How to install the windows os from pen drive(USB Drive).

Steps to install the Windows OS from pendrive.

Step 1
         Goto start menu and type run "cmd" in search of start menu without codes.Then right click  and click run as administrator.

Step 2
         Once command prompt is opened mean then type "DISKPART" in command prompt.Then you can see the command prompt as displayed like bellow.

Step 3 
          Once diskpart is enable mean you ready to change the pendrive as boot able drive.
Now you need to check what are the devices are connect with the system. using "List Disk" command.

Step 4
         Once all devices are listed you can select the disk which disk you want to use as a boot able disk. Following comment is use to select the disk ,Then only the you can clean the disk.

         "Select Disk 1"

Step 5
         Once disk is selected you need to clean the disk,If you keep any file in the disk it will be deleted.Command to clean is bellow.

         "CLEAN"

 Step 6
          Once the clean is completed,Then you need to create a partition as primary, For you can run the following in command

         "CREATE PARTITION PRIMARY"

Step 7
         Once the partition success.You need to select the partition.Command is bellow.
        
          "SELECT PARTITION 1"

Step 8 
          Once the partition is selected . You need to active the drive.Command bellow.

          "ACTIVE"

Step 9 
          Once the drive is Active.Then you need to format the drive in ntfs format. That is the correct for to make the pendrive as book able disk.Command to format the disk to NTFS.

          "FORMAT FS=NTFS QUICK"

Step 10
         The format is completed mean. Then you need to assign.Command bellow

         "ASSIGN"

Step 11
          Then exit the command prompt.Command bellow.
         "EXIT"

Once all the above steps are completed then you need to insert the Windows OS DVD into you system. Then Enter in to the DVD drive.(If you have the Windows OS in ISO file mean you can use the PowersISO software ).

For Example:-

The DVD drive is "d" drive mean.

Just goto command prompt change the drive.

type

C:\> D:

 then

D:\> cd boot

then it looks like bellow 

D:\boot>

Use the bootsect.exe to make the pendrive as bootable and it to used for windows 7/vista only.
Then you need to type 

"BOOTSECT.EXE/NT60 F:"

 Here "F" is my pendrive so i use "F:" in end of the above command. You can use which drive your pendrive is mounted. Then hit enter button.

Then copy all the file from windows OS DVD to Pen drive.

Then the pen drive is ready to boot the OS. 

Goto BIOS setting and change the first boot as USD drive then only it will boot from pen drive.