Download a Linux Mint ISO from the official site, verify its checksum and signature, then write the image to a USB drive with USB Image Writer on Mint or Etcher on Windows, macOS, and other Linux distributions. The write operation erases the selected drive, so back up its contents and confirm the target device before starting.
What you need before creating the USB
You need three things: a Linux Mint ISO image, a writable USB flash drive, and a computer on which to create the media. Linux Mint describes USB as its easiest installation method. The resulting drive can start a computer in either EFI or legacy BIOS mode, allowing you to test Mint or launch its installer without changing the internal disk first. See the Linux Mint installation guide for the current media-creation procedure.
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- A reliable internet connection for the ISO download and, if desired, signature verification.
- A USB drive whose existing contents you have backed up. Writing an ISO replaces the selected drive’s contents.
- Administrator permission on the computer used to write the image.
- The target computer’s firmware boot menu or setup key, which varies by manufacturer.
Linux Mint’s current documentation does not publish a universal minimum USB capacity, speed requirement, or creation-time estimate. Do not infer a required capacity from an ISO’s file size; choose media that is large enough for the specific ISO and leave room for the imaging tool to write it.
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Pick an edition
The official edition guide describes three desktop editions:
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| Edition | How Mint describes it | When it may fit |
|---|---|---|
| Cinnamon | The most popular edition | A conventional choice for a modern desktop computer |
| MATE | Lower-resource and able to run faster on older computers | Older or less powerful hardware |
| Xfce | Lightweight | Hardware where minimizing desktop overhead is a priority |
From Linux Mint 20 onward, the installation guide says that releases are 64-bit only. Check the target computer before downloading; a 32-bit-only machine cannot boot these current releases. The Choose the right edition page explains the desktop differences, while the official download pages provide the current files.
Download from the official page
Use Linux Mint’s official edition and download page, or begin at the project’s documentation page and follow the current download links. Release pages change, so check the edition and release shown on the site immediately before downloading. The Linux Mint 22.3 MATE page accessed in October 2026 lists that ISO at 2.9GB. That is the size of that particular image, not a published minimum for USB media.
Save the ISO to a location you can find easily, such as your Downloads folder. Do not open it as though it were an ordinary archive; the imaging step must write the complete ISO image to the USB device.
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Verify the ISO before writing it
Verification protects against an incomplete download and helps confirm that the file came from the project rather than being altered in transit. Linux Mint separates two checks:
- A SHA256 checksum confirms that your local ISO is byte-for-byte identical to the published image.
- A GPG signature on the checksum list helps establish that the checksum list itself is authentic.
Perform both checks when possible. A matching checksum alone proves only that your file matches the checksum value you used; it does not establish who published that value.
Verify in Linux Mint
- In the file manager, right-click the downloaded ISO and choose Verify if that option is available.
- Alternatively, open a terminal and run
mint-iso-verify yourfile.iso, replacing the filename with the actual ISO name. - To calculate the checksum directly, run
sha256sum -b yourfile.iso. - Compare the displayed SHA256 value with the value in
sha256sum.txtsupplied by the mirror. - Verify the GPG signature for that checksum list as described in Mint’s ISO verification guide. The mirrors provide both
sha256sum.txtandsha256sum.txt.gpg.
The command must reference the exact downloaded filename. A single-character difference in the checksum means you should not write the image; download it again and repeat the check.
Verify on macOS
- Open Terminal and change to the directory containing the ISO, or use its full path.
- Run
shasum -a 256 yourfile.iso. - Compare the result with the published SHA256 value in
sha256sum.txt. - Follow the Mint guide’s instructions to verify the GPG signature on the checksum list before relying on the value.
Verify on Windows
The current Mint guide directs Windows users to a Mint forum tutorial for the Windows-specific verification process. Start from the official verification page rather than downloading an unrelated checksum utility from an unknown source. The goal remains the same: calculate SHA256 for the ISO, compare it with sha256sum.txt, and verify the GPG signature on that list.
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Create the USB in Linux Mint
Linux Mint includes USB Image Writer, so no separate imaging application is required.
- Insert the USB drive and wait for Mint to recognize it.
- In the file manager, right-click the ISO and choose Make Bootable USB Stick. If you prefer the application menu, open Menu > Accessories > USB Image Writer.
- In USB Image Writer, select the verified ISO file if it is not already selected.
- Choose the correct USB device from the destination list. Check its size and label against the physical drive; do not rely on position alone.
- Click Write and approve the warning. Wait until the writer reports completion before removing the drive.
- Safely eject the USB from the desktop before unplugging it.
The writer creates a bootable image rather than copying the ISO as a normal file. Afterward, the drive may appear with partitions or a filesystem layout that looks different from an ordinary storage stick. That is expected.
