http://social.technet.microsoft.com/Forums/en-US/w7itprohardware/thread/c4cca52e-81c3-4139-b600-502b0fbd32fc
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As I know, currently there are many drives that don't properly report that they are SSDs when queried, so Windows is not able to properly apply the SSD optimizations to those drives. You can check to see if an SSD has been properly detected by looking in Disk Defragmenter. To do this, please refer to the following steps:
1)Open Disk Defragmenter ==> 啟動磁碟重組工具
2)Click the Configure schedule button ==>按下"設定排程"按鈕
3)Click the Select disks button==>按下"選取磁碟"按鈕
If the disk is missing from the list, then it has been detected as an SSD and will not be automatically defragmented.==>如果特定SSD硬碟並未在清單中出現,則該SSD已被正確識別為SSD,不會被自動重組。
If the disk is an SSD, but has not been detected as such, then it's important to remove the check next to the disk in this list so that Windows does not attempt to defragment the drive, which will reduce the life of the drive. ==>如果該SSD出現在清單中,表示Win7無法正確識別,則應手動在清單中取消勾選該SSD,以免縮短其壽命。
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其實樓主確實問了一個看似簡單、細想之下卻不易回答的好問題,這幾天有空就找資料,但直到剛才才找到比較確切的資訊(因為最好是直接來自微軟的官方回答),樓上各位不妨照這個建議步驟試試看您的SSD是否有正確被Win7識別為SSD, 如果有未識別的情況,若不介意,也請po出您的結果跟SSD型號,看看SSD原廠是否能夠修正韌體,因為在沒有被正確辨識的情況下,即使您的SSD支援Trim,但Win7能否正確的發送Trim命令給SSD,也將令人十分存疑.....
ycweng wrote:
這算是來自Micro...(恕刪)
請問 ycweng 兄 我有使用了 您提供的討論網站 裡的步驟
打開 我的電腦>選擇C槽>按右鍵選擇內容>工具>立即重組>接下來會自動開始 分析 磁碟
分析好後 按下 修改排程 沒任何異狀!
選取磁碟區 這裡面 只有兩個選項 (選取所有磁碟) 與 (C:) 都是有括號的
想請教 ycweng兄 我目前用的是 萬轉 迅猛龍
如果 未來 改使用 SSD 當作 系統碟 的話 請教 在 選取磁碟區 選項 的代號 會從 (C:) 改變成 (SSD)? 或是 (SSD C:)?
因而 可以從中得知 windows 7 已經將硬碟辨識成 使用的是 SSD?
煩請賜教 謝謝
xttm wrote:
我按照你的步驟去做了...
確實看不到
但是...
我的SSD有做RAID0(OCZ 60G*2)
卻還能被W7辨識出來
感到非常神奇
Win7判斷SSD的方式,是透過ATA command去看系統內的硬碟是否屬非旋轉性的媒體,因此即使是將SSD做成RAID後,如果RAID Volume Manager有將這個資訊正確bypass傳上去、讓Win7能夠識別,這結果並不神奇呀!

關於SuperFetch,同一個Microsoft.com的討論串有提到,在具有SSD的系統上,SuperFetch本來就不是必定會被關掉的:
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Will Superfetch be disabled on SSDs?
Yes, for most systems with SSDs.
If the system disk is an SSD, and the SSD performs adequately on random reads and doesn’t have glaring performance issues with random writes or flushes, then Superfetch, boot prefetching, application launch prefetching, ReadyBoost and ReadDrive will all be disabled.
Initially, we had configured all of these features (包括SuperFetch)to be off on all SSDs, but we encountered sizable performance regressions on some systems. In root causing those regressions, we found that some first generation SSDs had severe enough random write and flush problems that ultimately lead to disk reads being blocked for long periods of time. With Superfetch and other prefetching re-enabled, performance on key scenarios was markedly improved.
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jamespotrer wrote:
感謝 我剛剛看了我的...(恕刪)
在確認Win7有正確辨認出SSD,接下來問題可能就是Win7內建的Trim功能是否有正確作業了,您的Kingston 30GB是SSDNow V嗎?a0955999大有po出他對這顆的經驗談:
http://www.mobile01.com/topicdetail.php?f=490&t=1706886&p=1#21728830
這顆的問題似乎在於Trim的作業方式,Toshiba的控制器工作方式似乎蠻獨特的,
http://www.mobile01.com/topicdetail.php?f=490&t=1706431&p=1#21695165
http://www.mobile01.com/topicdetail.php?f=490&t=1706886&p=2#21731506



























































































