Hi this is not a simple task but there is a chance for you to recover the data. mostly this has happen because of the mount point being corrupted somehow, it can be fixed and database can be repaired .
ping me with more details
regards
Hi,
I have been working as a Linux Server administrator for 5 years. I have good knowledge about ntfs,ext4 partitions. and handled the tools to repair the partiion tables eg:fsck
Please accept my proposal. Have a good time
You need to run specialized software in order to do the recovery.
The NTFS filesystem has a second partition table in the middle, so there might still be a chance if you do not joke around and decide to do serious job.