Recovery with TestDisk was attempted first. Find files with TestDisk and PhotoRecįor testing TestDisk and PhotoRec 7.2, an unmountable 16GB SanDisk Cruzer Blade USB thumb drive (opens in new tab) with files of various types was connected to a standard USB 2.0 port on a Dell G5 5505 SE laptop (opens in new tab) running Windows 10.
A recovered partition image can be checked in TestDisk using the terminal. This works in largely the same way as the CLI tool, with the options displayed in a single window rather than a step-by-step series of commands. disk SanDisk SandDisk Cruzer 8.02 /dev/sdbPhotoRec also has a graphical user interface (GUI) available to make photo recovery easier (Image credit: CGSecurity)
Use the lsscsi command to determine where the faulty drive is mounted (/dev/sda in this ~ # lsscsi. We need to remedy this, so that both are OK. Typically, Boot Sector will be Bad, and Backup Boot Sector will be OK. Uses the left/right arrow keys to navigate. If no data is missing, press q (quit). Review your data to ensure none of your data has been lost. Hightlight each partition and press p (print). If the drive is not being used to boot an Operating System, press the left/right arrow keys to toggle the partition type to P (Primary). At the begining of each parition, just after the > will be a character. If your only did a Quick Search, and some of your data is missing, do a Deeper Search. After finding the partition which has the data, press q (quit). Use the left/right arrow keys to navigate. We want find the partition which has our data, and we want to ensure no data has been lost. Highlight each partition and press p (print). After Quick Search or Deeper Search, at least one partition should be listed highlighted green. After quick search has completed, if message No partition found or selected for recovery is displayed, hightlight Deeper Search and press enter. This this screen shot, the FAT16 P (primary) partition is listed twice. This implies a corrupted filesystem. Typically, the partition 1 will be listed twice. 
By default, the partition type for the faulty disk will be highlighted.
The next prompt in TeskDisk lists the partition types. 
Note: If the faulty drive is not listed, boot into BIOS, and ensure the motherboard detects the faulty drive.
Highlight the faulty drive and press enter. In the first prompt, highlight Create and press enter. Click here to create a bootable USB ISO using Universal USB Installer (UUI). If you are unable to boot into Windows, you will need to make a bootable flash drive. 
If you have more than one disk, and you are able to boot into windows, you can download test disk from. If using Linux, use the apt-get or yum command to install TestDisk. TestDisk is a software program which attempts to find and fix filesystem issues with a faulty drive.
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