Your system will deal with it just like a virtual optical disc drive. How to Mountīy mounting the ISO file, you can access the contents of the file like files and folders. After that, you can follow one of the three options: mount, burn or create a USB drive. Why is it used?īasically, all the big companies like Microsoft now distribute software like Windows 8 or 10.1 in an ISO file format. That means gone are the times where you need to carry CDs to install the software. Based on ISO-9660, it can copy the exact contents found in a disc such as CD or DVD. Use the command fdisk -l to list disk devices and identify the correct USB device to use.An ISO file format is the most common format for disc images. Where /dev/xxxx is the USB device, and yyyy.iso is a Red Hat Enterprise Linux installation image. Using the ISO to create a Bootable USB DriveĪlternatively, to create bootable USB installation media, write the ISO image to the USB device using the dd utility.Įxample: ~]# dd if=yyyy.iso of=/dev/xxxx status=progress If the iso image is larger than that, then a single-layer, dual-sided (9.5GB), dual-layered, single-sided (7.5GB) or BluRay DVD (25GB) will need to be used to hold the iso image. NOTE: A standard single-layer, single-sided DVD can hold up to 4.7GB. Use the command cdrecord -devices to list disc-writing devices and identify the correct device to use. To create (burn) a CD or DVD, write the ISO to the disc on command line using the cdrecord utility.Įxample: ~]# cdrecord -v -dev='/dev/xxxx' yyyy.iso Prerequisiteĭownload the ISO installation image as described in Downloading the installation ISO image. This article describes how to create a Red Hat Enterprise Linux installation CD, DVD, or USB.
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