Installing Windows 7 from USB

Are you a person recently purchased a netbook which is not having a DVD ROM, No problem, you can install any OS using a pendrive or USB’s.

Here is the steps.

Requirements

1. A 4GB pen drive (since the size of Windows 7 is 2.34GB)

2. Windows 7 installation files or a iso image of Windows 7 OS

3. Administrative privileges in the OS

Step 1 : Take the backup of all the data in your usb drive plug into the Machine.

Step 2: Go to device manager (Control panel –> device manager –> select disk –> select your usb drive ) and then right click –> properties –> go to policies –> Select Better performance). This step is needed for faster installation of windows 7 (You can wonder, windows 7 installed within 15 minutes with just 1GB RAM) See the following picture

Step 3: open the command prompt with administrative rights (Accessories –> right click Command prompt – and select run as administrator)

Step 4: type DISKPART (you will get a prompt as DISKPART)

Step 5: type LIST DISK (it will list all the disks), please remember the disk number of your pen drive (see the following picture)

So, mine is disk 1

Step 6: Execute the following commands one by one,

SELECT DISK 1

CLEAN

CREATE PARTITION PRIMARY

SELECT PARTITION 1

ACTIVE

FORMAT FS=NTFS (since windows 7 permits only NTFS, the USBs also to be formatted as NTFS, and this process will take some time)

ASSIGN

EXIT

Step 7: Now insert the windows 7 DVD drive or if you have iso image, using winrar extract it to a folder

Step 8: go to the concerned folder in the command prompt (assume installation files of windows 7 as E:/win07)

execute the command in command prompt

CD win07/BOOT

BOOTSECT.EXE /NT60 G: (assigning the bootmanager to the USB. G is the drive letter for my USB)

Step 9: After getting the successful message, copy the contents of your Windows 7 installation files to your USB Drive. Thats it.

Enable Booting from USB option in your BIOS and lets see the installation will complete within 15 minutes.!!!!

Thanks to http://www.intowindows.com/how-to-install-windows-7vista-from-usb-drive-detailed-100-working-guide/

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