How To Fix Cannot Mount Volume Error In Ubuntu

This error usually occurs with desktops having multiple operating systems especially ubuntu and windows . If these 2 operating systems share the same drive say an NTFS drive then once you turn on ubuntu after shutting down windows you may face this error . This error also occurs on external hard drives . Here are a few ways you can fix this error and be successfully able to mount your hard disk :

SAFELY REMOVE HARDWARE
This is the first solution , all you need to do is plug in back the hard disk to a windows installation and use the Safely Remove Hardware Option to remove your hard disk . Then reboot back to ubuntu and ubuntu should easily be able to mount your hard disk.The following screenshot shows you how to safely remove hardware.Your external hard disk would usually show up as "USB mass storage device" . So just click on STOP and you would get a popup saying "You may now safely remove your hardware" . Then just reboot to ubuntu and ubuntu should be able ot mount your hard disk.

FORCE MOUNT IN UBUNTU
This is your second option , incase safely remove hardware does not work , or you dont have access to a windows machine . The command to force mount is usually already present in the error message box . The usual syntax for this command(To be typed in the Terminal) is sudo mount -t ntfs-3g /dev/sda3 /media/PRASH -o force .
Here /dev/sda3 is the disk name . If you are unsure you can find out your disk name by going to the Terminal and typing sudo fdisk -l . /media/PRASH is the location to where you want /dev/sda3 to be mounted . If you get an error while mounting , it means you may need to create a folder /media/PRASH first and then do the mounting.To create a folder all you need to do is type sudo mkdir /media/PRASH .


NOTE: You would need to replace /dev/sda3 and /media/PRASH accordingly to your situation.