Teach you how to lose weight to 64-bit Windows XP system

Q: My computer configuration is P4 2.4GHz CPU, 80GB hard drive, 1GB memory, after installing 64-bit Windows XP, no application has been installed, but The space occupied by the system disk is as high as 3.0GB. Why is this? How to solve it?
A: The memory capacity is 1GB, the problem is here. Since Windows 2000, the Windows system has adopted a page file (called "virtual memory" under Windows 98 to improve system performance. It sets a part of the hard disk space as virtual memory, thus expanding the available "memory" space of the computer to meet the requirements of the program running. The page file is at least 1.5 times the size of physical memory. In other words, only this file will occupy more than 1.5GB of system disk space. Page files cannot be deleted manually, they can only be moved to other partitions. Right click on My computer →Properties →Advanced. In the dialog that opens, click Settings under Performance, then click Advanced in the dialog that opens, and then click on Virtual Memory to see the virtual memory settings. The interface is gone. Move the pagefile.sys file to the D drive and take effect after reboot. The pagefile.sys file can be found in the root directory of the D drive. At the same time, the file with the same name under the C drive will disappear automatically, and the space occupied by the C drive will be restored to about 1.5 GB.