Rufus download – yeah, it sounds kinda boring, but trust me, this little program is a lifesaver for anyone who’s ever messed with bootable USB drives. We’re diving deep into everything you need to know about getting, using, and troubleshooting this essential tool. From finding the legit download to creating bootable drives for Windows, Linux, or anything else, we’ve got you covered.
This guide is your one-stop shop for all things Rufus.
We’ll cover where to safely download Rufus, what versions are out there and which one’s right for you, and how to actually use the thing without bricking your USB drive (it happens!). We’ll also talk about security, alternatives, and troubleshooting – basically everything you need to know to become a Rufus pro. So grab your favorite beverage, settle in, and let’s get started!
Rufus Download Sources
Getting Rufus, the handy bootable USB creator, is pretty straightforward, but knowing where to get it safely is key. Downloading from the wrong place could expose your system to malware, so let’s look at the best options.Downloading Rufus from a legitimate source ensures you’re getting the genuine software and not a malicious copy. This is crucial for protecting your computer and data.
We’ll compare the official website to other potential download sites, outlining the security considerations for each.
Legitimate Rufus Download Sources
The most reliable way to download Rufus is directly from its official website. This guarantees you’re getting the authentic, virus-free version. Avoid unofficial sites or file-sharing platforms, as these often contain modified or infected versions of the software. The official website usually has clear download links and version information. You should always check for a digital signature or other verification methods to ensure the integrity of the downloaded file.
Official Website vs. Alternative Download Locations
The official website offers several advantages over other download locations. Firstly, it provides the latest version of Rufus, ensuring you have access to the newest features and security updates. Secondly, it guarantees the software’s authenticity, protecting you from potentially harmful malware. Thirdly, the official site usually provides detailed instructions and support documentation. Alternative download locations, such as third-party software repositories or file-sharing websites, often lack these assurances.
They may offer older versions, potentially insecure versions, or even malicious imitations. It’s generally best to stick with the official source.
Security Measures When Downloading Rufus
Before downloading Rufus from any source, always verify the website’s authenticity. Look for HTTPS in the address bar (the padlock symbol) indicating a secure connection. After downloading, scan the executable file with a reputable antivirus program before running it. This extra step helps to detect any potential malware hidden within the download. Be wary of websites offering Rufus alongside other software or bundled with unwanted programs; these are often signs of potentially malicious activity.
Finally, pay attention to the file size and checksum information (if provided on the official website) to confirm that the downloaded file is legitimate and hasn’t been tampered with.
Download Speed Comparison
It’s difficult to provide consistently accurate download speed data as it depends on various factors, including your internet connection, server load, and geographical location. However, we can illustrate a hypothetical scenario to show how this data might look:
| Source | Download Speed (MB/s) | Date Tested | Verification Method |
|---|---|---|---|
| Official Rufus Website | 2.5 | 2024-10-27 | Checksum verification |
| Major Software Download Site (Example) | 1.8 | 2024-10-27 | Antivirus scan |
| Unverified File-Sharing Site (Example) | 3.0 | 2024-10-27 | None (High Risk) |
| Mirror Site (Example – needs verification) | 2.2 | 2024-10-27 | Checksum verification and Antivirus scan |
Rufus Versions and Compatibility
Keeping your Rufus version up-to-date is crucial for optimal performance and security. Older versions might lack important bug fixes, security patches, and new features, potentially leading to compatibility issues or even system instability. This section details the latest versions and their compatibility with different operating systems.
Understanding Rufus version history helps you make informed decisions about which version to use, ensuring compatibility with your system and access to the latest features and improvements. Outdated versions can expose your system to vulnerabilities, while newer versions often include significant enhancements to the user experience and functionality.
Rufus Version History and OS Compatibility
The following list provides information on some of the latest Rufus versions. Note that the exact release dates and features can vary slightly depending on the specific build. It’s always best to check the official Rufus website for the most up-to-date information.
- Version 4.0 (Example): Released October 26, 2024 (example date). Supported Operating Systems: Windows 7, 8, 10, 11, and macOS (via Wine). Key features included improved UEFI support and enhanced security protocols.
- Version 3.21 (Example): Released June 15, 2024 (example date). Supported Operating Systems: Windows 7, 8, 10, and 11. This version focused primarily on bug fixes and improved stability, addressing issues reported in previous releases.
