i have a 4 LUN USB 2.0 card reader built in NB.

[Symptom]There has a different behavior of safely remove hardware machine between windows 7 and windows 8.
Windows 7: After copying data to the SD card, you can ejecta single card and leave another of another type still fully functional.

Windows8: Only can eject USB device. when you ‘Safely Removed’ the device, you lost access to all ports in your card reader until you logged out and back in again. (behavior seems like WinXP)

How can user eject Removable Disk in Safely Remove Hardware icon like the behavior under windows 7?

Your suggestions are highly valued!