This afternoon i wanna share such us simply indicator applet that's lets you to do a save remove Flash Drive, Portable Hard Drive or other USB Device. An `indicator-usb` applet will give you information of  current connected device and then do a save remove device from there, so your data is totally write to your Flash Drive/Portable Hard drive and you will not lose any data.
Ubuntu indicator-usb applet
Ubuntu safe remove device
How to install It ?
You can download
`indicator-usb` installer here, Install the deb, and then add `indicator-usb` to your Startup Applications.