how can we install the operating system from a USB drive

-Ensure your PC is new enough to have a BIOS that can boot from USB -Get a USB stick with enough capacity for the operating system you intend to install (probably8Gb).
-Installing Windows XP onto USB requires tweaking and third-party software.
-Windows users can install the following Linux distros to the USB stick from within a Windows environment; -Non-Windows users may have to use a PC with a CD or DVD drive then install Linux to the USB stick.
The following Linux distros can be installed to USB from the Live CD environment; -Mac-on-Stick enables you to run Mac OS Classic7.01

Download software called bootable USB from Microsoft install it download .windows.iso file run the program and burn windows in usb and now turn on your system where you install your WINDOWS plugin you usb press f2 /f12 select usb and follow the instructions

Basm Allah Alrahman Alrahim

 

this software make what you want ( for you and for you only ! )

first of all your computer should be able to boot from USB. old computer does not support USB boot.

you need to have operating system in ISO file. you can download the ISO file from the internet or if you have original OS CD you can create ISO file by using third party software like "MAGIC ISO". once you have ISO file you can use "IsoToUsb" a small software utility to create the OS bootable USB.

once the usb is ready. plug the usb in the computer where you want to install the OS. go to bios  and change the boot order to USB as a first device to boot. restart the computer. the installation will start from the USB. installation process will be same as from the CD / DVD.

i have done this many times for windows7 and windows8 installations.

u must have the files copied from CD onto the USB Flash.connect Flash into port. switch ON laptop. either:1. go into Setup (normally F2). change Boot option to USB, Save and Restart. OR...2. with Flash hooked into USB port, go into Boot Menu (usually F12). select USB and hit Enter. if the files on USB are copied properly, the port should recognize installation files (Auto Booting) starts.this process is followed1st time. once the temp files are copied, the HDD will continue installing but do NOT remove the Flash until all installation is completed.

u need program its name ultra iso and you need the opreating system you need image to burn it on usb drive

we can create usb drive as a boot up disk so we can zip windows files in usb and install windows with usb drive

we need to make our pendrive bootable using command prompt after that we need an image to burn or some thing else