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These files used to be found on a CD- or DVD-ROM, which came with a new computer or could be acquired separately. An ISO file for the desired operating system that contains all setup files that you need for installation.If the drive is already being used, make sure that it doesn’t contain any important or indispensable data. To obtain a high working speed (or enable the creation of a portable operating system), the selected drive should support the standard USB 3.0. A USB drive with at least 4GB of storage (for a 32-bit operating system) or at least 8GB (for a 64-bit system).
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The drive also serves as a “clean” reinstallation of the operating system if it’s become too slow as a result of accumulated garbage.Įxperienced computer experts and IT professionals also like to use a bootable USB as a “ portable operating system” (the concept is known as “Windows2Go” for Microsoft). You can also use a bootable USB to upgrade Windows 7 or 8 to Windows 10 if a previously automatic upgrade doesn’t function correctly. Even if no such PC emergency is present, it’s a good idea to have a Windows image for data backup on a USB-capable storage medium (could also be an external hard drive) on hand.
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