How to Use Rufus: The Beginner's Guide (First Bootable USB, GPT vs MBR, and the Boot-Menu Check)
CodexFuse Team · 2026-10-30T06:47:17.065Z · 11 min read
Rufus is the free, portable way to make a bootable USB drive on Windows. This beginner guide walks through install-free download, the ISO write, the GPT-vs-MBR decision, and booting from the finished drive.
Learning how to use Rufus takes about ten minutes of reading and fifteen minutes of doing. Rufus is a free, portable Windows utility that writes an ISO image — a Windows installer, a Linux distribution, a rescue disk — onto a USB flash drive and makes that drive bootable, so a PC can start from it instead of its own hard drive. You do not install Rufus; you run it straight from the downloaded file.
Before you touch the START button, two things decide whether your first try works or wastes an afternoon: picking the right USB drive (it gets fully erased, so check its real size with a USB drive capacity checker first), and picking the right partition scheme for the PC that will boot from it. This guide covers both, step by step, with the Windows 11 options explained honestly.
What is Rufus?
Rufus is a free, open-source Windows program that creates bootable USB drives from ISO and IMG disk images. It formats the drive, writes the image, and sets up the boot records, so the USB stick behaves like a DVD installer from the disc era — plug it in, boot from it, and the installer or live system loads. The current release is Rufus 4.15 (June 2026), a roughly 1.9 MB download that runs on Windows 8 and later with no installation, and it is distributed only from the official rufus.ie site.
What do you need before you start?
You need exactly three things: a USB drive of at least 8 GB, the ISO file of the system you want, and a Windows PC to run Rufus on. That is the whole shopping list — no cable, no second drive, no license key for Rufus itself, which costs nothing.
The USB drive gets completely erased during the write, so back up anything on it first. For a Windows 10 or 11 installer, 8 GB is the practical minimum; Linux ISOs often fit on 4 GB, but an 8 GB drive gives you headroom and lets you add persistence later.
The ISO is the disk image of the operating system or tool you want to boot. Download Windows ISOs from Microsoft's own download pages and Linux ISOs from the distribution's official site (Ubuntu ISOs come from ubuntu.com). A copied ISO file sitting on a USB drive does not boot — the drive must be written bootable, which is exactly what Rufus does.
How do you download Rufus safely?
Download Rufus only from the official site, rufus.ie, to avoid tampered copies. The Download section lists several builds: the standard Windows x64 executable and a portable build (both about 1.9 MB), plus x86 and ARM64 variants. For almost everyone, the standard or portable 64-bit build is the right pick — they work identically once running; the portable one simply runs from anywhere and leaves no trace on the host PC.
If you are unsure whether your PC is 64-bit, open Settings > System > About and check the System type field. Save the executable to your Downloads folder and double-click it. Windows may ask for administrator permission — Rufus needs it to write to the drive's boot sectors, so click Yes.
How to use Rufus to make a bootable USB: the 7 steps
The whole process follows the same seven steps no matter which ISO you are writing:
- Insert the USB drive into the PC running Rufus. Back up its contents first — everything on it will be erased.
- Select the device. In the Device drop-down at the top, pick your USB drive. If several drives are connected, verify by drive letter and size before going further — writing to the wrong drive destroys its data.
- Select the ISO. Click SELECT next to Boot selection, browse to your ISO file, and open it. Rufus reads the ISO and auto-configures the partition scheme, target system, and file system from it.
- Check the partition scheme. Leave Rufus's auto-detected value unless you know it is wrong: GPT for a modern UEFI PC, MBR for an older BIOS machine. (The next section has the full decision rule.)
- Set the volume label (optional). Name the drive something like "Windows 11 Install" or "Ubuntu Live" so you recognize it later.
- Click START. Rufus warns that all data on the drive will be destroyed — click OK. Writing usually takes 5 to 15 minutes depending on the drive speed and ISO size.
