Windows XP can't complete defragmentation

Q: I am using Windows XP. When defragmenting the C drive, the system prompts that because the file is corrupted, the scan cannot be performed, but the other is sorted out. There is no problem when partitioning, so seek a solution for this.
A: In order to improve the loading speed of the system and various applications, Windows XP uses the "pre-read" technology to load device drivers, services and shell programs before actually using them. The key to pre-reading technology is to learn the previous boot process and optimize the load mode for the various files used during the boot process. This optimization technique is also used in the software. The system analyzes the first few startups of each software, and then creates a virtual "memory image" describing the application requirements and saves this information to "C: \\Windows\\prefetch” folder. Once the image is built, the software startup speed is greatly improved. However, poor pre-reading will generate a large number of pre-read files, occupying valuable hard disk space, resulting in a system search burden and slowing down the system. After the system is used for a period of time, the pre-reading folder will become very large, and there will be some dead link files in it, and some even cause some other problems. At this time, just enter this pre-read folder and select to delete the dead link file with the problem. It is generally not necessary to delete all files in this folder unless it is still an error or if there is a problem at startup, it is recommended to empty the folder.