Make sure windows was shut down all the way. Normally when you shutdown windows, it only hibernates and it locks it’s partitions to prevent editing. I tried installing Zorin for a family member recently, and it couldn’t install until I booted back into windows and shut it down fully.
To shutdown fully, in windows you need to either hold shift while clicking the shutdown button, or open the run box and run the command shutdown -s -t 00
No, I straight up had two different installation media’s fail until I went back and shut down windows fully. I’ve never run into that before on an install before.
First I tried ZorinOS, and it would fail to even boot into the live environment. I tried multiple times and even made a new install media. Then I tried fedora silverblue, it would get into the install environment but couldn’t do any kind of partitioning etc to the drive. I then rebooted to windows, shut it down fully, and tried again. This time fedora could edit the drive partitions, and zorin could load the live environment and install.
Previously I’ve had issues with shared drives being locked by windows, but this was the first time I’ve ever had an install fail because windows wasn’t shutdown fully. I don’t usually dual boot these days either though (I was setting up this computer for family) so I figured maybe something had changed with newer versions of windows or device security.