My Tech Notes: Create a bootable Window 7 installer usb disk on Debian 7

You need to the Windows 7 ISO image file ready. e.g. Win7.ISO
You need to install p7zip-full to extract the ISO image.
```
sudo apt-get install p7zip-full
```
You need to install ms-sys
Plugin your USB disk and check its device name.
```
sudo blkid
```
Make a NTFS partition on the USB drive by using cfdisk, or gparted and apply boot flag to it.
Format the USB partition,
```
sudo mkfs.ntfs -n WIN7 /dev/sdX1
```
Mount the partition by pulling off and re-plug in the USB drive or run
```
mount /dev/sdX1 /media/USB
```
Extract the ISO image to the mounted partition:
```
cd /media/USB; 7z x /path/to/Win7.iso
```
Run ms-sys to install the Window 7 boot sector:
```
ms-sys -7 /dev/sdX
```
Note: you need to install the boot sector to the USB drive's MBR, so you should use /dev/sdX NOT /dev/sdX1

My Tech Notes