Another method other than F11

sometimes F11 just doesn't work or response. You could try making the recovery disk partition active by attaching your HDD to another system. My machine was wiped out with XP the first time I opened the box, hence my F11 is lost forever. The method mentioned above works as the recovery partition is a full functional system.

OK, bottom line is you won't loss data anyway.

Or you can slave your HDD through SATA to another machine and try "boot partition" selection in BIOS.