Volume Bitmap error on USB Hard Drive

I have WDTV Live with latest firmware, every time after a USB hard drive is plugged into WDTV, Windows 7 complains file system error, and chkdsk fixes Volume Bitmap error (see msg below), other than that everything else is normal, no file corruption.

Correcting errors in the Volume Bitmap.
Windows has made corrections to the file system.

Is there a way to Safely Remove the USB drive from WDTV?

Yes, that’s what the EJECT button on the remote is for.

that worked, missed that on harmony remote, just don’t understand why poweroff doesn’t do a reject?!