Stripping away unused drivers (.config) and other "bloats" can get you surprisingly far.

But 150ms? That's boot time for dos or minix maybe (tiny kernels). 1s sure.

	▲	balou23 an hour ago \| parent \| next [-]
		FreeBSD did some work to boot in 25ms. Source: https://www.theregister.com/2023/08/29/freebsd_boots_in_25ms...
	▲	deivid 2 hours ago \| parent \| prev [-]
		You can do <10ms. I was working to see if I could get it under 1ms, but my best was 3.5ms