- Version 3.18 (Example): Released March 8, 2024 (example date). Supported Operating Systems: Windows 7, 8, 10, and 11. This release introduced minor UI improvements and enhanced compatibility with certain USB drives.
Implications of Using an Outdated Rufus Version
Using an outdated version of Rufus carries several risks. These include:
- Security vulnerabilities: Older versions may contain known security flaws that could be exploited by malware. Updated versions often include patches that address these vulnerabilities, protecting your system from potential threats.
- Compatibility issues: Newer operating systems or UEFI firmware versions might not be fully compatible with older Rufus versions. This can lead to creation failures, boot errors, or other problems when creating bootable USB drives.
- Lack of features: Newer versions of Rufus often include new features and improvements that are not available in older versions. This could limit your ability to create certain types of bootable drives or utilize advanced options.
- Performance issues: Older versions may be less efficient and slower than newer versions, especially when working with large ISO images or high-speed USB drives.
Rufus Download Process and Installation
Getting Rufus up and running is a pretty straightforward process. This section walks you through downloading the program and installing it on your system, along with some tips for troubleshooting any hiccups you might encounter. We’ll cover everything from the initial download to the final installation steps.
The entire process is generally quick and easy, taking only a few minutes. Remember to download Rufus from the official website to avoid any potential malware or corrupted files. Always double-check the download source to ensure you’re getting the legitimate version.
Downloading Rufus
Downloading Rufus begins by navigating to the official Rufus website. Once there, locate the latest stable release version. This is usually clearly indicated on the site’s main page. Click the download link corresponding to your operating system (Windows, typically). The download will begin automatically, and the download progress bar will show the download status.
You’ll typically see the file download into your browser’s default downloads folder, or you can choose a specific location if prompted.
Installation Steps
After the download completes, locate the downloaded executable file (usually a `.exe` file). Double-click the file to begin the installation process. The installation process is generally simple and self-.
Screenshot 1: The Rufus Executable
-This screenshot would show the downloaded Rufus executable file, likely named something like “rufus-x.x.x.exe,” where “x.x.x” represents the version number. The file icon would likely be a small, simple icon. The file would be highlighted, showing its location in the file explorer.
So, you’re all set with your Rufus download, right? Now, if you need to tweak any PDF instructions for that new bootable drive, you might want to check out a really handy online tool – the google pdf editor – it’s super easy to use. After you’ve made any edits, just get back to your Rufus download and continue with the process.
Screenshot 2: The Rufus Setup Wizard (Initial Screen)
-This screenshot would depict the initial window of the Rufus setup wizard. It would likely display a welcome message and possibly a brief overview of the software. Buttons like “Next” or “Install” would be visible.
Screenshot 3: License Agreement
-This screenshot would show the license agreement screen. The user would need to accept the terms and conditions before proceeding. Checkboxes for acceptance and buttons like “I Agree” or “Next” would be visible.
Screenshot 4: Choose Installation Location
-This screenshot would show the screen where the user can choose where to install Rufus. A default location is usually provided, but users can browse and select a different folder. A “Browse” button and a path display would be visible.
Screenshot 5: Installation Progress Bar
-This screenshot would show the progress bar indicating the installation’s progress. A percentage complete and potentially an estimated time remaining would be displayed.
Screenshot 6: Installation Complete
-This screenshot would show a message box confirming the successful installation of Rufus. A “Finish” button would allow the user to close the installer.
Rufus Download and Installation Flowchart
A flowchart would visually represent the download and installation process. It would start with “Navigate to Rufus Download Page,” followed by “Download Rufus Executable,” then “Locate Downloaded File,” then “Run Executable,” proceeding through steps such as “Accept License,” “Choose Installation Directory,” “Installation Progress,” and finally ending with “Installation Complete.” Each step would be connected with arrows to indicate the flow.
Troubleshooting Common Installation Issues
While Rufus installation is generally smooth, some issues might arise. Here are some common problems and their solutions.
- Problem: The downloaded file is corrupted. Solution: Re-download the file from the official website. Verify the file’s integrity using a checksum if available on the website.
- Problem: Insufficient permissions to install. Solution: Run the installer as administrator. Right-click the executable and select “Run as administrator.”
- Problem: Antivirus software interference. Solution: Temporarily disable your antivirus software during the installation process. Remember to re-enable it afterward.
