Which files can be deleted in drive C?

The first class, all hidden files with the beginning and end of $ can be deleted.

This type of files are generally the uninstallation programs left behind by the upgrade system, which occupy a large space and are not very useful. Therefore, deleting the files will not affect the system. However, these files are hidden files. Therefore, you must enable display of hidden files in "Folder Options> check.

A large number of files under administr files

As a user in the window system, many temporary files can be deleted directly without worrying about system crash. Most of these files are stored in documentandsettings \ A dministr. Specifically, all files except index files under s; all files under localsettings \ Temp; all files under localsettings \ temporaryinternetfile; and all files under localsettings \ histori; all files under recent.

In the third category, files in other folders in the window

Apart from the first two categories, many upgrade Backup files and drive backup files can be deleted, which are stored in all files (temporary files) under windowtemp ); windowservicpackfil: backup files after SP1 or SP2 upgrade); compressed files under windowsdrivcachei386 (Driver-ordered backup files); all files under windowsoftwardistributiondownload.

1. Clean up my documents

"My Documents" is called "Documents and Settings" in the system. This is a special directory in XP, which records some special file information of users. Next, let's see what can be deleted.

C: \ Documents ents and Settings \ All Users \ Application Data \ Microsoft \ Media Index

This folder is related to wmps8. If you have upgraded to wmp9, you can delete it.

C: \ Documents ents and Settings \ All Users \ Application Data \ Microsoft \ Media Player

This folder is related to wmp9. If wmp9 is not commonly used, you can delete it without affecting the use of wmp9 in the future. Because the system will automatically recreate the content when wmp9 is used next time.

C: \ Documents ents and Settings \ All Users \ Application Data \ Microsoft \ User Account pictures \ default pictures

These images are used when you set up an account or use MSN. They can be deleted or replaced with your favorite images.

C: \ Documents ents and Settings \ All Users \ Documents ents (or shared documents ENTs) \ my music

This directory is special. Its name is different from the name displayed in the toolbar. The actual steps for entering this directory are: "c: \ Documents and Settings \ All Users \" → "SHARE document" → "share music ". Generally, users do not place music files here. If they do not, they can delete them.

C: \ Documents ents and Settings \ All Users \ Documents ents (or shared documents ENTs) \ my pictures

Similar to the my music directory, you can delete an image without placing it here.

C: \ Documents ents and Settings \ USERNAME \ My Documents ents \ my music

Generally, music is stored in hard disks, So delete it. Note that if you often play WMA files, you will inevitably download some music playing licenses to the local hard disk, and the system will put these licenses in this directory by default, if you see the license Backup directory in the directory, we recommend that you copy it to another location and change the path in WMP: Tools/license management. You can also delete this certificate, which will be automatically downloaded from the Internet the next time you play the video.

C: \ Documents and Settings \ All Users \ [start] Menu \ Program \ attachment \ auxiliary tool

The shortcut of the system Auxiliary Function Wizard is stored here, which is prepared for users who have special requirements. If you are not familiar with it, you can delete it.

C: \ Documents and Settings \ All Users \ [start] Menu \ Program \ attachment \ Communication

This can also be completely deleted, because it is just a shortcut icon.

C: \ Documents and Settings \ User name \ [start] Menu \ Program \ attachment
This directory is a shortcut icon for some programs. There are very few functions actually used in the attachment, and only "Notepad" and "Windows Resource Manager" are commonly used ". Copy these programs to "C: \ Documents ents and Settings \ All Users \ [start] Menu \ Program \ attachment", and then delete the directory.

C: \ Documents and Settings \ User name \ favorites

The shortcut icon here is "MSN. COM and radio station guide. Have you used these? If it is useless, delete it.

C: \ Documents and Settings \ User name \ favorites \ links

As shown in the preceding figure, you can delete this directory if it is not used. Modify the Registry to permanently delete the linked folder. In the registry, locate the "HKEY_CURRENT_USER \ Software \ Microsoft \ Internet Explorer \ toolbar" item and delete the value of "linksfoldername" on the right.

2. Start with Program Files

"C: \ Program Files" is very familiar to everyone, because the default installation path is here when installing the program. Next let's take a look at the content.

C: \ Program Files \ Windows Update

This directory is used for upgrade and can be deleted. You only need to log on to the Windows upgrade website again to upgrade the directory system.

C: \ Program Files \ Windows Media Player \ skins

This is the "skin" that comes with WMP. I believe that many "skins" won't be used. Instead, we should leave only a few common ones and delete the remaining ones.

C: \ Program Files \ common files \ Microsoft shared \ stationery

This is a stationery pattern in outlook. It can be used and deleted if it is not used. If you do not need outlook to send and receive emails, delete all emails.

