How can I recover data from external HDD that computer sees but doesn’t mount?

Swapnil L March 25, 2014
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My 1TB external hard disk is going undetected in my computer and it doesn’t show up in Disk Management. I get the option for safely remove. I think it has turned from NTFS to RAW because in properties it shows used space full and free space empty at the same time.
Please help and guide me to recover my data which is about 400GB!

  1. Hovsep A
    March 25, 2014 at 7:46 pm

    1. Go to run and type cmd then right click on it and choose run as administrator
    2. type DISKPART and hit enter
    3. type : LIST DISK. This will show you all the connected disk with the offline one.
    4. Now select the offline disk using the next command SELECT DISK wheredisk_no is the offline disk number which you can get from step 3 result.
    5. Now you have selected the offline disk. Now enter command ONLINE DISK.


    you can check here for a guide with testdisk