With your USB drive plugged in, right-click the Start button in Windows 8.1 and choose Device Manager.
In the next window, click Disk drives, right-click the name of your USB drive, and choose Properties. Another window opens: Click the Policies tab, then click the Quick removal radio button, and finally select OK. Close the device manager window and you're done.
There's still a small risk that data on a USB drive can become corrupted with write caching disabled, but it does allow you to just yank out the USB drive without ejecting it first. — at least in Windows. If you use the same drive on a non-Windows system you'll still have to eject it properly or suffer the wrath of the Windows error message.
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