C: \ Program Files \ Internet Explorer \ signup

There is a program shortcut to start the Network Setting wizard. If your network is normal and you do not need the help of the wizard, delete it.

Iii. Windows directories can also be cleaned up

Do not be intimidated by "C: \ Windows". Many items can be deleted. In this directory,. Bak,. BMP,. Old,. tmp files can be deleted. In addition to schedlgu.txt (which is used to schedule task program services), The. txt file can also be deleted. Notepad.exeand taskman.exe can also be deleted, because there is a backup under the "System32" directory. In addition, clock. Avi and control. ini files can be deleted without affecting the system.

C: \ Windows \ $ ntuninstall $

This is the directory automatically created by the system when Windows is upgraded online. It is used to conveniently uninstall installed system patches. If the patch runs properly, these directories will be meaningless. You can safely delete these directories and files. You can uninstall these patches in "add or delete programs". Of course, the patches are not actually deleted, but the "add or delete programs" window is cleaned up.

C: \ Windows \ cursors

This directory contains the mouse solution. If it cannot be used, delete it.

C: \ Windows \ Help

When you run Windows XP for the first time, the system always prompts you to run "Roaming Windows XP". The Chinese version uses an HTML file with only files and no sound. In fact, the English version of the roaming function is also installed in the system. Although it is English, there are languages, music, and beautiful animations. It is called "tours/mmtour.exe" in the directory ". If no, delete the entire "Tours" directory. In the c: \ windows \ system32 \ dllcache.pdf, delete the tourstrt.exe1_tourw.exe and the other tourstart.exe files in the c: \ windows \ system321_directory.

C: \ Windows \ INF

Many files with the same file name and different suffixes are displayed in this directory. INF and. PNF ,. PNF is. if the Pre-compiled file of the INF file does not exist. PNF file ,. when the INF file is running, the corresponding. PNF file. Therefore, all. PNF files in this directory can be deleted.

C: \ Windows \ Media

This is the system's built-in mid and WAV sound effects, which can be deleted if you like them.

C: \ Windows \ Temp

This is a temporary folder. You can delete it. However, you should note that it is best to delete it after the system is started, because many software installation programs will use the files here after the new startup to complete the final installation.

C: \ Windows \ Web

Both the "GIF" and "htm" files can be deleted. Go to the "Wallpaper" directory and check that most of the desktop backgrounds that come with the system are here. If you do not like them, you can delete them.

C: \ Windows \ system32

There are many folders named "1033", which mainly store system error reports, most of which are empty folders, which can be safely deleted.

C: \ Windows \ system32 \ direct \ dinput

The files in this directory are mainly game device configuration files. If they are not used, delete them.

C: \ Windows \ system32 \ reinstallbackups

There are many sub-directories that are backed up by hardware drivers on the computer. If you upgrade or replace a hardware and are sure that the original driver will not be used, you can delete the corresponding directory.

In addition, you can search for the "desktop. ini" file in the system and delete it all. If a "desktop. ini" file is required by the system, the system will recreate it as needed. In the root directory of the C drive, there are four files: autoexec. bat, config. sys, Io. sys, and msdos. SYS. If they are 0 bytes, they can be deleted.

The system saves memory and accelerates the boot speed as follows: 1. Disable the compression folder function, 2. Reduce the wait time for disk scanning, and you will see the effect immediately after restart. 3. Delete the system backup file. After various software and hardware are installed properly, it is rare for XP to update files. 4. Start -- run: services. MSC to go To the XP built-in Service Modification list.

1. Disable the compressed folder Function

If you open a zip file using WinZip or WinRAR software, the following optimization is a pretty good one. Windows XP has built-in ZIP files. We can use ZIP files as folders for browsing. However, the system must use some resources to implement this function. Disabling this function can improve the system performance. The implementation method is very simple. You only need to cancel the registration of zipfldr. dll.

Start --- run: regsvr32/u zipfldr. dll

2. Reduce the wait time for disk scanning. You will see the effect immediately after the disk is restarted. Start --- run: CHKNTFS/T: 0

3. Delete the system backup file. After various software and hardware are installed properly, it is rare for XP to update files. Start --- run: sfc.exe/purgecache

Press enter to save MB. If you are worried about it, do not execute it. This method will only save space, not speed up.

4. Start --- run: services. msc enter the XP built-in Service Modification list. In the list, choose "close", "Manual", and "automatic" for each service attribute ". Alerter-Error alert. (Can be disabled)

Application Layer Gateway Service-provides third-party network sharing/firewall support services, which are required by some Firewall/network sharing software. Takes MB of memory. (Can be disabled)

Application Management-used to set, release, and delete software services.