- Problem: The installer fails to launch. Solution: Ensure you have the necessary prerequisites (like .NET framework, if required) installed. Try running the installer in compatibility mode for an older version of Windows.
Rufus Security Considerations
Downloading and using Rufus, while generally safe when obtained from the official source, carries inherent risks if you’re not careful. Getting the wrong version or downloading from a malicious site can expose your system to serious threats. Understanding these risks and taking preventative measures is crucial for maintaining your computer’s security.Downloading Rufus from an untrusted source exposes your system to a range of potential threats.
These include the risk of downloading a malicious executable disguised as Rufus, which could contain viruses, Trojans, ransomware, or other malware. Such malware could steal your personal data, encrypt your files, or even take control of your computer. Furthermore, a compromised Rufus download could contain backdoors allowing attackers remote access to your system. This is especially dangerous if you use Rufus to create bootable USB drives for installing operating systems, as a compromised installer could compromise the entire system during the installation process.
Verifying Rufus Integrity
Verifying the integrity of your Rufus download is paramount to ensuring you’re not running malicious software. The most effective method is to download Rufus directly from the official website and compare the downloaded file’s checksum (usually SHA-256) against the checksum provided on the official website. Checksums are cryptographic hashes that uniquely identify a file; any difference indicates that the downloaded file has been tampered with.
You can use a checksum utility (many are freely available online) to calculate the hash of your downloaded file and compare it to the official value. This process ensures that the downloaded file hasn’t been altered or replaced with a malicious copy. Discrepancies should be treated with extreme caution.
Securing Downloaded Files Before Execution
Before running any downloaded executable, including Rufus, it’s essential to take precautions to mitigate potential risks. First, always download the file to a location you can easily monitor, such as your desktop or downloads folder. Avoid running the executable directly from the download location; instead, move it to a more secure location. Consider scanning the downloaded file with a reputable antivirus program before running it.
This will help detect any malware that may be present. Finally, always run the executable with caution, observing its behavior carefully for any suspicious activity. If anything seems unusual or unexpected, terminate the process immediately and seek assistance from a security professional.
Recommended Security Practices When Using Rufus
Before listing specific practices, it’s important to emphasize that following these guidelines significantly reduces the risk of encountering security issues while using Rufus. These steps are designed to minimize vulnerabilities and protect your system.
- Only download Rufus from the official website.
- Verify the downloaded file’s checksum against the official checksum.
- Scan the downloaded executable with a reputable antivirus program before running it.
- Run Rufus with administrator privileges only when absolutely necessary.
- Be cautious about the ISO images you use with Rufus; only use trusted sources for operating system images and other bootable media.
- Regularly update your antivirus software and operating system to patch known vulnerabilities.
- Keep your computer’s operating system and software updated to the latest versions to benefit from security patches.
Rufus Usage Scenarios
Rufus is a powerful and versatile tool, far exceeding its simple appearance. It’s not just for creating bootable USB drives; it offers a range of functionalities beneficial for various computing tasks. From installing operating systems to creating rescue disks, Rufus provides a streamlined and efficient method for managing your bootable media.This section will explore several common use cases for Rufus, highlighting its capabilities in creating bootable drives for different operating systems and walking through the process for Windows 10 and Linux distributions.
Creating Bootable USB Drives for Various Operating Systems
Rufus supports a wide array of operating systems, making it a truly universal solution for bootable media creation. This versatility extends beyond just Windows; it also handles various Linux distributions, macOS, and even specialized operating systems like DOS. The key is selecting the correct ISO image and configuring Rufus appropriately for the target OS. For instance, creating a bootable USB for a Linux Mint installation requires selecting the Linux Mint ISO and choosing the correct partition scheme and target system type within Rufus.
The process is similarly straightforward for other operating systems, though specific settings may vary.
Creating a Bootable Windows 10 USB Drive Using Rufus
This process is remarkably simple. First, download the Windows 10 ISO file from Microsoft’s website. Then, insert a USB drive with sufficient capacity (at least 8GB is recommended). Open Rufus. Select the downloaded Windows 10 ISO file as the source.
Ensure the target system is set to “BIOS or UEFI-CSM” if you are unsure or using an older system, or “UEFI (non CSM)” for newer systems. Choose the appropriate partition scheme (usually GPT for UEFI and MBR for BIOS). Select the NTFS file system. Click “Start” and wait for the process to complete. Once finished, you’ll have a bootable Windows 10 USB drive ready for installation.
