What Linux Mint is and why you might install it
Linux Mint is a free operating system that works like Windows or macOS — it runs on your computer and lets you open programs, browse the web, and manage files. The main difference is that Mint is built on Linux, which means it's free, doesn't slow down over time the way Windows sometimes does, and gives you more control over how your computer works. Many people install it on older computers to make them run faster, or on new computers because they prefer how it works.
Installing Mint means replacing your current operating system entirely, or running it alongside Windows or macOS on the same machine. This guide covers the most common route: wiping your hard drive and installing Mint as your only operating system. If you want to keep Windows or macOS, you'll need to research dual-boot setup separately, as that process is more complex.
Before you start, understand that this process will erase everything on your computer. Back up any files you need — photos, documents, anything you want to keep — to an external drive or cloud storage first. Once you begin, there's no going back without that backup.
Key Takeaways
- You need a USB drive with at least 4 GB of space, a computer with at least 2 GB of RAM, and about 20 GB of free hard drive space for Mint to run well.
- Download the Mint image file from the official Linux Mint website, then use a tool like Balena Etcher to write it to your USB drive — this creates a bootable installer.
- Restart your computer and boot from the USB drive by pressing a key like F12, Esc, or Del during startup, then follow the on-screen installer to format your hard drive and install Mint.
- After installation completes, remove the USB drive and restart — your computer will boot into Linux Mint for the first time, and you can then install programs you need.
- The whole process takes 30 to 60 minutes depending on your internet speed and hard drive, and you'll need to be comfortable following step-by-step instructions without technical support during the install.
Gather what you need before starting
You'll need three things: a USB drive, a second computer or device to download files, and the computer you're installing Mint on. The USB drive must be at least 4 GB — 8 GB is safer and costs very little. You can use any USB drive; the installer will erase it, so don't use one with files you want to keep.
Your computer needs at least 2 GB of RAM to run Mint smoothly, though 4 GB is better. Check how much RAM you have by right-clicking "This PC" or "My Computer" on Windows and selecting Properties, or by clicking the Apple menu and choosing About This Mac on macOS. You also need at least 20 GB of free hard drive space — Mint itself takes about 10 GB, and you'll want room for programs and files afterward.
Write down the exact model of your computer or motherboard if you have it — you may need this information if something goes wrong during boot. Most laptops have the model printed on the bottom or inside the battery compartment.
Download Linux Mint and create a bootable USB drive
Go to linuxmint.com on the computer you're using right now (not the one you're installing on). Click the Download button and choose the version labeled "Cinnamon" — this is the most popular and easiest version for people new to Linux. You'll see a list of download locations; pick one close to your country. The file is about 2 GB, so it may take 10 to 30 minutes depending on your internet speed.
While that downloads, plug your USB drive into this computer. Download Balena Etcher from balena.io/etcher — it's a free tool that writes the Mint image to your USB drive in a way that makes it bootable. Install Etcher the same way you'd install any other program on your computer.
Once the Mint file finishes downloading and Etcher is installed, open Etcher. Click "Select image," find the Mint file you just downloaded (it will be named something like linuxmint-21.3-cinnamon-64bit.iso), and click it. Then click "Select target" and choose your USB drive — be very careful here, because Etcher will erase whatever drive you select. Click "Flash" and wait for the progress bar to finish. This takes 5 to 15 minutes. When it's done, safely eject the USB drive.
Boot your computer from the USB drive
Plug the USB drive into the computer you're installing Mint on. Restart that computer completely — don't just put it to sleep. As soon as it starts up, before the Windows or macOS logo appears, press a key repeatedly to enter the boot menu. The key varies by computer: try F12, Esc, F2, or Del. If none of those work, search online for "[your computer model] boot menu key" — you'll find the right one quickly.
You'll see a menu with a list of devices. Look for an entry that mentions your USB drive — it might say "USB Drive," "Removable Media," or the brand name of your USB drive. Select it and press Enter. The computer will load from the USB drive, and after 30 to 60 seconds you'll see the Linux Mint desktop with an "Install Linux Mint" icon on the left side.
If you don't see a boot menu and the computer starts normally into Windows or macOS, restart again and try a different key. If you're still stuck, restart once more and look very carefully at the screen during startup — sometimes the boot menu prompt is small text that appears for only a second or two.
Run the installer and format your hard drive
Double-click the "Install Linux Mint" icon on the desktop. A window will open asking what language you want to use — pick your language and click Continue. The next screen asks about keyboard layout; select yours and click Continue again.