- Wait for READY. When the status bar at the bottom reads READY, the drive is bootable. Close Rufus and leave the drive connected for the next step.
GPT vs MBR: which partition scheme should you choose?
Choose GPT if the target PC is from about 2015 or later (UEFI firmware); choose MBR if it is an older machine running legacy BIOS. The scheme must match how the target PC boots — a GPT drive will not boot a BIOS-only machine, and an MBR drive is the wrong choice for a modern UEFI system. When in doubt, GPT is correct for nearly every Windows 10/11 install done today.
| Situation | Pick | Why |
|---|---|---|
| PC from ~2015 or later, Windows 10/11 target | GPT + UEFI | Modern firmware expects GPT; Secure Boot requires it |
| Old PC, legacy BIOS, no UEFI option | MBR + BIOS | The only scheme a BIOS-only machine can boot |
| You don't know the target machine | GPT | Right for almost every PC sold in the last decade |
| Linux live USB for rescue use on mixed hardware | MBR | Boots on the widest range of old and new machines |
| Ubuntu ISO (per its install guide) | GPT for UEFI, MBR for BIOS | Match the scheme to the target's firmware mode |
Rufus normally detects the right scheme from the ISO itself, so most beginners can leave it alone. Change it only if the finished drive refuses to boot on the target machine — that is the classic symptom of a scheme mismatch.
How do you boot from the USB drive?
Restart the PC with the drive still connected, press the boot-menu key during startup, and select the USB drive. The key is usually F12, F2, Esc, or Delete depending on the motherboard brand; the correct key typically flashes on screen during the first seconds of startup. If the machine boots straight into its old system, you pressed the key too late — restart and try again.
Two ways to get there: the one-time boot menu (fastest — just picks the drive for this boot) or the BIOS/UEFI settings, where you move the USB drive to the top of the boot order. If the drive is not offered as a boot option at all, first confirm the partition scheme matches the firmware mode (the table above), then check that Secure Boot is not blocking an unsigned medium.
Rufus vs Ventoy vs Balena Etcher: which one fits your job?
Rufus is the best pick for a single Windows installer or one-off bootable drive; Ventoy wins when you maintain many ISOs on one stick; Balena Etcher is the simplest cross-platform flasher for Linux media. They are all free, but they solve different problems, so picking by workload beats picking by popularity.
| Rufus | Ventoy | Balena Etcher | |
|---|---|---|---|
| Runs on | Windows only | Windows and Linux | Windows, macOS, Linux |
| Multi-ISO on one drive | No (one image per write) | Yes — copy ISOs on, pick from a boot menu | No |
| Windows 11 hardware-check bypass | Yes (TPM, Secure Boot, RAM, account) | No | No |
| Settings control | Deep (scheme, file system, cluster size, bad-block check) | Minimal | Minimal (three clicks) |
| Best for | One Windows or Linux installer, full control | A technician's multi-tool rescue drive | Simple Linux/SD-card flashing on any OS |
If you only ever make one bootable drive at a time, Rufus's speed and control make it the default. If you are the person friends call when a PC dies — Windows 10 here, a Linux live session there, a firmware updater somewhere else — Ventoy's copy-ISOs-onto-the-drive model saves you from re-imaging the stick every week. On a Mac, Rufus is not an option at all, which is where Etcher or the command line takes over.
Can Rufus make a persistent Linux USB? And what about the Windows 11 bypass options?
Yes — for Debian and Ubuntu-based ISOs, Rufus shows a "Persistent partition size" slider after you select the ISO. Dragging it reserves space where the live system saves files, installed apps, and settings across reboots; leaving it at 0 makes a standard live USB that forgets everything on shutdown. If the slider does not appear, your ISO does not support persistence in Rufus, so plan for a plain live session instead.
