How can I add a second OS? (details inside)
How can I add a second OS? (details inside)
In my understanding of dual boot, the device will prompt you about the operating system you wish to load at startup or power-on. How regularly do you need to access the second OS? It would be better if you didn’t just pick a specific drive when presented with that choice. Selecting C:\ essentially instructs the system to replace the main operating system.
Windows comes first, which is why it tends to mess with the bootloader—it’s simpler to reinstall Windows in GRUB than to recover anything after locking out Ubuntu. When both OSes are installed, you’re in a dual-boot setup. If you prefer manual control, unplug all drives except the one for Ubuntu, install there, and adjust boot devices as needed.
I usually adjusted the default settings in BIOS and pressed the boot menu button during startup if I needed a different one.