So far we've seen tutorials for installing Windows 7 in quite a few different ways. All of them require boot media like a DVD or USB key. All of them use the Windows 7 installer. All of them require you to upgrade or replace your existing Windows 7 installation. All of them are relatively slow. All of them are using technology designed by Microsoft for clueless end-users. This method uses technology designed for advanced users; OEMs like Dell, big IT departments and experts like us. It doesn't require extra bootable media and it leaves your existing Windows install intact. It's fast, it's flexible and it's all command line suitable for scripting. Let's start with the assumption that you've got a single hard disk with one big partition, it's not full, and you're already running some build of Windows 7 or Vista. If you've got more than one partition and can't figure out how to modify the steps in this tutorial to accommodate that please post a comment and I'll add the steps. The same goes for other hard disks. The only hard requirement is that you be running Windows 7 or Vista. We need to make room for the new Windows 7 install so we start by running DISKPART. Open Start, type diskpart and press Enter. Microsoft DiskPart version 6.1.7100 Copyright (C) 1999-2008 Microsoft Corporation. On computer:Ashraf DISKPART> lis vol Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 F DVD-ROM 0 B No Media Volume 1 E DVD-ROM 0 B No Media Volume 2 C 7 NTFS Partition 16 GB Healthy System Volume 3 D Data NTFS Partition 263 GB Healthy Volume 4 G Removable 0 B No Media DISKPART> sel vol 3 Volume 3 is the selected volume. DISKPART> shr minimum=10240 desired=16384 DiskPart successfully shrunk the volume by: 16 GB DISKPART> cre par pri DiskPart succeeded in creating the specified partition. DISKPART> for fs=ntfs quick label="7new" 100 percent completed DiskPart successfully formatted the volume. DISKPART> ass DiskPart successfully assigned the drive letter or mount point. DISKPART> act DiskPart marked the current partition as active. DISKPART> lis vol Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 F DVD-ROM 0 B No Media Volume 1 E DVD-ROM 0 B No Media Volume 2 C 7 NTFS Partition 16 GB Healthy System Volume 3 D Data NTFS Partition 247 GB Healthy Volume 4 G Removable 0 B No Media * Volume 5 H 7new NTFS Partition 15 GB Healthy DISKPART> exi • Select the volume to shrink from the list with "sel vol" • Specify the minimum and desired volume size in megabytes with "shr" • Specify your own label for the new volume with "for" • Make note of the drive letter of the starred volume after "ass" Now crack open a Windows 7 ISO and extract the file \sources\install.wim. I just mount the file directly with CloneDrive: elby Free Software but your favorite ISO or archive program should be able to do this as well. Download imagex.zip, extract and open an elevated command prompt there. D:\Mike\Desktop\work>imagex /apply e:\sources\install.wim 5 h:\ ImageX Tool for Windows Copyright (C) Microsoft Corp. All rights reserved. [ 100% ] Applying progress Successfully applied image. Total elapsed time: 7 min 8 sec D:\Mike\Desktop\work>h:\windows\system32\bcdboot h:\windows Boot files successfully created. Now reboot and a few minutes (less than 5 on my box) later you'll be prompted for locale info and to create a user. Welcome to your new Windows 7 installation. To toggle back and forth between this new installation and the original one use diskpart. Code: Microsoft DiskPart version 6.1.7100 Copyright (C) 1999-2008 Microsoft Corporation. On computer: Ashraf DISKPART> lis vol Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 F DVD-ROM 0 B No Media Volume 1 E GRC1CULFRER UDF DVD-ROM 2413 MB Healthy Volume 2 C 7 NTFS Partition 16 GB Healthy System Volume 3 D Data NTFS Partition 247 GB Healthy Volume 4 H NTFS Partition 15 GB Healthy Volume 5 G Removable 0 B No Media DISKPART> sel vol 2 Volume 2 is the selected volume. DISKPART> act DiskPart marked the current partition as active. DISKPART> exi • Select the volume containing the Windows installation you want to start from the list with "sel vol"