This is one very common failure of USB hard drives, when users try to connect the USB hard drives to PC by USB cable, users get the messages below:
You need to format the disk in Drive I: before you use it. Do you want to format it?
After this message comes out, users cannot enter the drive and view the files inside at all.
The engineer removed the external enclosure and inside the enclosure it is one Seagate 5400.6 hard drive.
Momentus 5400.6 320GB
The user connected the hard drive to DFL-SRP USB3.0 for data extraction, the drive to get ready directly.
The good news was that the engineer went to file extraction menu and all the folders and files are listed under DFL device.
All data is out by connecting to Dolphin SRP data recovery tools! Any question is welcome to firstname.lastname@example.org or add Dolphin skype ID: dolphin.data.lab