以管理员权限运行命令提示符，然后在窗口中执行以下命令：

# 查询系统保留空间是否启用
DISM.exe /Online /Get-ReservedStorageState

# 禁用系统保留空间
DISM.exe /Online /Set-ReservedStorageState /State:Disabled

# 启用系统保留空间
DISM.exe /Online /Set-ReservedStorageState /State:Enabled

或命令行脚本形式关闭：

@ECHO Off PUSHD %~DP0 Md "%WinDir%\System32\test_permissions" 2>NUL||(Echo 请使用右键管理员身份运行&&Pause >NUL&&Exit) Rd "%WinDir%\System32\test_permissions" 2>NUL ::禁用预留空间 ECHO.&ECHO 禁用预留空间 Reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ReserveManager" /v "MiscPolicyInfo" /t REG_DWORD /d "2" /f Reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ReserveManager" /v "PassedPolicy" /t REG_DWORD /d "0" /f Reg.exe add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\ReserveManager" /v "ShippedWithReserves" /t REG_DWORD /d "0" /f DISM.exe /Online /Set-ReservedStorageState /State:Disabled