This article based on my personal experience, and for me this is the easiest way to install Windows 7 from USB Flash drive. Not only Windows 7, it is also can be use for Windows Vista or even Windows 8 but it is more tricky with Windows XP. Let start!
How to Install Windows 7 From USB Flash Drive?
- USB Flash Drive (4 GB or larger)
- Windows 7 ISO image or DVD - You can get Windows 7 Ultimate from this link or Microsoft Store or download ISO file, or buy new Windows 7 DVD from your local Microsoft Store
- GRUB4DOS - Can be download from here and also Grub4Dos GUI Installer
- Text editor - You can use Notepad, but I recommend you to use Notepad++
Preparing USB Flash Drive to be bootableBootable USB Flash Drive is a must to be able to Install Windows 7 from USB Flash Drive. Here step by step to make your USB Flash Drive bootable:
1. Plug in and format your USB Flash Drive and use Fat32 or Fat as file system.
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3. Start grubinst_gui.exe (extracted from Grub4Dos GUI Installer, run it as Administrator) and follow this image below to install GRUB4DOS booting code to your Flash Drive MBR (Master Boot Record).
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4. Copy grldr (not grldr.mbr) and menu.lst (extracted from GRUB4DOS) to the root of your Flash Drive, and now you have the bootable USB Flash Drive. To make sure, you can try to boot your computer from USB Flash Drive and you will see GRUB4DOS with default options.
Make your previous bootable USB Flash Drive to be Windows 7 InstallerAll you have to do is copying all the content from your Windows 7 DVD or ISO image to your previous bootable USB Flash Drive and edit the menu.lst file.
If you are using ISO image, you can mount the ISO image to a virtual drive using DaemonTools or other tools and then copy all the content to your USB Flash Drive. So the content of your USB Flash Drive should be like this:
|Click to enlarge image!|
title Windows 7 Setup
Now, you are done and you can start to Install Windows 7 From USB Flash Drive by selecting Windows 7 Setup from GRUB4DOS menu.
Note: Do not unplug your USB Flash Drive before Windows 7 is installed properly on your computer. I recommend you to manually your computer from the Start Menu after you can see the desktop. After that, you are safe to unplug the USB Flash Drive.