Install windows7 from usb with grub4dos

[color=Red][b]Prerequisite: bootable USB HDD/FLASH drive with grub4dos [/b]
[b]with following structure[/b]

[color=Blue]F:\[/color]
[color=Blue]imdisk     //download and uncompress imdisk.rar  [attach]11[/attach] this is to virtual CD drive for windows7.iso[/color]
[color=Blue]iso[/color]
[color=Blue]menu.lst[/color]
[color=Blue]grldr[/color]
[color=Blue]default[/color]


Step 1. [u]Create grub4dos mbr on external HDD/flash drive.[/u][color=Blue] Refer to[/color] [/color][url=http://ikel.ca/forum/viewthread.php?tid=16&extra=page%3D1]here[/url][color=Red]
Step 2. [u]edit menu.lst and add a new entry[/u][/color]

title Install Win7\n
find --set-root --ignore-floppies /iso/winpe.iso
map (hd0) (hd1)          [color=Blue] //switch hd0 with hd1, hd0 is the external hdd that computer boot from, but windows 7 does not allow installing on external hdd[/color]
map (hd1) (hd0)
map  /iso/winpe.iso (hd32)
map --hook
chainloader (hd32)

[color=Red]Step 3.[u]Download and  Install windows windows 7 AIK  from[/u][/color][url=http://www.microsoft.com/downloads/details.aspx?FamilyID=696dd665-9f76-4177-a811-39c26d3b3b34&displaylang=en]here[/url]
           after installation, open dos promote from programs list. enter command [color=Blue]
           a. [/color][color=Blue]copype.cmd <architecture> <destination>[/color]
                  e.g. copype.cmd x86 c:\winpe_x86
[color=Blue]                       this will create following folder structure[/color]

[color=Blue]                     c:\winpe_x86[/color]
[color=Blue]                     c:\winpe_x86\ISO[/color]
[color=Blue]                     c:\winpe_x86\moun[/color]t


[color=Blue]            b. copy c:\winpe_x86\winpe.wim c:\winpe_x86\ISO\sources\boot.wim[/color]
                // winpe.wim is brand new image from AIK

[color=Blue]            c. Dism /Mount-Wim /WimFile:C:\x86\ISO\sources\boot.wim /index:1 /MountDir:C:\x86\mount[/color]
[attach]9[/attach]
[attach]10[/attach]
[color=Red][u]Step 3. replace[/u] [size=5][b][color=Sienna]startnet.cmd[/color][/b][/size][/color] [attach]12[/attach] to [color=Blue][b][i]c:\x86\mount\windows\system32[/i][/b][/color]

[color=Red][u]Step 4. save and close startnet.cmd, then enter[/u][/color] [color=Blue][b][i]dism /Unmount-Wim /MountDir:C:\x86\mount\ /Commit[/i][/b][/color]
( this will save changes made to [color=Blue][b]c:\x86\ISO\sources\[/b][/color][color=Blue]boot.wim.[/color])

[color=Red][u]Step 5. type in cmd windows[/u][/color]
[color=Blue][b][i] oscdimg -n -bC:\x86\etfsboot.com C:\x86\ISO C:\x86\winpe_x86.iso[/i][/b][/color]    (this will make a new bootable windows 7 PE CD image with boot.wim modified above)
[color=Red][u]Step 6. move winpe_x86.iso to external HDD, assuming[/u][/color] [color=Blue]F:\iso\winpe_x86.iso[/color]
[color=Red][u]Step 7.[/u][/color][color=Red][u]move windows7 DVD image to[/u][/color]
[color=Blue]F:\iso\win7.iso[/color]
[color=Red][u]Step 8. Boot with USB external HDD and select Install Win7[/u],[/color] setup screen should come up after boot

[img]file:///C:/Users/Kelvin/AppData/Local/Temp/moz-screenshot.png[/img][img]file:///C:/Users/Kelvin/AppData/Local/Temp/moz-screenshot-1.png[/img]