Acho que o que você está querendo fazer é clonar sua unidade em um drive USB. Aqui estão alguns softwares que eu acho que podem ser úteis para você:
- Macrium Reflect Free: (Open Source Software)
This software is able to image your currently running system (using a facility known as Microsoft Volume Shadow copy Service) to another local hard disk, to the Network, a USB or Firewire drive, and DVD. It has a built-in scheduler, so that you can schedule it to back up your system at a convenient time by itself, has 32 bit and 64 bit versions, comes with a Linux-based bootable rescue CD as well as a BartPE plugin, etc. (The commercial full version includes the ability to automatically verify images made, password protection of your images, a Windows PE 2.0 rescue CD with RAID support, etc.)
2, Norton Ghost 15 (Paid Software)
Creates full system and file backups — Safeguards your system, settings, applications, and files with flexible, comprehensive backup protection.
Restores from system failures — Recovers your system and data even when you can’t restart your computer.
Enables convenient, secure offsite backups — Saves recovery points to an FTP site for easier offsite management and even backs up your data to network-attached storage devices.
Backs up on schedules and events — Lets you decide what is backed up and when so you can customize backups based on how you use your computer.