Use your external memory as RAM

(i)Go to System, by right click on My computer icon and then selecting properties.
(ii)Now Select Advance System Properties
(iii)Select Advance Tab and click on Settings under performance.
(iv)In performance option dialog box , select advanced tab and click on change.
(v)remove the tick sign, click on drive character you want to use and mark on System Managed
Now save the properties and restart your pc with memory attached.
NOTE:Format your memory as FAT32 before using it.