On the computer used for setup:
- Download and unzip WinUSB Maker.
- Run WinUSB Maker.      - If you have an install DVD put it in the drive, select Setup Folder Bootable Disk, click Browse Setup Folder and select the DVD drive.           
 or
- If you have an ISO, select ISO Image Bootable Disk, click Browse ISO Image and select your ISO.
 
- If you have an install DVD put it in the drive, select Setup Folder Bootable Disk, click Browse Setup Folder and select the DVD drive.           
- Click Make it Bootable and wait for the process to finish.        
- Download this cfg.ini file and put it on the root of the flash drive.       
 The contents are simply:
 [WinPE]
 ConfigDisk=1
 CheckReqs=0
 WindowsPartitionSize=MAX
 Processed=true
- Ensure that only your desired boot drive is plugged in. All other hard drives should be disconnected.
- Set your server’s BIOS to boot from USB, plug in the freshly created flash drive, and boot up!
- Pay attention. When the first reboot happens yank the flash drive.
Have fun working with your smaller than 160GB drive!