Beginning in mid-2005, a hidden partition on the hard drive, accessible at boot via the BIOS or within Windows via a utility was used instead of recovery media for many Vaio laptops. Pressing at the Vaio logo during boot-up will cause the notebook to boot from the recovery partition; where the user has the choice of either running hardware diagnostics without affecting the installed system, or restoring (re-imaging) the hard drive to factory condition – an option that destroys all user installed applications and data). When first running a Vaio system out of the box, users are prompted to create a set of recovery DVDs, which will be required in case of hard disk failure and replacement with a new drive. In cases where the system comes with Windows 7 64 bit pre-installed, the provided recovery media restores the system to Windows 7 32 or 64 bit. Therefore, the user must create their own recovery disks.