Installing WINDOWS 7 from a USB drive
You can install Windows 7 directly from a pen drive and the process of creating this installation USB drive is also very simple. It's still not graphical and you need to run some commands but it's not that difficult either. The benefit you get with native support for USB installation is that you can easily install Windows 7 on ultra portable machines and netbooks which don't have optical drives and at the same time, the speed you get while installing from a USB drive is much faster than installing it from an optical drive.
It also notifies about devices that would require driver updation, post upgradation. To make a Windows 7 installation USB drive you will need an empty pen drive with 4GB (or higher) flash drive. Plug this drive into a Vista or Win 7 machine. Now open the command prompt with admin rights by right clicking on the cmd icon and selecting �Run as Administrator�. Type in Diskpart and hit Enter. Then type 'list disk.' This will show you the number of disks connected to your machine. See which is the one with 4GB space. Now run the following commands assuming that the disk name is disk 1, else replace disk 1 with the correct number for your disk.
Diskpart>Select disk 1
Diskpart>Clean
Diskpart>Create Partition primary
Diskpart>Select partition 1
Diskpart>Active
Diskpart>Format fs=ntfs
Diskpart>Assign
Diskpart>Exit
Now, all you need to do is copy all the content from your windows 7 DVD to this pen drive and you are all set to start the installation from the pen drive.
It also notifies about devices that would require driver updation, post upgradation. To make a Windows 7 installation USB drive you will need an empty pen drive with 4GB (or higher) flash drive. Plug this drive into a Vista or Win 7 machine. Now open the command prompt with admin rights by right clicking on the cmd icon and selecting �Run as Administrator�. Type in Diskpart and hit Enter. Then type 'list disk.' This will show you the number of disks connected to your machine. See which is the one with 4GB space. Now run the following commands assuming that the disk name is disk 1, else replace disk 1 with the correct number for your disk.
Diskpart>Select disk 1
Diskpart>Clean
Diskpart>Create Partition primary
Diskpart>Select partition 1
Diskpart>Active
Diskpart>Format fs=ntfs
Diskpart>Assign
Diskpart>Exit
Now, all you need to do is copy all the content from your windows 7 DVD to this pen drive and you are all set to start the installation from the pen drive.
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