Remember to back up any important data on your USB drive before proceeding, as the process will erase all existing data.
Creating a Bootable Linux USB Drive with Rufus
The steps for creating a bootable Linux USB drive are very similar to the Windows 10 process. Begin by downloading the desired Linux distribution’s ISO image from the official website. Insert a USB drive. Open Rufus. Select the downloaded Linux ISO.
The important configuration choices here are the partition scheme (GPT for UEFI systems, MBR for BIOS systems) and the file system (usually ext4 for Linux). Rufus will often automatically detect the correct file system. If not, selecting ext4 is generally safe. Click “Start.” Once Rufus completes the process, you’ll have a bootable Linux USB drive ready to use for installation or live booting.
Again, remember to back up any data on your USB drive before starting the process.
Rufus Alternatives
Okay, so you’re looking for some alternatives to Rufus for creating bootable USB drives? There are a few other solid options out there, each with its own strengths and weaknesses. Let’s dive into a comparison to help you decide what might work best for your needs. It’s all about finding the right tool for the job, right?
Choosing the right tool depends heavily on your operating system, the level of customization you need, and your comfort level with command-line interfaces. Some tools offer a simpler, more intuitive graphical interface, while others provide more advanced options for power users. Let’s explore some of these alternatives and how they stack up against Rufus.
Alternative Bootable USB Creation Tools
Several tools offer similar functionality to Rufus, each with its own unique features and quirks. A direct comparison helps highlight their relative advantages and disadvantages.
| Tool Name | Key Features | Advantages | Disadvantages |
|---|---|---|---|
| BalenaEtcher | Cross-platform, supports various image formats (IMG, ISO, ZIP, etc.), verification feature to ensure image integrity, simple and intuitive interface. | User-friendly interface, excellent for beginners, cross-platform compatibility, image verification helps prevent errors. | Fewer advanced options compared to Rufus, might not be as fast as Rufus for some tasks. |
| UNetbootin | Supports multiple operating systems (Linux distributions, Windows, macOS), can create bootable drives from ISO images and other sources, works on various operating systems. | Wide OS support, ability to download and create bootable drives from online sources. | Interface can feel a bit dated, some users report occasional compatibility issues. |
| PowerISO | Commercial software, supports a vast array of image formats, allows for editing and creating ISO images, includes advanced features for ISO manipulation. | Powerful features for ISO management, wide format support. | Not free, steeper learning curve compared to Rufus or Etcher. |
| Win32 Disk Imager | Simple, lightweight tool for writing disk images to USB drives, focuses on a single core function. | Extremely lightweight, easy to use for its limited scope. | Limited functionality, lacks advanced features, only supports .img files primarily. |
Rufus vs. Alternatives: A Feature Comparison
Comparing Rufus to the alternatives reveals key differences in functionality and ease of use. While Rufus excels in its simplicity and speed for common tasks, other tools provide specialized features or broader compatibility. The “best” tool really depends on the specific needs of the user.
Ease of Use and Learning Curve
Rufus is generally considered very user-friendly, with a straightforward interface that requires minimal technical knowledge. BalenaEtcher also boasts a simple interface, making it ideal for beginners. Tools like PowerISO, however, have a more complex interface and require more time to master all their features.
Rufus Troubleshooting: Rufus Download
Okay, so you’re trying to use Rufus, and things aren’t going exactly as planned. Don’t panic! Rufus, while generally reliable, can sometimes throw curveballs. This section covers common problems and their solutions, helping you get back on track to creating your bootable USB drive. We’ll walk through some of the most frequent headaches and how to fix them.
Common Rufus Errors and Solutions
Let’s dive into some typical errors users encounter when working with Rufus and the solutions to resolve them. Understanding the error message is key to finding a solution. Often, the error message itself provides valuable clues.
- Error: “Image file is not a valid ISO image.” This usually means Rufus can’t recognize the image file you’ve selected. Double-check the file extension (.iso) and ensure the file itself isn’t corrupted. Try downloading the ISO again from a trusted source. If the issue persists, try a different ISO file to rule out problems with the image itself.
- Error: “Write error” or similar. This often points to problems with the USB drive itself. Try a different USB drive, ensuring it’s properly connected and has enough free space. Sometimes, a failing USB drive will show this error. Consider testing the USB drive with other tools to verify its functionality.
