boot issue

I tried to get kali dual booted off a usb flash, to install it to am ssd later on, on a windows pc, with ubuntu installed on the host os drive. But I'm stuck in grub. Sub section Memdisk I think, I'm pretty noob with command lines at the moment so I'm not smart enough to get out of here. See...

Please help me saving my data on my hard drive. And please excuse me as I'm not an expert in Ubuntu but can follow instructions. I have a lenovo ideapad 330 with 1 tera hdd that have dual boot of windows 10 and Ubuntu, Ubuntu is my main OS. Last month I've encountered repeated problems while...

The system initially booted up correctly after installing Wi-Fi and NVIDIA drivers and restarting. But after running updates with sudo apt update && sudo apt upgrade, and then restarting once more, the system is now getting stuck during boot.