Create the USB from Windows, macOS, or another Linux distribution
For these systems, the current Linux Mint installation guide recommends Etcher as the cross-platform route. Download it from the application’s legitimate source, install it, and then follow this sequence:
- Open Etcher.
- Select the verified Linux Mint ISO as the image.
- Select the USB drive as the target. Disconnect other removable drives temporarily if you are unsure which entry is correct.
- Click Flash! and authorize the operation when the operating system asks.
- Wait for writing and verification to finish, then eject the USB using the operating system’s safe-removal control.
Etcher’s interface may display the drive by model, capacity, or operating-system path. Match those details to the physical device before confirming. The imaging step is destructive on the selected drive regardless of which operating system runs Etcher.
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Linux users can write an ISO with a raw-disk utility such as dd, but it is an advanced option rather than the simplest recommendation. A typo in the destination can overwrite an internal disk immediately and without a recycle bin. The Linux Mint community tutorial explicitly warns that the destination must be the whole device, for example /dev/sdx, not a partition such as /dev/sdx1. The letter x is only an example; identify the actual device on your computer before issuing any command.
- Back up the USB contents first.
- Identify the removable drive by capacity and device name, not by guesswork.
- Use the whole-device path, not a partition path.
- Unplug other removable storage to reduce the chance of selecting the wrong destination.
- Do not interrupt the write until the command has completed and the data has been flushed.
If you are not already comfortable identifying Linux block devices, use USB Image Writer or Etcher instead. The older Linux Mint community USB tutorial is useful for its overwrite and device-selection warnings, but its older Windows-tool references are superseded by the current installation guide’s Etcher recommendation.
What changes on the USB after imaging?
An ISO is a disk image, so the writer reproduces its boot information and filesystem layout on the device. It is not the same as dragging the ISO into a folder. A file-copy operation leaves the USB as ordinary storage and normally gives firmware nothing bootable to start. Image-writing tools may create a layout that your regular operating system displays as several partitions or with an unfamiliar label. Do not reformat it immediately just because it no longer looks like a blank storage stick.
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The operation also removes the previous partition table and files on the selected device. If the drive contains documents, photos, encrypted volumes, or another installer, copy those items elsewhere before you click Write or Flash!. The USB can be reused later, but restoring it as ordinary storage requires repartitioning and formatting; that is separate from creating the Mint installer.
Choose the safest creation method
| Computer used to create media | Preferred method | Why |
|---|---|---|
| Linux Mint | USB Image Writer | Built into Mint and available from the ISO context menu or Accessories menu |
| Windows, macOS, or another Linux distribution | Etcher | Current Mint guidance gives the same three-step image, target, and Flash workflow across these systems |
| Linux terminal | dd only for experienced users |
Offers direct raw-device writing but makes selecting the wrong disk especially dangerous |
There is no need to install several imaging programs. Pick the route that matches the computer in front of you, verify the ISO first, and concentrate on identifying the destination correctly. A generic writable USB drive is the only physical product needed; Mint does not specify a required brand, transfer speed, or model.
Boot the target computer from the USB
- Insert the completed USB drive into the computer where you want to run or install Mint.
- Restart the computer. As it starts, open the one-time boot menu or firmware setup.
- Select the USB storage device. Common firmware keys include Escape, F1, F2, F8, F10, F11, F12, and Delete, but the correct key is model-specific. Watch the first logo screen or consult the computer manufacturer’s documentation.
- If the menu offers two entries for the same USB, choose the EFI/UEFI entry for a modern installation unless you have a specific reason to use legacy BIOS mode.
- Confirm the selection and wait for the Linux Mint boot menu.
Mint’s ISO supports both EFI and BIOS boot modes. The Boot Linux Mint guide covers the general process; the related EFI and boot-options pages explain firmware-specific choices.
If the computer always starts its existing operating system, enter firmware setup and move USB storage ahead of the internal drive for this boot, or use the one-time menu instead of changing the permanent order. Also confirm that the USB was written as an image; merely copying the ISO file onto the drive will not make it bootable.
Troubleshoot a USB that will not boot
Recheck the image and rewrite the drive
A failed checksum, an interrupted write, or selecting the wrong file can produce a drive that is visible but not bootable. Verify the ISO again, rewrite it with USB Image Writer or Etcher, and safely eject it before retrying. If possible, test a different USB port; some firmware handles ports connected through hubs less reliably during startup.
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For a Linux Mint 22.3 system that will not boot, the release page says to try an HWE ISO. Hardware Enablement (HWE) images can provide newer hardware support than the standard image. Use the HWE option only when the regular 22.3 image has a boot problem, and download the matching image from the official 22.3 release page.
