Boot Sequence Simulator - Fake BIOS, POST and Linux Boot Screen

A free, browser-based boot sequence simulator that recreates the text a computer prints while it starts up: the BIOS power-on self-test (POST), a scrolling Linux kernel boot log, a systemd-style startup with green [ OK ] markers, or a friendly "system booting" screen.

What is a boot sequence?

The boot sequence is everything that happens between pressing the power button and reaching a usable system: the BIOS/UEFI runs a power-on self-test, detects memory and drives, then hands control to a bootloader and the operating-system kernel, which prints driver and service messages as it initializes. This tool imitates those screens — none of it is real and nothing is detected on your machine.

Features

• Four boot styles: BIOS/POST, Linux kernel log, systemd [ OK ] startup, generic "system booting"
• Adjustable scroll speed and four console color themes (green, amber, cyan, white)
• Optional infinite loop for a continuous backdrop
• Fullscreen mode and a hide-controls key for clean capture
• No install, no signup, runs entirely in the browser

Perfect for

• Film, video, and stream props that need a believable startup screen
• Loading or "stand by" backdrops for presentations and live events
• Cyberpunk and hacker-themed scenes