How to install a secondary SATA hard drive. If both your hard drives are SATA then what you will do is use a SATA cable numbered “1” for your primary hard drive. Use SATA cable numbered “2” for your secondary drive old.
SATA cables are marked with numbers. Try to boot your computer up with your drives set this way and it should work. If that computer does not boot or boots off a wrong drive go into a BIOS and make sure a boot order is correct.
Your new 1.5 TB SATA drive should be listed first with your older drive listed second. Check out an adding a hard drive hp page that shows you how to add an additional hard drive to your HP system, so that you have both hard drives configured correctly. If all goes will this will allow you to boot off your new 1.5 TB drive and be able to access some data off your old secondary drive.
If you want to be able to switch back and forth and boot off each hard drive then that will require more diligence and is beyond a scope of this article. These instructions were written for an HP Media Center M7250N desktop PC with a new secondary 1.5 terabyte hard drive, but can certainly be used as basis points for adding a secondary SATA hard drive into other PC’s.