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SSD parameters are set incorrectly by 8.1 update

Anonymous
2013-10-17T23:58:30+00:00

For SSD system drives, the   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\ReadyBoot Start value should be "0". After upgrading from Windows 8 to 8.1, the start value for ReadyBoot was changed to “1”.

This value is set correctly after Windows Experience Index is run, but it appears WEI was removed from 8.1. So how do I restore to the correct value?

Windows for home | Previous Windows versions | Devices and drivers

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  1. Anonymous
    2013-10-18T22:54:05+00:00

    This is a problem for anyone with an SSD updating from Windows 8 to 8.1. Your Prefetch, Superfetch and ReadyBoot parameters will be changed to incorrect settings during the update.

    Windows Experience Index runs automatically on a clean installation of 8.1, but not on an update installation. This is necessary for setting the parameters correctly.

    Microsoft unwisely chose to eliminate Windows Experience Index from the 8.1 version. But it is still available from a command prompt.

    1. Open a command prompt
    2. type in "Winsat formal -v" and hit enter
    3. after it finishes, reboot  3 times. After that, your parameters will be set correctly for an SSD.

    Thanks to Praz from the OCZ Forum for figuring this out.

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  1. Anonymous
    2013-10-18T11:22:50+00:00

    Here is information from OCZ about ReadyBoot and why it should not be starting when your system drive is an SSD.

    http://www.ocztechnologyforum.com/forum/showthread.php?110371-ABC-GUIDE-New-Build-2013&p=783711&viewfull=1#post783711

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  2. Anonymous
    2013-10-21T15:13:57+00:00

    For SSD system drives, the   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\ReadyBoot Start value should be "0". After upgrading from Windows 8 to 8.1, the start value for ReadyBoot was changed to “1”.

     

    This value is set correctly after Windows Experience Index is run, but it appears WEI was removed from 8.1. So how do I restore to the correct value?

    Can you not just change the number in regedit?? do you need to run the Windows Experience Index?

    On my system the WEI would not complete in 8.0...

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  3. Anonymous
    2013-10-21T15:21:50+00:00

    Can you not just change the number in regedit?? do you need to run the Windows Experience Index?

    On my system the WEI would not complete in 8.0...  

    I don't know on Windows 8, but on Windows 7, it would change back to "1" after you rebooted.

    Did you try running WinSAT from the command prompt?

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  4. Anonymous
    2013-10-21T15:32:09+00:00

    Ive not tried, as I lost my system last night (8.1)

    ive had to go back to 8.0 as I luckily had a system image backed up ... my 8.1 died after I changed the size of the system partition....

    here is a overview of my problem and other 8.1 users also !! http://answers.microsoft.com/en-us/windows/forum/windows8_1-system/cant-backup-81-using-system-image-backup-error/90e39029-ff0d-4318-8701-5f7078198cd0

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