running 2 hdd's and getting errors

ok heres the thing i just got this old hdd from a surplus store for $5 its only 2gigs but i would like to use it to store things but when i hook it up to my pc i get a error saying insurt a boot disk? and other times it says that that hdd has failed? whats going on and its not bad because that happens with every hdd i try to add too it whats going on?

BTW: what i would like to do is use that hdd (the 2gig one) as my windows disk and use my 40gig for files that way if i ever get a virus it will stay out of windows and i wont have to format or anything like that because its bad to have to reinstall windows let alone trying to update once again on dialup

 

jumpers are set right IDE cable is just fine Bios says it is bad so i put in yet another drive and it worked just fine but when i restarted it gave me the same error "insort a system disk" why would it be doing this?