You'll reach a screen titled "Installation type." It will show your hard drive and ask what you want to do with it. If you see an option that says "Erase disk and install Linux Mint," that's the one you want — it will wipe your entire hard drive and install Mint fresh. Click that option, then click Install. A warning will appear saying this will erase everything on your hard drive. Read it carefully. If you're sure you've backed up everything you need, click Continue.
The next screen asks for your location — pick the city or region closest to you, as this sets your time zone. Then you'll create a user account: pick a username (something simple like your first name), a computer name (what your computer will be called on a network), and a password. Write down your password somewhere safe — you'll need it to install programs later. Click Continue.
Wait for installation to complete
The installer will now format your hard drive and copy Mint onto it. You'll see a progress bar and a list of tips about Linux Mint. This step takes 10 to 30 minutes depending on how fast your hard drive is. Do not turn off your computer or unplug anything during this time — let it finish completely.
When the progress bar reaches 100%, a message will appear saying the installation is complete and asking you to restart your computer. Remove the USB drive from the computer, then click "Restart Now." The computer will shut down and start back up.
On the next boot, you won't see the Mint desktop with the installer icon — instead, you'll see a login screen asking for your username and password. Type the username and password you created during installation, and press Enter. After a few seconds, you'll see the full Linux Mint desktop for the first time.
Set up Mint and install programs you need
The first time you log in, Mint may ask if you want to update the system — click "Install Updates" and let it finish. This downloads the latest security patches and program updates. It may take 10 to 20 minutes depending on your internet speed.
Once updates are done, you're ready to use Mint. Click the menu button (usually in the bottom left corner, labeled with a grid or leaf icon) to see all the programs already installed. Mint comes with a web browser, email client, file manager, and basic office programs. To install more programs, click the menu and look for "Software Manager" or "App Store" — search for what you want, click it, and click Install. You'll be asked for your password; type it and the program will install.
If something doesn't work or you have questions, the Linux Mint community forums at linuxmint.com/forums are very active and helpful. Search for your problem first — someone has usually solved it before.
Troubleshooting common problems during installation
If your computer won't boot from the USB drive, the most common cause is that you selected the wrong boot key. Restart and try F2, F10, or Del if F12 and Esc didn't work. Some computers require you to hold the key down continuously rather than pressing it repeatedly. If you're still stuck, search "[your computer brand] boot from USB" — you'll find the exact steps for your model.
If the installer starts but crashes or freezes partway through, your USB drive may be corrupted. Go back to the computer with Etcher, erase the USB drive completely using your operating system's built-in tools, and write the Mint image to it again. Make sure you're using a different USB port if possible.
If you see an error about "no bootable device found" after installation, the installer may not have written the bootloader correctly. This is rare, but if it happens, you'll need to start over: boot from the USB drive again, run the installer, and this time pay close attention to any options about bootloader location — usually you can just accept the default.
Frequently Asked Questions
Can I install Linux Mint without erasing Windows?
Yes, but it requires a more complex setup called dual-boot, which is beyond this guide. You would need to shrink your Windows partition first, then install Mint on the free space. Search for "dual-boot Windows and Linux Mint" and follow a guide specific to your Windows version, as the steps vary. This is riskier than a clean install because a mistake can damage your Windows installation.
What if my computer is too old to run Linux Mint?
Mint runs on very old hardware — computers from 10 or 15 years ago often work fine. If your computer has less than 1 GB of RAM, it will be slow. If it has less than 512 MB of RAM, Mint may not install at all. Check your RAM first; if it's very low, you might need to add more RAM (which costs $20 to $50 for older computers) or choose a lighter Linux version like Linux Lite.
Do I need to buy anything to use Linux Mint?
No. Linux Mint itself is completely free, and most programs you'll want to install are also free. You don't need to buy a license or pay a subscription. The only cost is the USB drive if you don't already have one.
What happens if I make a mistake during installation?
If you realize you made a mistake before clicking the final "Install" button, just close the installer and start over. If you've already clicked Install and the progress bar has started, you cannot safely stop it — let it finish, then reinstall if something went wrong. This is why backing up your files first is so important.
Can I go back to Windows after installing Linux Mint?
Yes, but only if you have a Windows installation disk or USB drive and your Windows product key. You would boot from the Windows installer and reinstall Windows the same way you installed Mint. If you don't have these, you cannot easily go back. This is another reason to be certain before you start.