I have a 16gb USB key. I'm unable to use it properly between Windows 7 and Ubuntu. I formatted it as an NTFS drive in Windows (did a full format, not the 'quick' option). Once I write to it with Ubuntu however and load it back up in Windows, I get a
"This disk needs to be formatted before it can be used" message from Windows. It seems to read and write okay in Ubuntu though. What's going on? It seems like everytime I use Ubuntu to write something to it, Windows can no longer read the drive.
I'm on 12.04. I eject the drive before physically removing it.