Unmount a drive when it was not cleanly unmounted.

[1] http://askubuntu.com/questions/170852/ntfs-partition-not-clearly-unmounted-please-help
[2] http://www.wikihow.com/Unmount-a-Drive



[1] When ubuntu boots, I get this error: "The NTFS partition was not cleanly unmounted. This probably indicates that the system was not shut down properly. Please run "chkdsk /r" from Windows; once that is fixed you should be able to resume the installation. Press OK to reboot."


E:/chkdsk /r

when being asked whether check disk on start up, choose 'No'. 

Finally, WinXp no longer ask to check E: drive for consistence and 'Ghost' is able to mount E: drive.