It can be especially useful for cases where: you need to create USB installation media from bootable ISOs (Windows, Linux, UEFI, etc.) you need to work on a system that doesn't have an OS installed. Using Rufus, you will be able to turn any USB memory stick into a bootable device and install any operating system from it without the need for an optical drive. Rufus is a utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc.
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Within OS X Utilities, choose Reinstall OS X. Prepare a clean external drive (at least 10 GB of storage). The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks. What's more, it cannot copy the data stored on a physical disc without creating an image first. Find what is Rufus and what are best alternatives of Rufus These are UNetbootin, Etcher, Deepin Boot Maker and others. Install older OS X onto an external drive. What's more, it allows you to copy any ISO disc image onto the memory stick. It allows you to convert any USB memory stick into a bootable device. Etcher vs Rufus Uninstall Glossary Knowledge Base Download Etcher for Windows, Mac & Linux V.1.5.111. All that's left to do is to configure the computer's BIOS to accept booting from USB memory devices. These settings are all that's required to make the USB memory stick bootable. Unfortunately, Rufus only supports ISO files and cannot copy data stored on physical discs without creating an image first. After completing this step, one should select the ISO disc image that will be copied onto the memory stick. After launching the application, the user will first need to select the USB memory device which he would like to make bootable. The program does not need installing and it's enough to run the executable downloaded from the Internet. This Windows application allows you to make any USB memory stick completely bootable and allows you to copy any disc image to it, no matter how large it is.
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The problem is how to convert a regular disc image into a bootable USB memory stick. Thus, you will also be able to install it much faster than using an optical disc, as the reading speed for USB flash devices is extremely high. In this situation, it would be a good idea to install the desired operating system from a USB memory stick. If you want to install Windows on your Mac or reinstall and older version of macOS on your Mac, creating a bootable USB allows you to do so even if you don’t have the original installation disk.
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But there are times when installing an operating system from an optical media is just not possible, for example when we are talking about laptops or tablets which don't have an optical device. Rufus for Mac does not exist but there are some great alternatives to Rufus on Mac to create a bootable USB drive. Most people use CD and DVD discs to install an operating system into their computers, no matter if we are talking about Windows, Linux or Mac.