unmounted  
adjective uk/ˌʌnˈmaʊn.tɪd/ us/ˌʌnˈmaʊn.t̬ɪd/
  (COMPUTER)      
 computing specialized(磁盘或磁盘驱动器)卸载的 
(of a disk or disk drive) no longer available for use on a computer
  Once unmounted, a CD-ROM can be automatically ejected. 一旦卸载,CD-ROM 可以自动弹出。 
  - More examples
 - The program closes the control files of the unmounted database.
 - Ideally, all backups would be performed after working hours on unmounted filesystems.
 - Once unmounted, the virtual drives are no longer available or visible to the search engine.