When you write a Windows 11 ISO, Rufus opens a Windows User Experience dialog offering to skip the TPM 2.0 and Secure Boot checks, skip the 4 GB RAM requirement, remove the online Microsoft account requirement, create a local account, and disable data collection during setup. These are real options, not recommendations: bypassing the requirements on an unsupported PC can leave you without future Windows updates, so use them for test machines and lab installs, not as a way to dodge requirements on your daily driver.
When should you use the Media Creation Tool instead?
Use Microsoft's Media Creation Tool when you only need a plain Windows 10 or 11 installer and want the official, zero-decision path. It downloads the ISO and writes the drive in one flow with no settings to get wrong. Choose Rufus when you need a Linux live USB, a rescue disk, an older Windows version, persistence, or the Windows 11 customization options the official tool does not offer.
One safety habit applies whichever tool you use: after a successful boot, keep the drive labeled and stored somewhere you will find it. A bootable USB made today is the repair disk you will be grateful for the next time a PC refuses to start. If you make media regularly, our HandBrake beginner guide covers another free Windows workhorse in the same spirit, and the FFmpeg beginner guide picks up where installers leave off for media tasks — both live in the same system-tools family as this guide, alongside the Tailscale beginner guide for reaching those machines remotely.
Sources
- FDayTalk, "How to Use Rufus to Create a Bootable USB Drive on Windows" (published June 5, 2026) — full step walkthrough, Windows User Experience options, automount/USB-port troubleshooting, Media Creation Tool comparison.
- iLifeHacks, "How to Use Rufus to Create Bootable USB" (updated September 17, 2026) — download builds, the six-step flow, boot-menu keys, feature list.
- BECs, "How to use Rufus bootable USB | Create Bootable Windows USB (Step by Step)" — portable-app detail, GPT/MBR rule, boot-from-USB steps.
- EaseUS, "Rufus Review 2026" (updated May 20, 2026) — open-source/portable notes, GPT-vs-MBR guidance, Windows-only limitation.
- Ubuntu community docs, "Create a Bootable USB Drive" (updated October 2026) — Rufus steps for Ubuntu ISOs, ISO Image mode tip.
- GeeksDigit, "How to Create a Persistent Linux Installation on a USB" (2026) — Rufus persistent-partition slider behavior.
- AssistOuest, "What software should I use to create a bootable USB stick" (2026) — Rufus vs Ventoy vs Balena Etcher comparison points.
- WindowsForum, "Ventoy vs Rufus: Best Bootable USB Tool" (2026) — workload-based tool choice, Etcher Windows-ISO limitation.
- Rufus official site, rufus.ie — version 4.15 release (June 30, 2026), build sizes (~1.9 MB), Windows 8+ requirement, "Create bootable USB drives the easy way" tagline; checked October 30, 2026.
Frequently asked questions
Is Rufus free and safe to download?
Yes — Rufus is free and open-source, and the safe source is the official rufus.ie site. Avoid third-party download mirrors, which can bundle tampered copies. The download is about 1.9 MB and runs on Windows 8 or later.
Does Rufus work on Mac or Linux?
No. Rufus is Windows-only. On macOS use Balena Etcher or the command line; on Linux use the dd command, mkusb, or the distribution's own USB creator.
How big a USB drive do I need for Rufus?
At least 8 GB for a Windows 10 or 11 installer; 4 GB can work for smaller Linux ISOs. Whatever you use, everything on the drive is erased during the write — back it up first.
Why won't my PC boot from the Rufus USB drive?
The most common cause is a partition-scheme mismatch: use GPT for UEFI machines and MBR for legacy BIOS. Next, check you actually selected the USB drive in the boot menu (F12/F2/Esc/Del at startup), and confirm Secure Boot is not blocking the medium.
Can Rufus skip the Windows 11 TPM and Microsoft account requirements?
Rufus offers those options in its Windows User Experience dialog, but they are options, not recommendations — an unsupported PC may miss future Windows updates. Use them for test and lab machines, not to bypass requirements on your main computer.