My son accidentally tried to install Ubuntu 20.04.1 over a Windows 11 system. Installation has crashed with message ‘creating ext4 file system’. Windows 11 boot stick can’t identify any partitions, so my only other option appears to be hard disc replacement!
Using Ubuntu from a DVD (test mode) I have formatted my hard disc as NTFS, the system shows my drive as formatted with NTFS, but can't install Windows 11 and it says there is no partition!
I've tried loading diskpart, but it won't run from the Windows 'troubleshooting' command prompt.
I think I need a bootable USB stick with some way of identifying the hard disc and formatting/creating volumes/partitions so that I can install Winodws 11.
I'm not a software expert and need simple guidance!
Thanks in advance :-)