前不久電腦常常無故出現 0x000000F4 BSoD 藍屏, 只知道跟硬碟有關,
真正原因找了好久, 排線換了, 硬碟也換了, 均排除了硬體問題,
最後找到原因是出在 Windows 7 預設有啟動節能設定,
硬碟不用一段時間後會自動關閉, 而這個動作, 會造成偶發性 BSoD,
控制台 > 變更進階電源設定 > 硬碟 關閉硬碟前的時間設定為 0 (永不)
關掉省電後問題迎刃而解.
以上是個人遇到的狀況, 有類似問題的人可參考看看.
Windows: November 2011 Archives
如何在 Windows XP 和 Windows Server 2003 中停用用戶端 DNS 快取
停止 DNS 快取 net stop dnscache (若要永久停用 DNS 快取,需將 DNS Client 服務啟動類型設為「停用」)
顯示 DNS 快取 ipconfig /displaydns
清空 DNS 快取 ipconfig /flushdns
Windows DNS Client 有自己的 TTL, 共不會像一般 DNS 會參照 Domain 的 TTL,
解析正常的 TTL 預設值為 86,400 秒 (1 天)
解析失敗的 TTL 預設值為 900 秒 (15 分鐘)
中文版可能因為軟體翻譯的關係, 會讓人看不太懂,
其中正值回應(positive responses)就是指解析正常, 負值(negative responses)就是指解析失敗
可以透過修改 Registry 來變更, 例如解析正常的 TTL 43200, 解析失敗的 TTL 600
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters]
"MaxCacheTtl"=dword:0000a8c0
"MaxNegativeCacheTtl"=dword:00000258
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