How to unmount an USB flash drive?

Discussion in 'Lenovo IdeaTab A2109 Technical' started by a2109a, Jan 28, 2013.

  1. a2109a

    a2109a Member

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    I connected an USB flash drive with an OTG-cable to the A2109A. The flash drive is mounted, but how do I unmount it? There should be another way than doing it in a shell.

    Code:
    root@android:/ # mount | grep storage                                                                                        
    
    /dev/fuse /storage/sdcard0 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
    
    
    /dev/block/vold/179:49 /storage/sdcard1 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
    
    
    /dev/block/vold/8:1 /storage/usbdrive vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
    Code:
    root@android:/ # umount /storage/usbdrive
    Code:
    root@android:/ # mount | grep storage
                                                                                     
    /dev/fuse /storage/sdcard0 fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
    
    
    /dev/block/vold/179:49 /storage/sdcard1 vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
     
  2. leeshor

    leeshor Senior Member

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    Look in settings - storage and see if the option to unmount is there.
     
  3. a2109a

    a2109a Member

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    Yes there is an unmount option there, but it reboots the tablet and afterwards it is mounted again. So it is useless. It is better to turn off the tablet and remove the flash drive.

    Honestly, if you aren't reading from or writing to the drive I would just remove it.
     
    Last edited by a moderator: Jan 28, 2013
  4. arbarnhart

    arbarnhart Senior Member

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    I used the option in settings the first time I did this, but I have been just removing it since then with no problem.
     
  5. sid9921

    sid9921 Member

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    Its very simple drag down the notification panel and click on "USB mass storage connected" under ongoing section
     
  6. Music

    Music Senior Member

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    In the old days, you needed to reboot the device after connecting a peripheral, and before disconnecting it. The OS usually closes any connections to the device before shutting down, so that IMO, would be the safest way to go. Otherwise, contact the developer of your application and report the problem- it shouldn't be rebooting just from unmounting the OTG device.
     

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