Automatic update for automatic Update for Windows. (Can be disabled)

Background Intelligent Transfer Service-this service was originally used to transmit information between servers in http1.1. Microsoft said it supports resumable data transfer when Windows is updated.

ClipBook-share and paste content with a LAN computer. (Can be disabled)

COM + Event System-required for some COM + software. (Check your C: Program filescomplus applications directory. There is nothing to close this service)

COM + Event System Application-Same as above (can be closed)

Computer Browser-the service used to browse LAN computers! (Can be disabled)

Cryptographic Services-used to confirm the Windows File fingerprint when updating Windows. It is enabled only when updating Windows. (Can be disabled)

DHCP Client-static IP addresses are required (XDSL, etc ).

Distributed Link Tracking Client-used to update the connection information in the LAN. For example, if there is a file in computer A and a connection in computer B, if the file is moved, the service will update the information. Occupies 4 MB of memory. (Can be disabled)

Distributed Transaction Coordinator-boring stuff. (Can be disabled)

DNS Client-DNS resolution service. (Can be disabled)

Error Reporting Service-error Reporter: Reports errors in Windows to Microsoft. (Can be disabled)

* Event Log-the system log record service, which is used to find system faults.

Fast User Switching Compatibility-fast service switching for multiple users. (Can be disabled)

Help and Support-help. (Can be disabled)

Human Interface Device Access-supports "mentally retarded" computer accessories. For example, the button that increases the volume on the keyboard. (Can be disabled)

Imapi CD-Burning COM Service-XP instant messaging service, no need to use software. Occupy 1.6 Mb of memory (can be disabled)

Indexing Service-horrible XP slowdown ...... (Can be disabled)

Internet Connection Firewall (ICF )...... -XP firewall. (Disable it if not needed)

IPSec services-public users cannot connect to the edge. (Can be disabled)

Logical Disk Manager-disk management service. It will notify you when necessary, so it is generally disabled. (Can be disabled)

Logical Disk Manager Administrative Service-same as above. (Can be disabled)

Messenger-it's not MSN. If you don't want to be harassed, turn it off. Note: This is the use of the demon thorn. (Can be disabled)

MS Software Shadow Copy Provider-Useless, said to be used for backup. But ...... Useless. (Can be disabled)

Net Logon-used to log on to the domain controller. (Can be disabled)

NetMeeting Remote Desktop Sharing uses NetMeeting for computer sharing. (Can be disabled)

1. Make the system disk more clean
1. Go to Control Panel> system> advanced> environment variable.
2. Click temp in the user variable-edit-change the long string content to D: \ Temp (you can change it to another disk, but not the system)
3. Similarly, change TMP to D: \ temp. These things are the main cause of rapid expansion of your system disk. Their properties are hidden and some friends cannot find them .)
4. In the "System variable", change temp and TMP to the above one.
5. Right-click my documents on the desktop -- properties -- set "target folder location" in the target folder and change it to D: \ mydocuments or D: \ My Documents (which one you like) can be moved.
This is very important. In fact, when our computer crashes, there is generally no important thing in the system disk, and all the useful things are in mydocuments, so we move it to a nest, you don't have to worry about anything. Some friends still don't back up the content in mydocuments in DOS mode (because the folder name is very long, if you use Chinese, that is even more troublesome)
6. Right-click internetexplorer -- properties -- General -- Temporary Internet Files -- settings -- move folder -- select D: \ temporaryinternetfiles \ (if not, you can create it first, of course, D: \ Temp or anything else, you have the final say) -- OK
7. System -- Advanced -- Performance -- settings -- Advanced -- virtual memory -- change -- select D or other non-system partitions -- custom size -- input size m -- settings; select C or the partition where the system is located -- Non-paging file -- set -- OK, so that the virtual memory is also transferred to other hard disks.
Now, the world (System Disk) is quiet!
2. Weight Loss for XP (If your hard disk is enough, you can leave it empty, because if you want to use one of the functions, you will not be able to lose weight.
1. delete system file backup
Sfc.exe/purgecache
2. Delete drive backup
Driver. cab file in the Windows \ drivercache \ i386 directory (73 MB)
3. Cancel system restoration (but remember to keep the system disk for system restoration. If you don't want to use it, it will all be closed. I keep it anyway :)
4. Delete the Help File (more than 40 MB reduced)
5. delete the files under \ windows \ system32 \ dllcache (minus 200-300 MB). This is the backup DLL file.
You can do this as long as you have copied the installation file.
First clean up the file and registry garbage with Master optimization. You can delete all the help files in the Windows folder in safe mode, but not in normal mode. You can also delete the desktop background image in the web folder. (Show all files) all folders with a $ header can be deleted. In the properties of my computer, "Virtual Memory" can be transferred from drive C to another disk. Disable System Restoration and sleep. Then, perform the fragment.