- Error: “The selected drive is not a valid removable drive.” Rufus is trying to write to a drive that isn’t recognized as removable media. Make sure you’ve selected the correct USB drive. Carefully check the drive letter to avoid accidentally formatting the wrong drive – this is crucial to avoid data loss!
- Rufus hangs or becomes unresponsive. This can happen due to a variety of reasons, including insufficient system resources (RAM, processing power), a corrupted ISO image, or a problem with the USB drive. Try closing unnecessary programs, restarting your computer, and using a different USB drive. If the problem continues, consider checking your system’s resources to see if they meet the minimum requirements for Rufus.
Troubleshooting Bootable Drive Creation Failure
Creating a bootable drive that doesn’t boot is frustrating. Let’s break down how to address this. The root cause can vary, but systematic troubleshooting can often pinpoint the problem.
- Verify the ISO image: Download the ISO again from a reputable source to rule out corruption. Check the checksum (MD5 or SHA) if available to confirm file integrity.
- Check the USB drive: Use a different USB drive. Ensure the drive is properly formatted (usually FAT32 or NTFS, depending on the operating system) and has sufficient space. A faulty USB drive is a frequent culprit.
- BIOS/UEFI settings: Make sure your computer’s BIOS or UEFI is configured to boot from the USB drive. This usually involves changing the boot order in the BIOS settings. The exact steps vary depending on your motherboard manufacturer.
- Rufus settings: Double-check the settings in Rufus, particularly the partition scheme (MBR or GPT) and target system (BIOS or UEFI). Incorrect settings can prevent the drive from booting.
Troubleshooting USB Drive Formatting and Partitioning Issues
Problems with formatting and partitioning can prevent Rufus from creating a bootable drive. Here’s how to approach these issues.Sometimes, Rufus might struggle to format or partition a USB drive, especially if the drive is damaged or has unusual formatting. This is where careful investigation is key.
- Use Disk Management (Windows): If Rufus fails to format, use Windows’ built-in Disk Management tool to format the drive. This can sometimes resolve formatting issues that Rufus encounters. Right-click the Start button, select “Disk Management,” and then format the drive from there.
- Try a different USB port: Sometimes a USB port might be malfunctioning. Try a different USB port on your computer to rule out a faulty port as the cause.
- Check for physical damage: Examine the USB drive for any physical damage, such as bent pins or cracks in the casing. Physical damage can interfere with the drive’s ability to be formatted or used.
- Consider using another tool: If all else fails, consider using a different formatting and partitioning tool like EaseUS Partition Master or MiniTool Partition Wizard. These tools offer more advanced features and might be able to resolve stubborn issues.
Rufus System Requirements
Running Rufus, like any software, requires a certain level of system resources to function properly. Insufficient resources can lead to slowdowns, crashes, or even prevent the program from running at all. Understanding the minimum and recommended specifications ensures a smooth and efficient experience.This section details the system requirements for Rufus, the impact of insufficient resources, and the potential consequences of using it on an incompatible system.
We’ll also provide a table summarizing these requirements.
Minimum and Recommended System Specifications
The minimum system requirements represent the bare minimum needed to run Rufus, while the recommended specifications provide a more optimal experience. Exceeding these recommendations generally results in smoother performance, especially when working with larger ISO images or performing more intensive operations.
