How to install Windows from a USB drive
Windows 7 (and other OS’s can be installed in this manner); I’m sure you’ve seen one of the many posts on this before – this isn’t new, but I’m logging it here as I still get asked how to do this on a regular basis.
- Take a USB device and make a 32GB partition (use a smaller value if you like).
- From the command line run
list disk[to show the disks and find the newly created 32GB, remember the <number> ]
select disk <number>
create partition primary
select partition <number>
- Copy the files from a Windows installation DVD or from a ISO to the new partition with
xcopy or drag and drop them
- Then I’ve often needed to use the
bootsect.exeutility from the \boot folder on the installation DVD as well to make the drive bootable. Type:
bootsect /nt60 <harddrive>:
Now just plug it in and boot your machine (you may have to change the BIOS so that the USB device is 1st in the boot order or press a key to load up the boot device selection screen – varies per model)