I have two old hard drives one with XP prof and the other with XP standard both hard drives have programs installed that I still use but do not have disks for anymore, want to put both drives into the newer PC which already has the XP standard hard drive installed, is it as easy as adding a second hard drive?
More about :dual boot prof standard individual hard drives
If your bios has a boot menu like the F12 on gigabyte boards, that will be the esiest way. just hit F12 or whatever key yours may have during startup and select the drive to boot from. Here is an example of what I'm talking about. Look at the menu at the bottom of the screen. You will see F12: Boot menu.