readyboost

When i try readboost with a 512mb which i formatted and gave me 480mb it is still telling me that the device does not have enough memory space to use readyboost so how can i reslove this issue i also used a 1gb formatted memory stick in there as well and it gave me the same result!! can any one help

Can you posibly post here the vendor and the model for your drive?
-- Regards, Yuriy
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When i try readboost with a 512mb which i formatted and gave me 480mb it is still telling me that the device does not have enough memory space to use readyboost so how can i reslove this issue i also used a 1gb formatted memory stick in there as well and it gave me the same result!! can any one help