System knowledge: What is the huge file of C disk

Q: My computer C drive has three files that are too large, plus more than a dozen G! I don't know what the problem is, please advise. The three files are: C: WindowsWinsxs, which has a huge 9GB. C: FaceProv.log, 2GB. C: Pagefile.sys, 2.4GB.

A: Let me talk about winsxs first. According to Microsoft's official instructions, the folder is meant to support the quarantine of COM and shared DLLs. Windows XP provides a folder called "WinSxS" (Windows Side-by-Side) in the "Windows" directory. The system uses this folder to store various versions of Windows XP components, reducing configuration problems (DLL hell) caused by Dynamic Link Libraries (DLLs). Multiple versions of the component are stored in this folder. Windows XP allows Win32 API components and applications to use versions of Microsoft components that are identical to the version they were tested with, and are not affected by other programs or operating system upgrades. Windows XP does this through XML files that hold metadata about application configuration, such as COM classes, interfaces, and type libraries. It can be seen that the files in this folder are very important. Never delete them (there are serious problems that users can't enter the system after deleting), and C:WindowswinsxsBackup is a backup file that can be deleted.

Let's talk about faceprov.log. From its suffix name log, it is a log file that can be deleted.

Finally, say Pagefile.sys, this is a page swap file, this file can not be deleted, but we can change its size and storage location: right click on "My Computer /Properties", and then in the dialog box Under the “Advanced” tab, click the “Settings” button under “Performance” and in the “Performance Options” dialog box, switch to the “Advanced” tab and click on “Virtual Memory”. “ under the "Change" button, you can change the size of the page file as needed —— first select the C drive, then select "no paging file", then click the "set" button; then select To generate the drive letter of the file, click on “Custom Size” and enter the appropriate value. This value is usually 1.5 times the physical memory. Click ““Settings”, and finally, restart the computer. The file is on another partition.