I had Ubuntu 16.x and Kali on my drive. Now I want to delete Kali and instead install Windows 10.
Accidentally I deleted Ubuntu in the Windows 10 installer, and closed it hoping it wouldn't save the changes. But it did and now I am getting the GRUB rescue screen. It shows dev/sda when selecting a partition in the Ubuntu installation GUI
Can I somehow restore the Ubuntu partition or is it gone from the partition table and the system for ever?
You can try to use Testdisk from a live Ubuntu session. This is simple console tool but very powerful.
Install it by running
sudo apt install testdisk
and run it by typing
sudo testdisk
Choose Create at the first screen and follow on screen instructions.
if it fails to find your partition with Quick Search method then try Deeper Search.
Here is a step by step guide to Testdisk from the developer of the program. Read that first if you are unsure about some options.
