NTFS USB disk not recognized by Windows

I has a similar case descripben in this article:

https://social.technet.microsoft.com/Forums/windows/en-US/1ba097f6-8a0b-43d8-a826-928458c4ba15/change-drive-letter-and-paths-greyed-out-cant-assign-drive-letter?forum=w7itprohardware

Disk data has been restored and a new ntfs  partition has been created using fdisk. But windows was unable to mount this drive even though it was readable by the system.

This helped me solve this case:

1. cmd

2. Type diskpart.

3. Type

to see a list of disks.

4. Type

(where 1 is the disk you want).

5. Type

to see partitions.

6. Type

(where 3 is the volume you want).

7. Type

(where F is the drive letter).

8.

to remove readonly flag