Create a Bootable USB Flash Drive and installing OS using the Flash Drive

Steps to Create Bootable USB Flash Drive using command prompt with using with full command line lines or installing to a new system and using Power ISO

Create a bootable Windows USB Stick:

Items you require are readily available, provided you also have an internet connection, which you have since you are reading this guide online at talk of the web.

• A USB Drive which must have minimum space of 4GB available

(If you want to make windows bootable drive then I guess 2GB USB is enough)

• Download Power ISO which you can use in trial mode

(You can get a premium copy of power iso also if you want to make further Bootable USB’s after the trial period expires)

• Get an ISO copy of the windows, you can purchase one from Microsoft or get the other way around, which you are thinking right now! But make certain that you simply must have an ISO file of windows. 

Steps to make Bootable USB Drive using Power ISO:

• Install Power ISO into your windows powered machine. 

I haven’t tried power iso inside my macOS, The power iso version of mac, as well as Linux, is also available on the download site, if you are at mac then theoretically you can also make a bootable USB drive of windows using mac os x also and at the same time, you can make that using Linux also!
Go on and give it a try!

• After getting power iso installed on your machine, just run it and if you haven’t purchased the power iso for your windows then run it as trial since it will also allow you to make a bootable USB.
• After running power iso, just go to Tools >> Create Bootable USB Drive
• A dialogue box will pop up, which will take the path of the iso file, browse and give the path of iso file of windows. After that just select your USB drive.
• Select a writing method to be USB-HDD and click on Start.
• This will start writing to USB disk and depending upon your system’s speed the USB disk will be created.

To create a Bootable USB Flash Drive Command Prompt

• Insert a USB flash drive in computer USB Port
• Press Windows+R to Type the “Run” box. in search box
• Type “cmd” into the box and then press Ctrl+Shift+Enter to run the command as an administrator
• Open a Command Prompt window as an administrator. Type "diskpart".
• In the new command line window that opens, to determine the USB flash drive number or drive letter, at the command prompt, type list disk, and then click ENTER.
• The "listdisk" command displays all the disks on the computer.

Note: the drive number or drive letter of the USB flash drive.

• At the command prompt, type "select disk x", where x is the drive number or drive letter of the USB flash drive, and then click ENTER.
• Type "clean", and then click ENTER. This command deletes all data from the USB flash drive.
• To create a new primary partition on the USB flash drive, type creates partition primary and then click ENTER.
• To select the partition that you just created, type "select partition 1", and then click ENTER.
• Use the “active” command to make said partition appear active, or validated.
• To format the partition, type format "FS=NTFS" quick, and then click ENTER.
• Use the assign command to assign a drive letter to the USB drive. Afterwards, it will show up as a drive under My Computer.
• Use the COPY "C:\win.iso" "x:\win.iso" the extracted contents of the Windows 10 ISO to the USB drive

Important: If your server platform supports Unified Extensible Firmware Interface (UEFI), you should format the USB flash drive as FAT32 rather than as NTFS. To format the partition as FAT32, type format FS=FAT32 quick, and then click ENTER.

Installing Windows using USB Stick:

• To that you need to go to BIOS setup, from there you need to select the bootable devices order, there just select the USB disk to be the first one, now every time your computer will boot, it will try to boot from the plugged-in USB disk.
• After you have installed windows just turn back the hard disk to be the first device in the boot order.
• There are certain keys which are needed to be pressed to go to bios setup when your computer is just turned on, these keys are mostly F9, F10 or escape key it might differ if you have a custom build you system it might be F2
• Try all of the above and other functions keys also, eventually you will find out the right key.
• There is a function key also in most laptops which allow selecting the boot device, instead of making USB device at top priority in BIOS setup, using this key you'll select from which device else up manually