代码如下：

There is not enough disk space on C:WINDOWS$NtServicePackUninstall$ to install Service Pack 3 Setup requires an additional 4 megabytes of free space or if you also want to archive the files for uninstallation，Setup requires 4 additional megabytes of free space. Free additional space on your hard disk and then try again.

解决措施：

1. 找到注册表

2. 代码如下：

HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionSetup

3. 创建字符串 ，值为 C：

4. 重启电脑，重新安装补丁即可。

以上就是Bootcamp安装WinXP补丁时C盘空间不足问题的解决方法介绍了。