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Yesterday I installed Windows 8.1 (clean install - no migration) on a new SSD (Samsung 840 EVO). I then ran winsat formal to let Windows optimize itself, as suggested here: Windows 8.1 SSD Settings, but I don't see the expected results in the registry:

  • From the article: ".. once Windows 8.1 discovers it is installed on a SSD it removes the EnableSuperfetch value entirely". My EnableSuperfetch value is still there under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters
  • From the article: "ReadyBoot is also disabled by running winsat formal.". Under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\ReadyBoot, my Start value is still 1.

So now I have two questions:

  1. Didn't Windows detect that it runs on an SSD?
  2. Does it matter for the lifetime/reliability of the SSD?
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Oh man.. All it took was two reboots with some idle time in-between, and all settings were updated correctly. The need for reboots was even clearly described in the linked article.

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