this is an awful idea.
if one drive goes back you are screwed.
if the first one goes bad, all your apps on the second one partitions won't work ever again.
if the second drive goes bad, you got no programs.
best way to setup is this:
put your OS and program files on one drive, and put everything else on the second drive.
now get an external drive and Acronis True Image
and clone/copy your os drive to another drive.
now if your OS drive goes bad, its OK you got a copy of it ready to go in seconds and you lose nothing
right now you don't have a backup of nothing, and instead of being vulnerable to one HDD corruption you have made yourself vulnerable to 2 HDD corruptions, in other words you have put yourself in twice the vulnerability.