You can use the Acer eRecovery to do this now.
As to backup. I use CLONEZILLA but make NO MISTAKE. I back the entire 160GB image.
I have an old Acer Aspire 5517 laptop that has a Windows 7 Home x64 restore partition that you can use from F10 at BIOS startup to reinstall W7. I want to use DBAN or another low level tool to wipe the 160GB drive in it, and later rewrite that partition reserving the license etc..
How can I do this? I basically want to reinstall W7 after the wipe using that OEM license and don't have disks. Thanks