| Component | Minimum Requirement | Recommended Requirement | Impact of Insufficient Resources |
|---|---|---|---|
| Operating System | Windows 7 (SP1) or later, including Windows 10, 11 | Windows 10 or 11 (64-bit) | Older operating systems may lack compatibility with newer features and could experience instability. 64-bit systems are highly recommended for better performance with larger ISO files. |
| Processor | 1 GHz processor | 2 GHz or faster processor | A slower processor will lead to noticeably longer processing times, especially during the writing process to a USB drive. Complex operations might become significantly delayed or even fail. |
| RAM | 1 GB RAM | 4 GB RAM or more | Insufficient RAM can lead to significant slowdowns, especially when working with larger ISO images. The program might become unresponsive or crash due to memory limitations. For example, creating a bootable USB drive with a large Windows 10 ISO on a system with only 1GB RAM would be extremely slow and prone to errors. |
| Storage Space | Sufficient space to hold the ISO image | Sufficient space to hold the ISO image plus additional temporary files | Lack of sufficient space could prevent Rufus from downloading or creating the bootable USB drive. The process might fail due to disk space limitations. |
| USB Drive | A USB flash drive with sufficient capacity for the ISO image. | A USB 3.0 or higher drive for faster transfer speeds. | Using a slow or damaged USB drive can lead to prolonged writing times, errors during the creation process, and potential data corruption. For instance, a very old USB 1.1 drive may take hours to write a large ISO, and may be more prone to failures. |
Consequences of Running Rufus on an Incompatible System
Attempting to run Rufus on a completely incompatible system (e.g., a Mac or Linux machine) will simply not work. The program is designed specifically for the Windows operating system and requires the Windows API to function. Using Rufus on an unsupported OS will result in an error or the program failing to launch. Even on supported Windows versions, using a system significantly below the minimum requirements could lead to unpredictable behavior, including crashes, data corruption, and failed boot drive creation.
Rufus Community Support and Resources
Getting stuck with Rufus? Don’t panic! A thriving community exists to help you navigate any issues you encounter. Leveraging the collective knowledge and experience of other users can significantly speed up your problem-solving process and often provides solutions you might not find in official documentation.Finding the right support channel can make all the difference. While official documentation is a great starting point, engaging with the community often unveils creative workarounds, nuanced solutions, and the benefit of shared experiences.
The community can provide a quicker response time than waiting for official support channels, particularly for less common problems.
Official Support Channels, Rufus download
The official Rufus website is your first stop. While it may not have a dedicated forum, the website itself often contains troubleshooting guides, FAQs, and release notes that can address many common problems. Check for updated documentation, as solutions and workarounds often get added over time. Look for a “Support” or “FAQ” section—these sections are typically well-organized and contain answers to frequently asked questions.
Unofficial Support Channels and Community Forums
Many unofficial forums and online communities discuss Rufus. These can be invaluable resources, offering peer-to-peer support and often a quicker response time than official channels. Users often share their experiences, troubleshooting tips, and workarounds for various problems, including those not explicitly addressed in the official documentation. The diversity of experiences within these communities is a huge asset.
For example, a user might have encountered a specific issue with a particular hardware configuration and posted a detailed solution, saving others hours of frustration.
Effective Online Search Strategies for Rufus Solutions
When searching online for solutions, be specific. Instead of simply searching “Rufus problem,” try using more precise s related to your specific error message or issue. For instance, if you’re getting a “write error,” search for “Rufus write error USB drive model X” (replacing “model X” with your actual USB drive model). Including the specific error message, the Rufus version you are using, and your operating system often yields more relevant results.
Utilizing quotation marks around specific error messages can help refine your search.
Reputable Websites and Forums for Rufus Support
While a centralized, official forum may not exist, several reputable websites and tech forums often feature threads and discussions regarding Rufus. Searching these sites for “Rufus” combined with your specific problem can be fruitful. Remember to always verify the credibility of the source and the information provided before implementing any suggested solutions. Look for forums with active communities and moderators to ensure you’re getting reliable information.
Many large tech communities, such as those found on Reddit, often have dedicated subreddits or threads where users can discuss Rufus and troubleshoot issues together.
Last Recap
So, there you have it – a comprehensive guide to navigating the world of Rufus downloads and usage. From securing your download to troubleshooting those pesky errors, we’ve covered the essentials. Remember, always download from trusted sources, verify file integrity, and back up your data before making any major changes. Now go forth and create those bootable drives like a boss! Happy flashing!
Quick FAQs
Is Rufus safe to use?
Yes, when downloaded from the official website. However, downloading from untrusted sources poses significant security risks.
What if Rufus crashes during the creation of a bootable drive?
Try a different USB drive, check your system resources, and ensure your USB drive isn’t faulty. You might also need to try a different Rufus version or alternative tool.
Can I use Rufus on a Mac?
No, Rufus is a Windows-only application. You’ll need a different tool for creating bootable drives on macOS.
How often should I update Rufus?
It’s a good idea to keep Rufus updated to benefit from bug fixes and new features. Check the official website for the latest version.
What if my USB drive isn’t showing up in Rufus?
Make sure the USB drive is properly connected and that your system recognizes it. Try restarting your computer. Check Device Manager (Windows) to see if there are any driver issues.
