Yes you can, you will need a SATA drive and a SATA cable check your PSU if it has extra SATA power connection. Here it is explained how to take out the HDD cage and you can place another drive in there next to the other one. http://h10032.www1.hp.com/ctg/Manual/c01859463.pdf
Thanks but I need to clone the current WDC internal drive which is failing. Can I add the new WDC drive to another bay currently occupied by DVD player and use the WDC program to clone it? Or preferably, could I clone to an external drive and then somehow transfer to the newly installed internal drive?
Regards, Ross Macdonald