files in the pre-read folder will become quite large, resulting in a long system search time. Moreover, some applications will produce dead-chain files, which will increase the search burden of the system. So these pre-read files should be deleted regularly. The expected files are stored in the Prefetch folder of the Windows XP system folder, and all files under this folder can be deleted.

19. Compress NTFS drives, files or folders: If your hard disk uses NTFS file system and space is really tight, you can also consider enabling NTFS compression. Right-click the drive you want to compress-Properties-General-Compress Disk to Save Disk Space, then click OK, and select the required option in Confirm Property Change. This can save about 20% hard disk space. When compressing drive C, it is best to use safe mode for compression, which is more effective.

20. Close Dr.Watson: To close Dr.Watson, open the registry editor, find the branch of "HKEY _ Local _ Machine \ Software \ Microsoft \ Windows NT \ Current Version \ AEDEBUG", double-click the name of the Auto key under it, change its "Numerical Data" to 0, and finally press F5 to refresh the setting to take effect, thus canceling its operation. Still in the "start"->; Enter "drwtsn32" command in "Run", or "Start"->; "program"->; "attachment"->; "system tools"->; "system information"->; "tools"->; "Dr. Watson", call out Dr. Watson in the system, and only keep the option of "Dump all thread contexts", otherwise the hard disk will be read for a long time and occupy a lot of space once the program goes wrong. If this has happened before, please look for the user.dmp file, which can save tens of MB of space after deletion.

2 1, close the remote desktop: "My Computer"-> "properties"->; "Remote" and "Allow users to connect to this computer remotely" in "Remote Desktop" are ticked.

22. Cancel XP's support for zip: Windows XP turns on support for ZIP files by default, which takes up some system resources. You can choose "Start → Run", type "regsvr32/u ZIPfldr.dll" in the "Run" dialog box, and press enter to confirm that XP can cancel the support for zip decompression, thus saving system resources.

23. Turn off the error report: When the application fails, a window will pop up to send the error report. In fact, such an error report is almost meaningless to ordinary users, so it is a wise choice to close it. In the System Properties dialog box, select the Advanced tab, click the Error Reporting button, select the Disable Error Reporting option in the Error Reporting dialog box that pops up, and finally click OK. In addition, we can turn off error reporting from the group policy: type gpedit.msc from Run, run the Group Policy Editor, expand Computer Configuration → Management Template → System → Error Reporting Function, double-click Error Reporting in the setting bar on the right, and select the Disable radio box in the pop-up Properties dialog box to disable Error Reporting.

24. Turn off unused devices: Windows XP always tries to install drivers for all devices of the computer and manage them as much as possible, which will not only slow down the system startup, but also occupy a lot of system resources. In view of this situation, in the device manager, you can disable uncommon devices, such as PCMCIA cards, modems, infrared devices, printer ports (LPT 1) or serial ports (COM 1). Double-click the device you want to disable and select Do not use this device (disable) in the General tab of its properties dialog box. Settings will take effect when you restart, and then enable these devices from Device Manager when you need to use them.

25. Regularly clean the system restore point: turn on disk cleaning, select other options-> Clean the system restore point, and click Clean.

26, uninstall unnecessary programs, I don't need to say more about this.

27. Delete redundant fonts: It is recommended to keep only a few commonly used fonts. In c:\\Windows\\Fonts, keep Arial, Marlett, TimeNewRoman, MicrosoftScans Serif Regular, MingLiUPmingLiU, Modern, MSOutlook, MS Serif8/ 10/ 12, Script, Simsun &；; & ampNsimSun, Tahoma, Songti and so on.

27. Other optimization: a Install the application software on other hard disks (don't install it under the system disk, which is also good for reinstalling the system and can save a lot of things); B. Transfer all My Documents folders to other partitions: right-click the My Documents icon on the desktop and select Properties-> "moving"; Transfer all IE temporary folders to other partitions: open IE browser and select "Tools"->; "internet options"->; "general"->; "settings"->; "Move folder"; Transfer the virtual memory to another hard disk; E Point all pagefile.sys files to one place: Control Panel → System → Performance → Advanced → Virtual Memory → Change. Note that "Settings" will take effect; Right-click the "My Computer" icon on the desktop and select "Properties"-> Advanced-Performance Settings-> Advanced-Virtual Memory, set to 330-720. And clean it regularly.

Note: 1. The above contents have been strictly tested by myself, and the deletion will not cause any adverse effects on the system;

2.x stands for winxp system drive letter (the above content was determined after I synthesized several online articles and deleted them. The previous description is mainly about weight loss methods, and the latter is mainly about acceleration methods. )

3. Please use the above optimization according to the actual situation.

The above is the secret of my 10G hard disk, and now I only use 2.5G.