Officially, no. The installer wipes the entire disk. There are unofficial scripts to force dual-booting (using rEFInd ), but they break after OS updates. Do not attempt unless you are an expert.
If you specifically need a raw image file (similar to an ISO) because you are on a Linux machine or prefer to use third-party flashing software like Rufus, you can bypass the Chrome extension. download chrome os flex iso
Built-in protection against malware and automatic background updates. Sustainability: Reduces e-waste by keeping older hardware in use longer. How to Install It in 3 Steps Officially, no