How do the computer installation dual system display in the boot menu?

My computer has two hard disks, one with XP, one with WIN 7, the first installed XP, and then the installed WIN7, which are installed in different disks. Now only the hard disk can be set to boot. The system, by what means can be displayed from the boot menu. In addition, the computer purchase time is not long, I know nothing about the computer, the computer configuration is dual-core alone, just bought a hard disk, and later bought a hard disk, so installed a dual system, but it is not clear how to install the dual system Menu display? User analysis answer:

1. First set the two hard drives as master and slave, then use the repair software to fix the boot table.

2. The BIOS can be set to boot from which hard disk, some motherboards have this function, such as ASUS motherboard, press F8 after booting, and then jump out of which hard drive after the self-test is completed. Start up, you can choose to enter WIN7, or XP hard disk at this time,

This method is suitable for two hard disk brands, or different capacities, so it is easy to distinguish if you know which interface to connect Which system of the disk, you can choose.

3. I don't know if the BIOS setup boot disk does not work. If you want XP to boot, set the hard disk as the first boot disk in the BIOS. If you want to start WIN, the same is true.