Sorry, rephrase question:
Would like to know best way to make it so, If my one hard drive goes bad for any reason, via virus or hardware issue. If it is possible to have another HD, (which is basically a clone of the first one) to be next to use? So if HD1 goes down, I can simply boot into HD2 (which is a copy of HD1)
In which case, I can simply clean out or replace HD1 and now make it the clone.
In the simplest way:
How can I build/purchase a PC so if anything happens to my harddrive I can simply switch to the other harddrive that is backed up to the night before?
I want to have 2 bootable hard drives. One as primary, One as secondary. The secondary being a clone of the first one. But if at any time HD1 goes bad/down. HD2 will be ready to go.
So instead of doing a "system restore" I could merely switch hard drives. Then troubleshoot what went wrong with the first one when I have free time.