Use compatibility mode for graphics problems
If the boot process reaches a black screen or graphics fail, select the boot menu’s compatibility mode when available. Mint documents nomodeset as a further option for hardware that cannot initialize its normal graphics mode. These settings are troubleshooting measures, not required defaults for every computer. Once Mint starts, identify the graphics issue before choosing a permanent configuration.
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Handle a Secure Boot Violation conditionally
If an EFI computer reports Secure Boot Violation after installation, Mint documents two conditional approaches: restart the installation with an internet connection and leave the third-party software option unselected, or disable Secure Boot in firmware. Firmware menus differ, and disabling a security feature changes the computer’s protection model, so use the remedy that fits your environment. The EFI guidance is in the official EFI documentation.
Separate writing failures from boot-menu problems
If Etcher or USB Image Writer reports an error, do not assume the firmware is at fault. Check the ISO checksum, make sure the USB is not mounted by another application, and repeat the write to the intended device. If the tool completes successfully but the machine does not list USB, inspect firmware settings and try a direct USB port rather than a hub. If the machine lists the USB but returns to the internal operating system, select the USB entry again or use the one-time menu key earlier in the startup sequence.
USB or DVD: which installation medium should you use?
| Medium | Advantages | Limitations |
|---|---|---|
| USB drive | Linux Mint’s easiest installation method; reusable and suitable for modern computers | Writing erases the selected drive; some older firmware may not boot USB reliably |
| Blank DVD | An alternative when the computer cannot boot from USB | Mint warns that optical discs are slow to use and burning them is prone to errors |
Choose USB first unless the target computer specifically requires optical media. If you must use a DVD, burn the ISO as a disc image rather than copying the ISO file onto the disc, then verify the burn before restarting.
Safety checklist before you click Write or Flash
- Downloaded the ISO from an official Linux Mint page.
- Confirmed the edition, release, and 64-bit requirement match the target computer.
- Compared the ISO’s SHA256 checksum with the published value.
- Verified the GPG signature on the checksum list when possible.
- Backed up every file on the USB drive.
- Selected the removable USB by its model and capacity, not by assumption.
- Closed applications that may be using the drive.
- Waited for the imaging tool to finish and safely ejected the media.
- Know the target computer’s one-time boot-menu key.
After these checks, the USB is ready to boot Linux Mint for a live session or to start the installer. Release names, download links, and ISO sizes can change, so consult the current official pages again whenever you create new installation media.
Frequently Asked Questions
Can I simply copy the Linux Mint ISO file to a USB drive?
No. Copying the ISO as an ordinary file does not create the boot information the computer needs. Use USB Image Writer, Etcher, or an advanced raw-device method instead.
Will creating the Mint USB erase my existing files?
Yes. Writing the image replaces the selected USB’s contents and partition layout. Back up anything you need and verify the destination drive before confirming.
What USB size does Linux Mint require?
The current Mint media guide does not publish a universal minimum capacity or speed. Choose writable media large enough for the exact ISO you downloaded; the 22.3 MATE ISO listed on the October 2026 edition page is 2.9GB, but that figure is not a stated minimum.
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Which Linux Mint edition should I download?
Cinnamon is the most popular edition, MATE is described as lower-resource and suitable for older computers, and Xfce is lightweight. Choose according to the target hardware and desktop preference.
How do I know my ISO is safe to use?
Calculate its SHA256 checksum and compare it with the value in Mint’s published sha256sum.txt. For stronger authenticity checking, verify the GPG signature on that checksum list as well.
What if my computer does not show the USB in its boot menu?
Confirm that the image-writing tool completed, safely eject and rewrite the drive if necessary, try another direct USB port, and use the computer’s model-specific one-time boot key. Mint media supports both EFI and BIOS modes.
When should I try an HWE ISO?
For Linux Mint 22.3, the release page recommends trying the HWE image when the regular image will not boot. It is a conditional troubleshooting option, not a requirement for every installation.
What is compatibility mode or nomodeset for?
They are boot options for graphics hardware that cannot initialize normally. Try compatibility mode first when available, then nomodeset if needed; do not use either as a default when ordinary booting works.
Is dd better than Etcher or USB Image Writer?
It is not simpler or safer for most readers. dd can write directly to a whole device, but choosing the wrong path can overwrite an internal disk. Use the graphical tools unless you already understand Linux device paths.
What can I do after the USB boots?
You can start a Linux Mint live session to test the computer or launch the installer. If you receive a Secure Boot Violation in EFI mode, follow Mint’s conditional guidance about reinstalling with internet access and without selected third-party software, or changing Secure Boot settings.
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Download the current Mint ISO from Linux Mint, verify both its SHA256 checksum and GPG signature, then write it with USB Image Writer or Etcher. Confirm the removable target carefully because imaging erases it, safely eject the finished drive, and select USB from the target computer’s boot menu. Use HWE, compatibility mode, or other EFI remedies only when the documented boot problem calls for them.
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