before making a bootable PenDrive with Rufus first let's discuss.

What is Rufus?

Rufus is a free and open-source portable application for Microsoft Windows that can be used to format and create bootable USB flash drives or Live USBs. It is developed by Pete Batard of Akeo Consulting.

History

Rufus was originally designed as a modern Open Source replacement for the HP USB Disk Storage Format Tool for Windows, which was primarily used to create DOS bootable USB flash drives. The first official release of Rufus, version 1.0.3 (earlier versions were internal/alpha only, was released on December 11, 2011, with originally only MS-DOS support. Version 1.0.4 introduced FreeDOS support and version 1.1.0 introduced ISO image support. Until 1.2.0, two separate versions were provided, with one for MS-DOS and one for FreeDOS. UEFI boot support was introduced with version 1.3.2, localization with 1.4.0 and Windows To Go with 2.0.

Features

1. Rufus supports a variety of bootable .iso files, including various Linux distributions and Windows installation .iso files, as well as raw disk image files (including compressed ones). If needed, it will install a bootloader such as SYSLINUX or GRUB onto the flash drive to render it bootable.
2. It also allows the installation of MS-DOS or FreeDOS onto a flash drive as well as the creation of Windows To Go bootable media.
3. It supports formatting flash drives as FAT, FAT32, NTFS, exFAT, UDF or ReFS file systems.
4. Rufus can also be used to compute the MD5, SHA-1 and SHA-256 hashes of the currently selected image.

Now let's discuss how to create bootable USB using Rufus.

Steps for bootable USB.

Note: remember to plugin your USB before following the steps for making bootable USB.

to create bootable USB do the following

1. Launch this file rufus-2.8p.exe.
2. you will get user acount control message which says yes or not. simply click on yes button.
3. After you have clicked on yes button wait for the setup to launch.
4. after the setup launches use your tab key to find device combo box.
5. once you hear this window you can see the name of the USB which you have connected. for e.g. in my case it is hp(f:)(8gb) where the hp is the name of the PenDrive and f is the letter assigned to the drive and 8gb is the size of the pendrive. whatever Pendrive you connect to your pc Rufus will tell the name of the USB in device combo box and also the size as mensioned above in e.g.
6. if you have two USB connected to your PC it will tell you the name of both USBsS. but if you have only one USB just simply use tab key to go to this option format option combo box iso image. remember if in combo box if dd image is selected remember to select iso image by using your up aero.
7. press tab key to find this format option click to select an image.
8. press spacebar on this option click to select an image. it will ask you for the file. select the file as per your choice.
9. use your tab key to find start button option. once you get this option just click on this button by pressing spacebar.
10. it will give you a format warning. simply press ok button.
11. when you have press ok button. just minimise the window for a while and again come back to Rufust window and use your aero keys to read the status of the files being written on USB.
12. wait for 10-15 minutes depending on your processor speed for the process to complete.
13. when you hear 100% use your tab key to find close button. simply click on that button by pressing spacebar.
14. your Rufus software window automatically gets closed when you click on close button.
15. you have successfully make your PenDrive bootable.